./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 fced0e87 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-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:02:44,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:02:44,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:02:44,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:02:44,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:02:44,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:02:44,367 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:02:44,367 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:02:44,368 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:02:44,373 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:02:44,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:02:44,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:02:44,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:02:44,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:02:44,375 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:02:44,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:02:44,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:02:44,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:02:44,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:02:44,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:02:44,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:02:44,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:02:44,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:02:44,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:02:44,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:02:44,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:02:44,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:02:44,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:02:44,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:02:44,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:02:44,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:02:44,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:02:44,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:02:44,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:02:44,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:02:44,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:02:44,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:02:44,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:02:44,381 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:02:44,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:02:44,381 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:02:44,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:02:44,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:02:44,382 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:02:44,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:02:44,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:02:44,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:02:44,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:02:44,678 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:02:44,679 INFO L431 ainManager$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 [2024-01-31 16:02:45,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:02:46,077 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:02:46,077 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 [2024-01-31 16:02:46,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3c90cc4d/8498b0fd4f354bf49fdc2d5a40a2d61f/FLAGb2e579c44 [2024-01-31 16:02:46,105 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3c90cc4d/8498b0fd4f354bf49fdc2d5a40a2d61f [2024-01-31 16:02:46,108 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:02:46,108 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:02:46,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-01-31 16:02:46,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:02:46,333 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:02:46,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:02:46,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:02:46,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:02:46,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:02:46" (1/2) ... [2024-01-31 16:02:46,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41daa9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:02:46, skipping insertion in model container [2024-01-31 16:02:46,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:02:46" (1/2) ... [2024-01-31 16:02:46,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3fe7fd3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:02:46, skipping insertion in model container [2024-01-31 16:02:46,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:02:46" (2/2) ... [2024-01-31 16:02:46,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41daa9c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:46, skipping insertion in model container [2024-01-31 16:02:46,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:02:46" (2/2) ... [2024-01-31 16:02:46,341 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:02:46,554 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:02:46,555 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 0 [2024-01-31 16:02:46,556 INFO L98 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) [2024-01-31 16:02:46,556 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-01-31 16:02:46,556 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-01-31 16:02:46,556 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-01-31 16:02:46,557 INFO L98 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) [2024-01-31 16:02:46,557 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-01-31 16:02:46,557 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (unsigned long )arg == 0UL [2024-01-31 16:02:46,557 INFO L98 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) [2024-01-31 16:02:46,557 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-01-31 16:02:46,557 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 16:02:46,558 INFO L98 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) [2024-01-31 16:02:46,558 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-01-31 16:02:46,558 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-01-31 16:02:46,558 INFO L98 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) [2024-01-31 16:02:46,558 INFO L98 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) [2024-01-31 16:02:46,558 INFO L98 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) [2024-01-31 16:02:46,558 INFO L98 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) [2024-01-31 16:02:46,559 INFO L98 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) [2024-01-31 16:02:46,559 INFO L98 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) [2024-01-31 16:02:46,559 INFO L98 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) [2024-01-31 16:02:46,559 INFO L98 nessWitnessExtractor]: Location invariant before [L744-L744] (unsigned long )arg == 0UL [2024-01-31 16:02:46,559 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-01-31 16:02:46,560 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-01-31 16:02:46,560 INFO L98 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) [2024-01-31 16:02:46,560 INFO L98 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) [2024-01-31 16:02:46,560 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:02:46,560 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:02:46,560 INFO L98 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) [2024-01-31 16:02:46,560 INFO L98 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) [2024-01-31 16:02:46,561 INFO L98 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) [2024-01-31 16:02:46,561 INFO L98 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) [2024-01-31 16:02:46,561 INFO L98 nessWitnessExtractor]: Location invariant before [L747-L747] (unsigned long )arg == 0UL [2024-01-31 16:02:46,561 INFO L98 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) [2024-01-31 16:02:46,561 INFO L98 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) [2024-01-31 16:02:46,562 INFO L98 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) [2024-01-31 16:02:46,606 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:02:46,778 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] [2024-01-31 16:02:46,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:02:46,963 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-01-31 16:02:46,997 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] Start Parsing Local Start Parsing Local [2024-01-31 16:02:46,999 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:02:47,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:02:47,149 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:02:47,150 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47 WrapperNode [2024-01-31 16:02:47,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:02:47,152 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:02:47,152 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:02:47,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:02:47,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,214 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-01-31 16:02:47,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:02:47,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:02:47,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:02:47,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:02:47,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,256 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 16:02:47,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,269 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:02:47,291 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:02:47,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:02:47,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:02:47,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (1/1) ... [2024-01-31 16:02:47,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:02:47,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:02:47,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:02:47,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:02:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:02:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:02:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:02:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:02:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:02:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:02:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:02:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:02:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:02:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:02:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:02:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:02:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:02:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:02:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:02:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:02:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:02:47,376 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:02:47,492 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:02:47,493 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:02:47,881 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:02:47,881 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:02:48,052 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:02:48,054 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:02:48,054 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:02:48 BoogieIcfgContainer [2024-01-31 16:02:48,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:02:48,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:02:48,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:02:48,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:02:48,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:02:46" (1/4) ... [2024-01-31 16:02:48,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fb3ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:02:48, skipping insertion in model container [2024-01-31 16:02:48,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:02:46" (2/4) ... [2024-01-31 16:02:48,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fb3ada and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:02:48, skipping insertion in model container [2024-01-31 16:02:48,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:02:47" (3/4) ... [2024-01-31 16:02:48,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fb3ada and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:02:48, skipping insertion in model container [2024-01-31 16:02:48,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:02:48" (4/4) ... [2024-01-31 16:02:48,063 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-01-31 16:02:48,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:02:48,078 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-01-31 16:02:48,079 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:02:48,176 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:02:48,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 73 transitions, 154 flow [2024-01-31 16:02:48,262 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2024-01-31 16:02:48,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:02:48,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 242 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-01-31 16:02:48,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 73 transitions, 154 flow [2024-01-31 16:02:48,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 71 transitions, 148 flow [2024-01-31 16:02:48,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:02:48,291 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;@6c0f9d91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:02:48,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-01-31 16:02:48,293 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:02:48,294 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:02:48,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:02:48,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:48,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:02:48,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:48,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash 10181, now seen corresponding path program 1 times [2024-01-31 16:02:48,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:48,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650782153] [2024-01-31 16:02:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:48,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:48,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:48,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650782153] [2024-01-31 16:02:48,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650782153] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:48,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:48,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:02:48,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563415823] [2024-01-31 16:02:48,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:48,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:02:48,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:48,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:02:48,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:02:48,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-01-31 16:02:48,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:48,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:48,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-01-31 16:02:48,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:49,316 INFO L124 PetriNetUnfolderBase]: 1643/3614 cut-off events. [2024-01-31 16:02:49,317 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:02:49,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6277 conditions, 3614 events. 1643/3614 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 30357 event pairs, 1001 based on Foata normal form. 100/2309 useless extension candidates. Maximal degree in co-relation 6265. Up to 2517 conditions per place. [2024-01-31 16:02:49,345 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 42 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-01-31 16:02:49,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 245 flow [2024-01-31 16:02:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:02:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:02:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-01-31 16:02:49,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6940639269406392 [2024-01-31 16:02:49,356 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 148 flow. Second operand 3 states and 152 transitions. [2024-01-31 16:02:49,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 245 flow [2024-01-31 16:02:49,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:02:49,362 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 147 flow [2024-01-31 16:02:49,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-01-31 16:02:49,366 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-01-31 16:02:49,367 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 147 flow [2024-01-31 16:02:49,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:49,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:49,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:02:49,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:02:49,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:49,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:49,368 INFO L85 PathProgramCache]: Analyzing trace with hash 303701841, now seen corresponding path program 1 times [2024-01-31 16:02:49,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:49,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050225776] [2024-01-31 16:02:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:49,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:49,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:49,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050225776] [2024-01-31 16:02:49,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050225776] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:49,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:49,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:02:49,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900193677] [2024-01-31 16:02:49,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:49,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:02:49,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:02:49,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:02:49,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-01-31 16:02:49,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:49,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:49,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-01-31 16:02:49,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:50,196 INFO L124 PetriNetUnfolderBase]: 1780/3778 cut-off events. [2024-01-31 16:02:50,197 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-01-31 16:02:50,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7031 conditions, 3778 events. 1780/3778 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 31252 event pairs, 980 based on Foata normal form. 384/3027 useless extension candidates. Maximal degree in co-relation 7018. Up to 2714 conditions per place. [2024-01-31 16:02:50,234 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 55 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-01-31 16:02:50,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 302 flow [2024-01-31 16:02:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-01-31 16:02:50,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-01-31 16:02:50,242 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 147 flow. Second operand 4 states and 160 transitions. [2024-01-31 16:02:50,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 302 flow [2024-01-31 16:02:50,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:02:50,246 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 138 flow [2024-01-31 16:02:50,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-01-31 16:02:50,248 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -11 predicate places. [2024-01-31 16:02:50,248 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 138 flow [2024-01-31 16:02:50,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:50,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:50,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:02:50,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:02:50,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:50,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:50,251 INFO L85 PathProgramCache]: Analyzing trace with hash 824822840, now seen corresponding path program 1 times [2024-01-31 16:02:50,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:50,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701676873] [2024-01-31 16:02:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:50,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:50,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:50,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701676873] [2024-01-31 16:02:50,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701676873] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:50,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:50,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:02:50,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283160791] [2024-01-31 16:02:50,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:50,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:02:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:50,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:02:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:02:50,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-01-31 16:02:50,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:50,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:50,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-01-31 16:02:50,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:51,206 INFO L124 PetriNetUnfolderBase]: 2412/5103 cut-off events. [2024-01-31 16:02:51,206 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2024-01-31 16:02:51,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9486 conditions, 5103 events. 2412/5103 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 42191 event pairs, 1501 based on Foata normal form. 14/3649 useless extension candidates. Maximal degree in co-relation 9472. Up to 3689 conditions per place. [2024-01-31 16:02:51,232 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 54 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-01-31 16:02:51,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 302 flow [2024-01-31 16:02:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-01-31 16:02:51,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828767123287671 [2024-01-31 16:02:51,234 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 138 flow. Second operand 4 states and 141 transitions. [2024-01-31 16:02:51,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 302 flow [2024-01-31 16:02:51,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:02:51,236 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 163 flow [2024-01-31 16:02:51,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-01-31 16:02:51,237 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-01-31 16:02:51,237 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 163 flow [2024-01-31 16:02:51,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:51,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:51,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:51,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:02:51,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:51,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash -201206786, now seen corresponding path program 1 times [2024-01-31 16:02:51,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:51,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21251285] [2024-01-31 16:02:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:51,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:51,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21251285] [2024-01-31 16:02:51,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21251285] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:51,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:51,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:02:51,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322891998] [2024-01-31 16:02:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:51,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:02:51,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:51,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:02:51,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:02:51,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-01-31 16:02:51,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:51,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:51,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-01-31 16:02:51,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:51,726 INFO L124 PetriNetUnfolderBase]: 1779/3476 cut-off events. [2024-01-31 16:02:51,727 INFO L125 PetriNetUnfolderBase]: For 492/506 co-relation queries the response was YES. [2024-01-31 16:02:51,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6922 conditions, 3476 events. 1779/3476 cut-off events. For 492/506 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 27113 event pairs, 387 based on Foata normal form. 400/3000 useless extension candidates. Maximal degree in co-relation 6906. Up to 2722 conditions per place. [2024-01-31 16:02:51,750 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 59 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-01-31 16:02:51,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 337 flow [2024-01-31 16:02:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-01-31 16:02:51,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582191780821918 [2024-01-31 16:02:51,752 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 163 flow. Second operand 4 states and 163 transitions. [2024-01-31 16:02:51,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 337 flow [2024-01-31 16:02:51,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:02:51,754 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 149 flow [2024-01-31 16:02:51,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-01-31 16:02:51,755 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -12 predicate places. [2024-01-31 16:02:51,755 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 149 flow [2024-01-31 16:02:51,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:51,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:51,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:51,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:02:51,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:51,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1942442687, now seen corresponding path program 1 times [2024-01-31 16:02:51,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:51,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691113643] [2024-01-31 16:02:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:51,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:51,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:51,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691113643] [2024-01-31 16:02:51,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691113643] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:51,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:51,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:02:51,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574939746] [2024-01-31 16:02:51,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:51,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:02:51,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:51,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:02:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:02:51,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-01-31 16:02:51,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:51,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:51,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-01-31 16:02:51,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:52,438 INFO L124 PetriNetUnfolderBase]: 2427/5052 cut-off events. [2024-01-31 16:02:52,438 INFO L125 PetriNetUnfolderBase]: For 630/644 co-relation queries the response was YES. [2024-01-31 16:02:52,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9707 conditions, 5052 events. 2427/5052 cut-off events. For 630/644 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 40300 event pairs, 1713 based on Foata normal form. 20/3777 useless extension candidates. Maximal degree in co-relation 9692. Up to 3835 conditions per place. [2024-01-31 16:02:52,476 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 48 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2024-01-31 16:02:52,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 292 flow [2024-01-31 16:02:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-01-31 16:02:52,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2024-01-31 16:02:52,479 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 149 flow. Second operand 4 states and 135 transitions. [2024-01-31 16:02:52,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 292 flow [2024-01-31 16:02:52,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:02:52,481 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 178 flow [2024-01-31 16:02:52,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-01-31 16:02:52,482 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -9 predicate places. [2024-01-31 16:02:52,482 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 178 flow [2024-01-31 16:02:52,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:52,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:52,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:52,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:02:52,484 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:52,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1288565090, now seen corresponding path program 1 times [2024-01-31 16:02:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:52,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361367160] [2024-01-31 16:02:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:52,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:52,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:52,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361367160] [2024-01-31 16:02:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361367160] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:52,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:52,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:02:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444726491] [2024-01-31 16:02:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:52,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:02:52,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:52,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:02:52,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:02:52,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:02:52,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:52,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:52,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:02:52,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:53,182 INFO L124 PetriNetUnfolderBase]: 2169/4244 cut-off events. [2024-01-31 16:02:53,182 INFO L125 PetriNetUnfolderBase]: For 747/755 co-relation queries the response was YES. [2024-01-31 16:02:53,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8667 conditions, 4244 events. 2169/4244 cut-off events. For 747/755 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32246 event pairs, 1464 based on Foata normal form. 32/3242 useless extension candidates. Maximal degree in co-relation 8649. Up to 3361 conditions per place. [2024-01-31 16:02:53,201 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 63 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-01-31 16:02:53,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 405 flow [2024-01-31 16:02:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:02:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:02:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-01-31 16:02:53,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-01-31 16:02:53,203 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 178 flow. Second operand 6 states and 198 transitions. [2024-01-31 16:02:53,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 405 flow [2024-01-31 16:02:53,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:02:53,205 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 250 flow [2024-01-31 16:02:53,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-01-31 16:02:53,206 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -1 predicate places. [2024-01-31 16:02:53,206 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 250 flow [2024-01-31 16:02:53,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:53,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:53,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:53,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:02:53,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:53,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash 907502443, now seen corresponding path program 1 times [2024-01-31 16:02:53,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:53,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561646696] [2024-01-31 16:02:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:53,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:53,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:53,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561646696] [2024-01-31 16:02:53,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561646696] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:53,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:53,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:02:53,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832700226] [2024-01-31 16:02:53,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:53,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:02:53,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:53,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:02:53,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:02:53,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:02:53,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:53,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:53,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:02:53,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:53,751 INFO L124 PetriNetUnfolderBase]: 1344/2885 cut-off events. [2024-01-31 16:02:53,751 INFO L125 PetriNetUnfolderBase]: For 1085/1093 co-relation queries the response was YES. [2024-01-31 16:02:53,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6221 conditions, 2885 events. 1344/2885 cut-off events. For 1085/1093 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22280 event pairs, 990 based on Foata normal form. 32/2266 useless extension candidates. Maximal degree in co-relation 6198. Up to 2127 conditions per place. [2024-01-31 16:02:53,765 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 51 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2024-01-31 16:02:53,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 407 flow [2024-01-31 16:02:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-01-31 16:02:53,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958904109589042 [2024-01-31 16:02:53,767 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 250 flow. Second operand 4 states and 174 transitions. [2024-01-31 16:02:53,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 407 flow [2024-01-31 16:02:53,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 407 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:02:53,770 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 300 flow [2024-01-31 16:02:53,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-01-31 16:02:53,771 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-01-31 16:02:53,771 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 300 flow [2024-01-31 16:02:53,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:53,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:53,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:53,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:02:53,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:53,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash 980523175, now seen corresponding path program 1 times [2024-01-31 16:02:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:53,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545381986] [2024-01-31 16:02:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:53,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:54,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:54,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545381986] [2024-01-31 16:02:54,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545381986] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:54,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:54,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:02:54,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420648314] [2024-01-31 16:02:54,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:54,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:02:54,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:54,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:02:54,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:02:54,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:02:54,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:54,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:54,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:02:54,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:54,538 INFO L124 PetriNetUnfolderBase]: 1870/3830 cut-off events. [2024-01-31 16:02:54,538 INFO L125 PetriNetUnfolderBase]: For 1968/1984 co-relation queries the response was YES. [2024-01-31 16:02:54,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 3830 events. 1870/3830 cut-off events. For 1968/1984 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29285 event pairs, 1288 based on Foata normal form. 25/3164 useless extension candidates. Maximal degree in co-relation 8715. Up to 2925 conditions per place. [2024-01-31 16:02:54,560 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 61 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-01-31 16:02:54,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 496 flow [2024-01-31 16:02:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:02:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:02:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-01-31 16:02:54,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337899543378995 [2024-01-31 16:02:54,562 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 300 flow. Second operand 6 states and 190 transitions. [2024-01-31 16:02:54,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 496 flow [2024-01-31 16:02:54,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 492 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 16:02:54,566 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 346 flow [2024-01-31 16:02:54,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-01-31 16:02:54,567 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2024-01-31 16:02:54,567 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 346 flow [2024-01-31 16:02:54,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:54,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:54,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:54,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:02:54,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:54,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:54,568 INFO L85 PathProgramCache]: Analyzing trace with hash 418265522, now seen corresponding path program 1 times [2024-01-31 16:02:54,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:54,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509438111] [2024-01-31 16:02:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:54,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:54,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:54,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509438111] [2024-01-31 16:02:54,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509438111] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:54,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:54,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:02:54,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636086847] [2024-01-31 16:02:54,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:54,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:02:54,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:54,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:02:54,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:02:54,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:02:54,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:54,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:54,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:02:54,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:55,276 INFO L124 PetriNetUnfolderBase]: 1880/3845 cut-off events. [2024-01-31 16:02:55,276 INFO L125 PetriNetUnfolderBase]: For 2188/2196 co-relation queries the response was YES. [2024-01-31 16:02:55,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 3845 events. 1880/3845 cut-off events. For 2188/2196 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29343 event pairs, 1273 based on Foata normal form. 14/3255 useless extension candidates. Maximal degree in co-relation 8994. Up to 2935 conditions per place. [2024-01-31 16:02:55,295 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 63 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-01-31 16:02:55,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 546 flow [2024-01-31 16:02:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:02:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:02:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-01-31 16:02:55,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602739726027397 [2024-01-31 16:02:55,297 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 346 flow. Second operand 5 states and 168 transitions. [2024-01-31 16:02:55,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 546 flow [2024-01-31 16:02:55,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 524 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:02:55,304 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 372 flow [2024-01-31 16:02:55,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-01-31 16:02:55,306 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-01-31 16:02:55,306 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 372 flow [2024-01-31 16:02:55,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:55,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:55,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:55,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:02:55,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:55,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:55,307 INFO L85 PathProgramCache]: Analyzing trace with hash -396236462, now seen corresponding path program 2 times [2024-01-31 16:02:55,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:55,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49481631] [2024-01-31 16:02:55,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:55,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:55,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:55,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49481631] [2024-01-31 16:02:55,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49481631] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:55,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:55,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:02:55,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392197609] [2024-01-31 16:02:55,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:55,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:02:55,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:02:55,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:02:55,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:02:55,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:55,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:55,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:02:55,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:56,035 INFO L124 PetriNetUnfolderBase]: 1870/3815 cut-off events. [2024-01-31 16:02:56,036 INFO L125 PetriNetUnfolderBase]: For 2323/2331 co-relation queries the response was YES. [2024-01-31 16:02:56,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 3815 events. 1870/3815 cut-off events. For 2323/2331 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29134 event pairs, 1284 based on Foata normal form. 14/3223 useless extension candidates. Maximal degree in co-relation 9000. Up to 2932 conditions per place. [2024-01-31 16:02:56,059 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 59 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-01-31 16:02:56,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 87 transitions, 551 flow [2024-01-31 16:02:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:02:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:02:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-01-31 16:02:56,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547945205479452 [2024-01-31 16:02:56,061 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 372 flow. Second operand 5 states and 166 transitions. [2024-01-31 16:02:56,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 87 transitions, 551 flow [2024-01-31 16:02:56,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 527 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:02:56,066 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 387 flow [2024-01-31 16:02:56,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-01-31 16:02:56,068 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2024-01-31 16:02:56,070 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 387 flow [2024-01-31 16:02:56,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:56,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:56,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:56,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:02:56,071 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:56,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:56,072 INFO L85 PathProgramCache]: Analyzing trace with hash -466628314, now seen corresponding path program 1 times [2024-01-31 16:02:56,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:56,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484542254] [2024-01-31 16:02:56,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:56,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:56,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:56,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484542254] [2024-01-31 16:02:56,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484542254] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:56,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:56,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:02:56,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507363001] [2024-01-31 16:02:56,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:56,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:02:56,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:56,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:02:56,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:02:56,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:02:56,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:56,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:56,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:02:56,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:56,792 INFO L124 PetriNetUnfolderBase]: 1886/3870 cut-off events. [2024-01-31 16:02:56,793 INFO L125 PetriNetUnfolderBase]: For 2449/2477 co-relation queries the response was YES. [2024-01-31 16:02:56,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9217 conditions, 3870 events. 1886/3870 cut-off events. For 2449/2477 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29727 event pairs, 1426 based on Foata normal form. 18/3274 useless extension candidates. Maximal degree in co-relation 9184. Up to 2938 conditions per place. [2024-01-31 16:02:56,817 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 67 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-01-31 16:02:56,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 631 flow [2024-01-31 16:02:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:02:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:02:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-01-31 16:02:56,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2024-01-31 16:02:56,819 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 387 flow. Second operand 6 states and 194 transitions. [2024-01-31 16:02:56,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 631 flow [2024-01-31 16:02:56,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:02:56,824 INFO L231 Difference]: Finished difference. Result has 99 places, 81 transitions, 464 flow [2024-01-31 16:02:56,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=99, PETRI_TRANSITIONS=81} [2024-01-31 16:02:56,825 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2024-01-31 16:02:56,825 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 81 transitions, 464 flow [2024-01-31 16:02:56,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:56,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:56,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:56,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:02:56,826 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:56,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:56,826 INFO L85 PathProgramCache]: Analyzing trace with hash -371188550, now seen corresponding path program 2 times [2024-01-31 16:02:56,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:56,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305711678] [2024-01-31 16:02:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:56,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:57,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:57,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305711678] [2024-01-31 16:02:57,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305711678] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:57,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:57,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:02:57,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268954249] [2024-01-31 16:02:57,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:57,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:02:57,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:57,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:02:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:02:57,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:02:57,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 81 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:57,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:57,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:02:57,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:57,515 INFO L124 PetriNetUnfolderBase]: 1896/3886 cut-off events. [2024-01-31 16:02:57,515 INFO L125 PetriNetUnfolderBase]: For 2707/2742 co-relation queries the response was YES. [2024-01-31 16:02:57,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9388 conditions, 3886 events. 1896/3886 cut-off events. For 2707/2742 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29817 event pairs, 1423 based on Foata normal form. 20/3295 useless extension candidates. Maximal degree in co-relation 9351. Up to 2947 conditions per place. [2024-01-31 16:02:57,539 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 65 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-01-31 16:02:57,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 683 flow [2024-01-31 16:02:57,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:02:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:02:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-01-31 16:02:57,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46301369863013697 [2024-01-31 16:02:57,541 INFO L175 Difference]: Start difference. First operand has 99 places, 81 transitions, 464 flow. Second operand 5 states and 169 transitions. [2024-01-31 16:02:57,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 683 flow [2024-01-31 16:02:57,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 669 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:02:57,546 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 508 flow [2024-01-31 16:02:57,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2024-01-31 16:02:57,547 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2024-01-31 16:02:57,548 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 508 flow [2024-01-31 16:02:57,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:57,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:57,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:57,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:02:57,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:57,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:57,549 INFO L85 PathProgramCache]: Analyzing trace with hash -370382240, now seen corresponding path program 3 times [2024-01-31 16:02:57,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:57,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68290836] [2024-01-31 16:02:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:57,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:57,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:57,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68290836] [2024-01-31 16:02:57,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68290836] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:57,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:57,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:02:57,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050102667] [2024-01-31 16:02:57,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:57,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:02:57,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:57,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:02:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:02:57,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:02:57,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:57,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:57,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:02:57,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:58,182 INFO L124 PetriNetUnfolderBase]: 1886/3876 cut-off events. [2024-01-31 16:02:58,182 INFO L125 PetriNetUnfolderBase]: For 2975/2999 co-relation queries the response was YES. [2024-01-31 16:02:58,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9378 conditions, 3876 events. 1886/3876 cut-off events. For 2975/2999 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29711 event pairs, 1417 based on Foata normal form. 21/3289 useless extension candidates. Maximal degree in co-relation 9339. Up to 2944 conditions per place. [2024-01-31 16:02:58,211 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 63 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-01-31 16:02:58,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 694 flow [2024-01-31 16:02:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:02:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:02:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-01-31 16:02:58,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-01-31 16:02:58,212 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 508 flow. Second operand 5 states and 165 transitions. [2024-01-31 16:02:58,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 694 flow [2024-01-31 16:02:58,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 95 transitions, 672 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:02:58,218 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 523 flow [2024-01-31 16:02:58,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2024-01-31 16:02:58,219 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 28 predicate places. [2024-01-31 16:02:58,219 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 523 flow [2024-01-31 16:02:58,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:58,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:58,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:58,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:02:58,220 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:58,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash 29961245, now seen corresponding path program 1 times [2024-01-31 16:02:58,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:58,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555318753] [2024-01-31 16:02:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:58,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:58,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:58,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555318753] [2024-01-31 16:02:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555318753] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:58,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:58,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:02:58,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574902766] [2024-01-31 16:02:58,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:58,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:02:58,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:58,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:02:58,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:02:58,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:02:58,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 523 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:58,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:58,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:02:58,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:58,805 INFO L124 PetriNetUnfolderBase]: 1267/2694 cut-off events. [2024-01-31 16:02:58,805 INFO L125 PetriNetUnfolderBase]: For 2729/2740 co-relation queries the response was YES. [2024-01-31 16:02:58,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6661 conditions, 2694 events. 1267/2694 cut-off events. For 2729/2740 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 20164 event pairs, 647 based on Foata normal form. 35/2315 useless extension candidates. Maximal degree in co-relation 6622. Up to 1885 conditions per place. [2024-01-31 16:02:58,820 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 65 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-01-31 16:02:58,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 763 flow [2024-01-31 16:02:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:02:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:02:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 219 transitions. [2024-01-31 16:02:58,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-31 16:02:58,822 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 523 flow. Second operand 5 states and 219 transitions. [2024-01-31 16:02:58,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 763 flow [2024-01-31 16:02:58,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 727 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:02:58,827 INFO L231 Difference]: Finished difference. Result has 107 places, 87 transitions, 561 flow [2024-01-31 16:02:58,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2024-01-31 16:02:58,828 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 30 predicate places. [2024-01-31 16:02:58,828 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 561 flow [2024-01-31 16:02:58,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:58,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:58,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:58,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:02:58,828 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:58,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1469292575, now seen corresponding path program 2 times [2024-01-31 16:02:58,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:58,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411106102] [2024-01-31 16:02:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:58,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:58,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411106102] [2024-01-31 16:02:58,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411106102] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:58,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:58,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:02:58,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558347372] [2024-01-31 16:02:58,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:58,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:02:58,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:58,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:02:58,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:02:59,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:02:59,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:59,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:59,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:02:59,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:59,367 INFO L124 PetriNetUnfolderBase]: 1251/2658 cut-off events. [2024-01-31 16:02:59,367 INFO L125 PetriNetUnfolderBase]: For 3726/3737 co-relation queries the response was YES. [2024-01-31 16:02:59,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6926 conditions, 2658 events. 1251/2658 cut-off events. For 3726/3737 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19770 event pairs, 791 based on Foata normal form. 19/2343 useless extension candidates. Maximal degree in co-relation 6886. Up to 1937 conditions per place. [2024-01-31 16:02:59,380 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 60 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-01-31 16:02:59,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 99 transitions, 745 flow [2024-01-31 16:02:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-01-31 16:02:59,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2024-01-31 16:02:59,382 INFO L175 Difference]: Start difference. First operand has 107 places, 87 transitions, 561 flow. Second operand 4 states and 177 transitions. [2024-01-31 16:02:59,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 99 transitions, 745 flow [2024-01-31 16:02:59,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 99 transitions, 733 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:02:59,387 INFO L231 Difference]: Finished difference. Result has 110 places, 87 transitions, 591 flow [2024-01-31 16:02:59,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=591, PETRI_PLACES=110, PETRI_TRANSITIONS=87} [2024-01-31 16:02:59,388 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 33 predicate places. [2024-01-31 16:02:59,388 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 87 transitions, 591 flow [2024-01-31 16:02:59,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:59,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:02:59,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:02:59,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:02:59,389 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:02:59,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:02:59,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1120323165, now seen corresponding path program 1 times [2024-01-31 16:02:59,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:02:59,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177734695] [2024-01-31 16:02:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:02:59,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:02:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:02:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:02:59,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:02:59,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177734695] [2024-01-31 16:02:59,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177734695] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:02:59,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:02:59,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:02:59,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360707205] [2024-01-31 16:02:59,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:02:59,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:02:59,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:02:59,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:02:59,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:02:59,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:02:59,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 87 transitions, 591 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:02:59,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:02:59,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:02:59,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:02:59,976 INFO L124 PetriNetUnfolderBase]: 1291/2728 cut-off events. [2024-01-31 16:02:59,976 INFO L125 PetriNetUnfolderBase]: For 4386/4406 co-relation queries the response was YES. [2024-01-31 16:02:59,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7251 conditions, 2728 events. 1291/2728 cut-off events. For 4386/4406 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 20184 event pairs, 815 based on Foata normal form. 36/2430 useless extension candidates. Maximal degree in co-relation 7209. Up to 2001 conditions per place. [2024-01-31 16:02:59,996 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 58 selfloop transitions, 17 changer transitions 0/99 dead transitions. [2024-01-31 16:02:59,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 777 flow [2024-01-31 16:02:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:02:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:02:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-01-31 16:02:59,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027397260273972 [2024-01-31 16:02:59,998 INFO L175 Difference]: Start difference. First operand has 110 places, 87 transitions, 591 flow. Second operand 4 states and 176 transitions. [2024-01-31 16:02:59,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 777 flow [2024-01-31 16:03:00,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 99 transitions, 747 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:00,006 INFO L231 Difference]: Finished difference. Result has 111 places, 89 transitions, 624 flow [2024-01-31 16:03:00,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=561, 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=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=624, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2024-01-31 16:03:00,007 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 34 predicate places. [2024-01-31 16:03:00,007 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 624 flow [2024-01-31 16:03:00,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:00,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:00,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:00,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:03:00,008 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:00,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1828067067, now seen corresponding path program 2 times [2024-01-31 16:03:00,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:00,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801671948] [2024-01-31 16:03:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:00,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:00,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:00,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801671948] [2024-01-31 16:03:00,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801671948] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:00,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891742116] [2024-01-31 16:03:00,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:00,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:00,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:00,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:00,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:00,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:00,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 624 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:00,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:00,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:00,493 INFO L124 PetriNetUnfolderBase]: 1163/2472 cut-off events. [2024-01-31 16:03:00,494 INFO L125 PetriNetUnfolderBase]: For 4939/4965 co-relation queries the response was YES. [2024-01-31 16:03:00,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6885 conditions, 2472 events. 1163/2472 cut-off events. For 4939/4965 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17867 event pairs, 751 based on Foata normal form. 42/2220 useless extension candidates. Maximal degree in co-relation 6842. Up to 1745 conditions per place. [2024-01-31 16:03:00,510 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 64 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2024-01-31 16:03:00,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 848 flow [2024-01-31 16:03:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2024-01-31 16:03:00,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.589041095890411 [2024-01-31 16:03:00,512 INFO L175 Difference]: Start difference. First operand has 111 places, 89 transitions, 624 flow. Second operand 5 states and 215 transitions. [2024-01-31 16:03:00,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 848 flow [2024-01-31 16:03:00,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 107 transitions, 817 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:00,518 INFO L231 Difference]: Finished difference. Result has 114 places, 91 transitions, 656 flow [2024-01-31 16:03:00,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=656, PETRI_PLACES=114, PETRI_TRANSITIONS=91} [2024-01-31 16:03:00,519 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-01-31 16:03:00,519 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 91 transitions, 656 flow [2024-01-31 16:03:00,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:00,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:00,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:00,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:03:00,520 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:00,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1123882897, now seen corresponding path program 1 times [2024-01-31 16:03:00,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:00,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827116106] [2024-01-31 16:03:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:00,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:00,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:00,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827116106] [2024-01-31 16:03:00,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827116106] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:00,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:00,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399845898] [2024-01-31 16:03:00,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:00,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:00,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:00,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 91 transitions, 656 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:00,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:00,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:00,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:01,214 INFO L124 PetriNetUnfolderBase]: 1647/3333 cut-off events. [2024-01-31 16:03:01,214 INFO L125 PetriNetUnfolderBase]: For 6110/6127 co-relation queries the response was YES. [2024-01-31 16:03:01,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9268 conditions, 3333 events. 1647/3333 cut-off events. For 6110/6127 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 23824 event pairs, 762 based on Foata normal form. 26/2990 useless extension candidates. Maximal degree in co-relation 9224. Up to 2377 conditions per place. [2024-01-31 16:03:01,235 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 84 selfloop transitions, 21 changer transitions 0/121 dead transitions. [2024-01-31 16:03:01,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 958 flow [2024-01-31 16:03:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:01,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-01-31 16:03:01,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-01-31 16:03:01,238 INFO L175 Difference]: Start difference. First operand has 114 places, 91 transitions, 656 flow. Second operand 6 states and 207 transitions. [2024-01-31 16:03:01,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 958 flow [2024-01-31 16:03:01,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 919 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:01,247 INFO L231 Difference]: Finished difference. Result has 118 places, 94 transitions, 693 flow [2024-01-31 16:03:01,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=693, PETRI_PLACES=118, PETRI_TRANSITIONS=94} [2024-01-31 16:03:01,247 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 41 predicate places. [2024-01-31 16:03:01,247 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 94 transitions, 693 flow [2024-01-31 16:03:01,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:01,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:01,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:01,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:03:01,248 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:01,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:01,249 INFO L85 PathProgramCache]: Analyzing trace with hash 617494199, now seen corresponding path program 1 times [2024-01-31 16:03:01,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:01,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479648399] [2024-01-31 16:03:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:01,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:01,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:01,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479648399] [2024-01-31 16:03:01,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479648399] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:01,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:01,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:01,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891086666] [2024-01-31 16:03:01,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:01,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:01,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:01,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 94 transitions, 693 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:01,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:01,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:01,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:02,012 INFO L124 PetriNetUnfolderBase]: 1701/3467 cut-off events. [2024-01-31 16:03:02,013 INFO L125 PetriNetUnfolderBase]: For 6344/6420 co-relation queries the response was YES. [2024-01-31 16:03:02,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9754 conditions, 3467 events. 1701/3467 cut-off events. For 6344/6420 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24800 event pairs, 832 based on Foata normal form. 36/3112 useless extension candidates. Maximal degree in co-relation 9708. Up to 2445 conditions per place. [2024-01-31 16:03:02,050 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 81 selfloop transitions, 25 changer transitions 0/123 dead transitions. [2024-01-31 16:03:02,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 123 transitions, 980 flow [2024-01-31 16:03:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-01-31 16:03:02,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500978473581213 [2024-01-31 16:03:02,054 INFO L175 Difference]: Start difference. First operand has 118 places, 94 transitions, 693 flow. Second operand 7 states and 230 transitions. [2024-01-31 16:03:02,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 123 transitions, 980 flow [2024-01-31 16:03:02,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 123 transitions, 940 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:02,065 INFO L231 Difference]: Finished difference. Result has 121 places, 94 transitions, 711 flow [2024-01-31 16:03:02,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=711, PETRI_PLACES=121, PETRI_TRANSITIONS=94} [2024-01-31 16:03:02,066 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 44 predicate places. [2024-01-31 16:03:02,066 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 94 transitions, 711 flow [2024-01-31 16:03:02,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:02,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:02,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:02,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:03:02,067 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:02,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:02,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1003816937, now seen corresponding path program 2 times [2024-01-31 16:03:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986551649] [2024-01-31 16:03:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:02,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:02,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:02,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986551649] [2024-01-31 16:03:02,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986551649] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:02,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:02,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:02,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472704149] [2024-01-31 16:03:02,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:02,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:02,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:02,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:02,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 94 transitions, 711 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:02,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:02,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:02,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:02,795 INFO L124 PetriNetUnfolderBase]: 1587/3237 cut-off events. [2024-01-31 16:03:02,795 INFO L125 PetriNetUnfolderBase]: For 6461/6478 co-relation queries the response was YES. [2024-01-31 16:03:02,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9333 conditions, 3237 events. 1587/3237 cut-off events. For 6461/6478 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 23005 event pairs, 1029 based on Foata normal form. 38/2906 useless extension candidates. Maximal degree in co-relation 9286. Up to 2454 conditions per place. [2024-01-31 16:03:02,814 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 76 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2024-01-31 16:03:02,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 109 transitions, 940 flow [2024-01-31 16:03:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-01-31 16:03:02,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-01-31 16:03:02,816 INFO L175 Difference]: Start difference. First operand has 121 places, 94 transitions, 711 flow. Second operand 6 states and 192 transitions. [2024-01-31 16:03:02,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 109 transitions, 940 flow [2024-01-31 16:03:02,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 109 transitions, 877 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-31 16:03:02,826 INFO L231 Difference]: Finished difference. Result has 120 places, 94 transitions, 689 flow [2024-01-31 16:03:02,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=689, PETRI_PLACES=120, PETRI_TRANSITIONS=94} [2024-01-31 16:03:02,826 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 43 predicate places. [2024-01-31 16:03:02,826 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 94 transitions, 689 flow [2024-01-31 16:03:02,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:02,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:02,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:02,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:03:02,827 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:02,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1120403133, now seen corresponding path program 1 times [2024-01-31 16:03:02,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:02,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789187901] [2024-01-31 16:03:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:02,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:03,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789187901] [2024-01-31 16:03:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789187901] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:03,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:03,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:03,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109072215] [2024-01-31 16:03:03,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:03,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:03,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:03,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:03,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 94 transitions, 689 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:03,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:03,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:03,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:03,614 INFO L124 PetriNetUnfolderBase]: 1694/3442 cut-off events. [2024-01-31 16:03:03,614 INFO L125 PetriNetUnfolderBase]: For 6728/6801 co-relation queries the response was YES. [2024-01-31 16:03:03,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9885 conditions, 3442 events. 1694/3442 cut-off events. For 6728/6801 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24580 event pairs, 1003 based on Foata normal form. 42/3084 useless extension candidates. Maximal degree in co-relation 9838. Up to 2539 conditions per place. [2024-01-31 16:03:03,644 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 90 selfloop transitions, 21 changer transitions 0/128 dead transitions. [2024-01-31 16:03:03,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 128 transitions, 1026 flow [2024-01-31 16:03:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-01-31 16:03:03,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-01-31 16:03:03,646 INFO L175 Difference]: Start difference. First operand has 120 places, 94 transitions, 689 flow. Second operand 8 states and 252 transitions. [2024-01-31 16:03:03,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 128 transitions, 1026 flow [2024-01-31 16:03:03,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 128 transitions, 982 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:03,657 INFO L231 Difference]: Finished difference. Result has 123 places, 98 transitions, 730 flow [2024-01-31 16:03:03,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=730, PETRI_PLACES=123, PETRI_TRANSITIONS=98} [2024-01-31 16:03:03,657 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-01-31 16:03:03,657 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 98 transitions, 730 flow [2024-01-31 16:03:03,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:03,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:03,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:03,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:03:03,658 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:03,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:03,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1491555783, now seen corresponding path program 2 times [2024-01-31 16:03:03,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:03,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715591776] [2024-01-31 16:03:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715591776] [2024-01-31 16:03:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715591776] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:03,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29252261] [2024-01-31 16:03:03,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:03,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:03,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:03,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:03,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 98 transitions, 730 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:03,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:03,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:03,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:04,420 INFO L124 PetriNetUnfolderBase]: 1737/3512 cut-off events. [2024-01-31 16:03:04,420 INFO L125 PetriNetUnfolderBase]: For 6915/6993 co-relation queries the response was YES. [2024-01-31 16:03:04,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10246 conditions, 3512 events. 1737/3512 cut-off events. For 6915/6993 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25011 event pairs, 1003 based on Foata normal form. 48/3160 useless extension candidates. Maximal degree in co-relation 10199. Up to 2699 conditions per place. [2024-01-31 16:03:04,437 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 86 selfloop transitions, 21 changer transitions 0/124 dead transitions. [2024-01-31 16:03:04,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 124 transitions, 1033 flow [2024-01-31 16:03:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-01-31 16:03:04,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344422700587084 [2024-01-31 16:03:04,440 INFO L175 Difference]: Start difference. First operand has 123 places, 98 transitions, 730 flow. Second operand 7 states and 222 transitions. [2024-01-31 16:03:04,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 124 transitions, 1033 flow [2024-01-31 16:03:04,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 124 transitions, 969 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:04,450 INFO L231 Difference]: Finished difference. Result has 124 places, 102 transitions, 763 flow [2024-01-31 16:03:04,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=763, PETRI_PLACES=124, PETRI_TRANSITIONS=102} [2024-01-31 16:03:04,451 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 47 predicate places. [2024-01-31 16:03:04,451 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 102 transitions, 763 flow [2024-01-31 16:03:04,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:04,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:04,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:04,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:03:04,452 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:04,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1634300157, now seen corresponding path program 1 times [2024-01-31 16:03:04,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:04,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665341335] [2024-01-31 16:03:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:04,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:04,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:04,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665341335] [2024-01-31 16:03:04,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665341335] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:04,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:04,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:04,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274814610] [2024-01-31 16:03:04,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:04,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:04,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:04,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:04,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:04,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:04,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 102 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:04,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:04,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:04,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:05,175 INFO L124 PetriNetUnfolderBase]: 1627/3322 cut-off events. [2024-01-31 16:03:05,175 INFO L125 PetriNetUnfolderBase]: For 7090/7107 co-relation queries the response was YES. [2024-01-31 16:03:05,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9874 conditions, 3322 events. 1627/3322 cut-off events. For 7090/7107 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23648 event pairs, 1008 based on Foata normal form. 32/2985 useless extension candidates. Maximal degree in co-relation 9827. Up to 2451 conditions per place. [2024-01-31 16:03:05,198 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 76 selfloop transitions, 26 changer transitions 0/118 dead transitions. [2024-01-31 16:03:05,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 118 transitions, 1008 flow [2024-01-31 16:03:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-01-31 16:03:05,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2024-01-31 16:03:05,200 INFO L175 Difference]: Start difference. First operand has 124 places, 102 transitions, 763 flow. Second operand 6 states and 194 transitions. [2024-01-31 16:03:05,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 118 transitions, 1008 flow [2024-01-31 16:03:05,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 118 transitions, 967 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:05,211 INFO L231 Difference]: Finished difference. Result has 125 places, 102 transitions, 794 flow [2024-01-31 16:03:05,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=794, PETRI_PLACES=125, PETRI_TRANSITIONS=102} [2024-01-31 16:03:05,211 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 48 predicate places. [2024-01-31 16:03:05,211 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 102 transitions, 794 flow [2024-01-31 16:03:05,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:05,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:05,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:05,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-31 16:03:05,212 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:05,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:05,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1753976769, now seen corresponding path program 2 times [2024-01-31 16:03:05,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:05,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777314768] [2024-01-31 16:03:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:05,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:05,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777314768] [2024-01-31 16:03:05,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777314768] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:05,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:05,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:05,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827773141] [2024-01-31 16:03:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:05,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:05,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:05,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:05,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:05,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 102 transitions, 794 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:05,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:05,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:05,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:05,998 INFO L124 PetriNetUnfolderBase]: 1720/3495 cut-off events. [2024-01-31 16:03:05,999 INFO L125 PetriNetUnfolderBase]: For 7958/8031 co-relation queries the response was YES. [2024-01-31 16:03:06,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10681 conditions, 3495 events. 1720/3495 cut-off events. For 7958/8031 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24974 event pairs, 997 based on Foata normal form. 39/3128 useless extension candidates. Maximal degree in co-relation 10633. Up to 2677 conditions per place. [2024-01-31 16:03:06,021 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 90 selfloop transitions, 19 changer transitions 0/126 dead transitions. [2024-01-31 16:03:06,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 1099 flow [2024-01-31 16:03:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-31 16:03:06,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43052837573385516 [2024-01-31 16:03:06,022 INFO L175 Difference]: Start difference. First operand has 125 places, 102 transitions, 794 flow. Second operand 7 states and 220 transitions. [2024-01-31 16:03:06,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 1099 flow [2024-01-31 16:03:06,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 1025 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:06,036 INFO L231 Difference]: Finished difference. Result has 126 places, 106 transitions, 809 flow [2024-01-31 16:03:06,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=809, PETRI_PLACES=126, PETRI_TRANSITIONS=106} [2024-01-31 16:03:06,037 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 49 predicate places. [2024-01-31 16:03:06,037 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 106 transitions, 809 flow [2024-01-31 16:03:06,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:06,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:06,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:06,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-31 16:03:06,038 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:06,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:06,038 INFO L85 PathProgramCache]: Analyzing trace with hash 422017743, now seen corresponding path program 2 times [2024-01-31 16:03:06,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:06,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591872951] [2024-01-31 16:03:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:06,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:06,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:06,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591872951] [2024-01-31 16:03:06,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591872951] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:06,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:06,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:06,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846608711] [2024-01-31 16:03:06,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:06,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:06,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:06,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:06,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:06,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:06,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 106 transitions, 809 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:06,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:06,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:06,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:06,745 INFO L124 PetriNetUnfolderBase]: 1637/3341 cut-off events. [2024-01-31 16:03:06,746 INFO L125 PetriNetUnfolderBase]: For 7444/7461 co-relation queries the response was YES. [2024-01-31 16:03:06,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10056 conditions, 3341 events. 1637/3341 cut-off events. For 7444/7461 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23718 event pairs, 1005 based on Foata normal form. 26/2998 useless extension candidates. Maximal degree in co-relation 10008. Up to 2358 conditions per place. [2024-01-31 16:03:06,769 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 80 selfloop transitions, 32 changer transitions 0/128 dead transitions. [2024-01-31 16:03:06,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 1094 flow [2024-01-31 16:03:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-01-31 16:03:06,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436399217221135 [2024-01-31 16:03:06,772 INFO L175 Difference]: Start difference. First operand has 126 places, 106 transitions, 809 flow. Second operand 7 states and 223 transitions. [2024-01-31 16:03:06,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 1094 flow [2024-01-31 16:03:06,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 1066 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:06,785 INFO L231 Difference]: Finished difference. Result has 129 places, 106 transitions, 854 flow [2024-01-31 16:03:06,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=854, PETRI_PLACES=129, PETRI_TRANSITIONS=106} [2024-01-31 16:03:06,785 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 52 predicate places. [2024-01-31 16:03:06,785 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 106 transitions, 854 flow [2024-01-31 16:03:06,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:06,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:06,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:06,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-31 16:03:06,786 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:06,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1753198359, now seen corresponding path program 3 times [2024-01-31 16:03:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:06,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295971421] [2024-01-31 16:03:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:06,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:07,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:07,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295971421] [2024-01-31 16:03:07,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295971421] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:07,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:07,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:07,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275352474] [2024-01-31 16:03:07,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:07,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:07,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:07,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:07,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:07,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 106 transitions, 854 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:07,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:07,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:07,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:07,579 INFO L124 PetriNetUnfolderBase]: 1710/3471 cut-off events. [2024-01-31 16:03:07,580 INFO L125 PetriNetUnfolderBase]: For 8272/8365 co-relation queries the response was YES. [2024-01-31 16:03:07,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10689 conditions, 3471 events. 1710/3471 cut-off events. For 8272/8365 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24793 event pairs, 1002 based on Foata normal form. 62/3123 useless extension candidates. Maximal degree in co-relation 10641. Up to 2466 conditions per place. [2024-01-31 16:03:07,599 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 86 selfloop transitions, 29 changer transitions 0/132 dead transitions. [2024-01-31 16:03:07,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 132 transitions, 1157 flow [2024-01-31 16:03:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-01-31 16:03:07,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2024-01-31 16:03:07,601 INFO L175 Difference]: Start difference. First operand has 129 places, 106 transitions, 854 flow. Second operand 7 states and 227 transitions. [2024-01-31 16:03:07,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 132 transitions, 1157 flow [2024-01-31 16:03:07,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 132 transitions, 1089 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:07,615 INFO L231 Difference]: Finished difference. Result has 130 places, 108 transitions, 863 flow [2024-01-31 16:03:07,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=863, PETRI_PLACES=130, PETRI_TRANSITIONS=108} [2024-01-31 16:03:07,615 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 53 predicate places. [2024-01-31 16:03:07,615 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 108 transitions, 863 flow [2024-01-31 16:03:07,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:07,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:07,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:07,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-31 16:03:07,616 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:07,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:07,616 INFO L85 PathProgramCache]: Analyzing trace with hash -249829455, now seen corresponding path program 3 times [2024-01-31 16:03:07,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:07,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844093121] [2024-01-31 16:03:07,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:07,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:07,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844093121] [2024-01-31 16:03:07,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844093121] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:07,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:07,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:07,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089639099] [2024-01-31 16:03:07,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:07,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:07,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:07,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:07,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:07,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:07,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 108 transitions, 863 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:07,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:07,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:07,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:08,397 INFO L124 PetriNetUnfolderBase]: 1753/3549 cut-off events. [2024-01-31 16:03:08,397 INFO L125 PetriNetUnfolderBase]: For 8672/8782 co-relation queries the response was YES. [2024-01-31 16:03:08,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11055 conditions, 3549 events. 1753/3549 cut-off events. For 8672/8782 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25232 event pairs, 991 based on Foata normal form. 66/3212 useless extension candidates. Maximal degree in co-relation 11006. Up to 2674 conditions per place. [2024-01-31 16:03:08,422 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 96 selfloop transitions, 25 changer transitions 0/138 dead transitions. [2024-01-31 16:03:08,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 138 transitions, 1208 flow [2024-01-31 16:03:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-01-31 16:03:08,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:03:08,426 INFO L175 Difference]: Start difference. First operand has 130 places, 108 transitions, 863 flow. Second operand 8 states and 250 transitions. [2024-01-31 16:03:08,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 138 transitions, 1208 flow [2024-01-31 16:03:08,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 138 transitions, 1167 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:08,440 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 935 flow [2024-01-31 16:03:08,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=935, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-01-31 16:03:08,440 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-01-31 16:03:08,441 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 935 flow [2024-01-31 16:03:08,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:08,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:08,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:08,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-31 16:03:08,441 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:08,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:08,441 INFO L85 PathProgramCache]: Analyzing trace with hash -252783811, now seen corresponding path program 4 times [2024-01-31 16:03:08,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:08,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486805261] [2024-01-31 16:03:08,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:08,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:08,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:08,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486805261] [2024-01-31 16:03:08,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486805261] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:08,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:08,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:08,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195884120] [2024-01-31 16:03:08,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:08,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:08,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:08,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:08,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:08,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:08,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 935 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:08,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:08,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:08,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:09,282 INFO L124 PetriNetUnfolderBase]: 1743/3530 cut-off events. [2024-01-31 16:03:09,282 INFO L125 PetriNetUnfolderBase]: For 9740/9849 co-relation queries the response was YES. [2024-01-31 16:03:09,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11218 conditions, 3530 events. 1743/3530 cut-off events. For 9740/9849 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25159 event pairs, 991 based on Foata normal form. 54/3172 useless extension candidates. Maximal degree in co-relation 11168. Up to 2660 conditions per place. [2024-01-31 16:03:09,306 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 89 selfloop transitions, 24 changer transitions 0/130 dead transitions. [2024-01-31 16:03:09,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 130 transitions, 1204 flow [2024-01-31 16:03:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-01-31 16:03:09,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2024-01-31 16:03:09,308 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 935 flow. Second operand 6 states and 194 transitions. [2024-01-31 16:03:09,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 130 transitions, 1204 flow [2024-01-31 16:03:09,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 1147 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:09,323 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 937 flow [2024-01-31 16:03:09,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=937, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-01-31 16:03:09,323 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-01-31 16:03:09,323 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 937 flow [2024-01-31 16:03:09,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:09,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:09,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:09,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-31 16:03:09,324 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:09,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash -252802685, now seen corresponding path program 4 times [2024-01-31 16:03:09,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38642980] [2024-01-31 16:03:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:09,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:09,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38642980] [2024-01-31 16:03:09,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38642980] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:09,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:09,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:09,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559179684] [2024-01-31 16:03:09,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:09,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:09,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:09,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:09,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:09,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:09,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 937 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:09,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:09,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:09,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:10,080 INFO L124 PetriNetUnfolderBase]: 1723/3525 cut-off events. [2024-01-31 16:03:10,080 INFO L125 PetriNetUnfolderBase]: For 9637/9740 co-relation queries the response was YES. [2024-01-31 16:03:10,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11065 conditions, 3525 events. 1723/3525 cut-off events. For 9637/9740 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25098 event pairs, 784 based on Foata normal form. 54/3179 useless extension candidates. Maximal degree in co-relation 11014. Up to 2530 conditions per place. [2024-01-31 16:03:10,099 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 81 selfloop transitions, 35 changer transitions 0/133 dead transitions. [2024-01-31 16:03:10,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 133 transitions, 1220 flow [2024-01-31 16:03:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-01-31 16:03:10,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454337899543379 [2024-01-31 16:03:10,101 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 937 flow. Second operand 6 states and 199 transitions. [2024-01-31 16:03:10,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 133 transitions, 1220 flow [2024-01-31 16:03:10,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 133 transitions, 1161 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:10,115 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 974 flow [2024-01-31 16:03:10,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=974, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-01-31 16:03:10,117 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-01-31 16:03:10,117 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 974 flow [2024-01-31 16:03:10,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:10,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:10,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:10,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-31 16:03:10,118 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:10,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:10,118 INFO L85 PathProgramCache]: Analyzing trace with hash 518153639, now seen corresponding path program 5 times [2024-01-31 16:03:10,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:10,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390539346] [2024-01-31 16:03:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:10,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:10,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:10,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390539346] [2024-01-31 16:03:10,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390539346] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:10,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:10,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:10,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079713799] [2024-01-31 16:03:10,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:10,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:10,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:10,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:10,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 974 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:10,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:10,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:10,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:10,835 INFO L124 PetriNetUnfolderBase]: 1743/3522 cut-off events. [2024-01-31 16:03:10,835 INFO L125 PetriNetUnfolderBase]: For 10613/10713 co-relation queries the response was YES. [2024-01-31 16:03:10,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11396 conditions, 3522 events. 1743/3522 cut-off events. For 10613/10713 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25082 event pairs, 987 based on Foata normal form. 74/3180 useless extension candidates. Maximal degree in co-relation 11345. Up to 2510 conditions per place. [2024-01-31 16:03:10,856 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 86 selfloop transitions, 32 changer transitions 0/135 dead transitions. [2024-01-31 16:03:10,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 135 transitions, 1275 flow [2024-01-31 16:03:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-01-31 16:03:10,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45662100456621 [2024-01-31 16:03:10,858 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 974 flow. Second operand 6 states and 200 transitions. [2024-01-31 16:03:10,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 135 transitions, 1275 flow [2024-01-31 16:03:10,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 135 transitions, 1190 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:10,877 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 973 flow [2024-01-31 16:03:10,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=973, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-01-31 16:03:10,878 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-01-31 16:03:10,878 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 973 flow [2024-01-31 16:03:10,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:10,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:10,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:10,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-31 16:03:10,879 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:10,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 544965539, now seen corresponding path program 6 times [2024-01-31 16:03:10,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:10,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484857377] [2024-01-31 16:03:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:10,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:11,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:11,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484857377] [2024-01-31 16:03:11,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484857377] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:11,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:11,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:11,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16790640] [2024-01-31 16:03:11,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:11,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:11,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:11,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:11,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:11,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:11,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 973 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:11,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:11,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:11,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:11,628 INFO L124 PetriNetUnfolderBase]: 1765/3562 cut-off events. [2024-01-31 16:03:11,628 INFO L125 PetriNetUnfolderBase]: For 9482/9564 co-relation queries the response was YES. [2024-01-31 16:03:11,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11272 conditions, 3562 events. 1765/3562 cut-off events. For 9482/9564 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25346 event pairs, 1001 based on Foata normal form. 76/3224 useless extension candidates. Maximal degree in co-relation 11221. Up to 2535 conditions per place. [2024-01-31 16:03:11,645 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 82 selfloop transitions, 39 changer transitions 0/138 dead transitions. [2024-01-31 16:03:11,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 138 transitions, 1307 flow [2024-01-31 16:03:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-01-31 16:03:11,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497716894977169 [2024-01-31 16:03:11,646 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 973 flow. Second operand 6 states and 197 transitions. [2024-01-31 16:03:11,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 138 transitions, 1307 flow [2024-01-31 16:03:11,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 138 transitions, 1248 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:11,658 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1078 flow [2024-01-31 16:03:11,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1078, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-01-31 16:03:11,659 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 60 predicate places. [2024-01-31 16:03:11,659 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1078 flow [2024-01-31 16:03:11,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:11,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:11,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:11,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-31 16:03:11,659 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:11,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash 919256150, now seen corresponding path program 1 times [2024-01-31 16:03:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:11,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414703159] [2024-01-31 16:03:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:11,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:11,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414703159] [2024-01-31 16:03:11,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414703159] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:11,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:11,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:11,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156690063] [2024-01-31 16:03:11,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:11,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:11,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:11,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1078 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:11,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:11,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:11,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:12,224 INFO L124 PetriNetUnfolderBase]: 1255/2712 cut-off events. [2024-01-31 16:03:12,224 INFO L125 PetriNetUnfolderBase]: For 9257/9321 co-relation queries the response was YES. [2024-01-31 16:03:12,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8818 conditions, 2712 events. 1255/2712 cut-off events. For 9257/9321 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19806 event pairs, 714 based on Foata normal form. 46/2451 useless extension candidates. Maximal degree in co-relation 8766. Up to 1874 conditions per place. [2024-01-31 16:03:12,243 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 109 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2024-01-31 16:03:12,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 156 transitions, 1571 flow [2024-01-31 16:03:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2024-01-31 16:03:12,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5730593607305936 [2024-01-31 16:03:12,245 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1078 flow. Second operand 6 states and 251 transitions. [2024-01-31 16:03:12,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 156 transitions, 1571 flow [2024-01-31 16:03:12,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 156 transitions, 1510 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:12,257 INFO L231 Difference]: Finished difference. Result has 141 places, 135 transitions, 1247 flow [2024-01-31 16:03:12,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1247, PETRI_PLACES=141, PETRI_TRANSITIONS=135} [2024-01-31 16:03:12,258 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 64 predicate places. [2024-01-31 16:03:12,258 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 135 transitions, 1247 flow [2024-01-31 16:03:12,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:12,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:12,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:12,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-31 16:03:12,259 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:12,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:12,259 INFO L85 PathProgramCache]: Analyzing trace with hash -531052406, now seen corresponding path program 1 times [2024-01-31 16:03:12,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:12,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245739921] [2024-01-31 16:03:12,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:12,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:12,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:12,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245739921] [2024-01-31 16:03:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245739921] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:12,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:12,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:12,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657944814] [2024-01-31 16:03:12,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:12,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:12,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:12,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:12,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 135 transitions, 1247 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:12,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:12,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:12,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:12,808 INFO L124 PetriNetUnfolderBase]: 1225/2603 cut-off events. [2024-01-31 16:03:12,809 INFO L125 PetriNetUnfolderBase]: For 9172/9229 co-relation queries the response was YES. [2024-01-31 16:03:12,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 2603 events. 1225/2603 cut-off events. For 9172/9229 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 18471 event pairs, 706 based on Foata normal form. 57/2376 useless extension candidates. Maximal degree in co-relation 8586. Up to 1860 conditions per place. [2024-01-31 16:03:12,823 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 114 selfloop transitions, 28 changer transitions 0/168 dead transitions. [2024-01-31 16:03:12,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 168 transitions, 1774 flow [2024-01-31 16:03:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 247 transitions. [2024-01-31 16:03:12,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5639269406392694 [2024-01-31 16:03:12,824 INFO L175 Difference]: Start difference. First operand has 141 places, 135 transitions, 1247 flow. Second operand 6 states and 247 transitions. [2024-01-31 16:03:12,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 168 transitions, 1774 flow [2024-01-31 16:03:12,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 168 transitions, 1772 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-31 16:03:12,837 INFO L231 Difference]: Finished difference. Result has 150 places, 154 transitions, 1557 flow [2024-01-31 16:03:12,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1557, PETRI_PLACES=150, PETRI_TRANSITIONS=154} [2024-01-31 16:03:12,838 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 73 predicate places. [2024-01-31 16:03:12,838 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 154 transitions, 1557 flow [2024-01-31 16:03:12,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:12,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:12,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:12,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-01-31 16:03:12,838 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:12,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:12,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2129257844, now seen corresponding path program 1 times [2024-01-31 16:03:12,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:12,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319355396] [2024-01-31 16:03:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:12,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319355396] [2024-01-31 16:03:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319355396] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:13,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:13,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:13,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137726399] [2024-01-31 16:03:13,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:13,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:13,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:13,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:13,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:13,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 154 transitions, 1557 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:13,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:13,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:13,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:13,567 INFO L124 PetriNetUnfolderBase]: 1419/2936 cut-off events. [2024-01-31 16:03:13,567 INFO L125 PetriNetUnfolderBase]: For 12199/12261 co-relation queries the response was YES. [2024-01-31 16:03:13,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10216 conditions, 2936 events. 1419/2936 cut-off events. For 12199/12261 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20936 event pairs, 560 based on Foata normal form. 108/2805 useless extension candidates. Maximal degree in co-relation 10156. Up to 1725 conditions per place. [2024-01-31 16:03:13,592 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 93 selfloop transitions, 71 changer transitions 0/190 dead transitions. [2024-01-31 16:03:13,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 190 transitions, 2057 flow [2024-01-31 16:03:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 332 transitions. [2024-01-31 16:03:13,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684931506849316 [2024-01-31 16:03:13,593 INFO L175 Difference]: Start difference. First operand has 150 places, 154 transitions, 1557 flow. Second operand 8 states and 332 transitions. [2024-01-31 16:03:13,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 190 transitions, 2057 flow [2024-01-31 16:03:13,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 190 transitions, 2051 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-31 16:03:13,614 INFO L231 Difference]: Finished difference. Result has 159 places, 158 transitions, 1744 flow [2024-01-31 16:03:13,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1744, PETRI_PLACES=159, PETRI_TRANSITIONS=158} [2024-01-31 16:03:13,615 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 82 predicate places. [2024-01-31 16:03:13,615 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 158 transitions, 1744 flow [2024-01-31 16:03:13,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:13,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:13,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:13,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-01-31 16:03:13,615 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:13,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:13,616 INFO L85 PathProgramCache]: Analyzing trace with hash 643868386, now seen corresponding path program 2 times [2024-01-31 16:03:13,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:13,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118945568] [2024-01-31 16:03:13,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:13,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:13,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:13,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118945568] [2024-01-31 16:03:13,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118945568] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:13,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:13,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:13,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922476184] [2024-01-31 16:03:13,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:13,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:13,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:13,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:13,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:13,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 158 transitions, 1744 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:13,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:13,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:13,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:14,395 INFO L124 PetriNetUnfolderBase]: 1499/3070 cut-off events. [2024-01-31 16:03:14,395 INFO L125 PetriNetUnfolderBase]: For 15538/15600 co-relation queries the response was YES. [2024-01-31 16:03:14,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11379 conditions, 3070 events. 1499/3070 cut-off events. For 15538/15600 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 22003 event pairs, 631 based on Foata normal form. 76/2907 useless extension candidates. Maximal degree in co-relation 11315. Up to 1878 conditions per place. [2024-01-31 16:03:14,418 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 91 selfloop transitions, 69 changer transitions 0/186 dead transitions. [2024-01-31 16:03:14,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 186 transitions, 2212 flow [2024-01-31 16:03:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:14,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 259 transitions. [2024-01-31 16:03:14,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591324200913242 [2024-01-31 16:03:14,419 INFO L175 Difference]: Start difference. First operand has 159 places, 158 transitions, 1744 flow. Second operand 6 states and 259 transitions. [2024-01-31 16:03:14,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 186 transitions, 2212 flow [2024-01-31 16:03:14,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 186 transitions, 2115 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:14,443 INFO L231 Difference]: Finished difference. Result has 161 places, 160 transitions, 1813 flow [2024-01-31 16:03:14,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1649, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1813, PETRI_PLACES=161, PETRI_TRANSITIONS=160} [2024-01-31 16:03:14,443 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 84 predicate places. [2024-01-31 16:03:14,444 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 160 transitions, 1813 flow [2024-01-31 16:03:14,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:14,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:14,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:14,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-01-31 16:03:14,444 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:14,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:14,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1053457694, now seen corresponding path program 3 times [2024-01-31 16:03:14,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:14,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047379932] [2024-01-31 16:03:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:14,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:14,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:14,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047379932] [2024-01-31 16:03:14,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047379932] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:14,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:14,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:14,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438152765] [2024-01-31 16:03:14,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:14,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:14,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:14,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:14,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 160 transitions, 1813 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:14,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:14,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:14,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:15,193 INFO L124 PetriNetUnfolderBase]: 1467/3022 cut-off events. [2024-01-31 16:03:15,193 INFO L125 PetriNetUnfolderBase]: For 15630/15692 co-relation queries the response was YES. [2024-01-31 16:03:15,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11294 conditions, 3022 events. 1467/3022 cut-off events. For 15630/15692 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21601 event pairs, 611 based on Foata normal form. 76/2859 useless extension candidates. Maximal degree in co-relation 11228. Up to 1870 conditions per place. [2024-01-31 16:03:15,221 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 93 selfloop transitions, 69 changer transitions 0/188 dead transitions. [2024-01-31 16:03:15,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 188 transitions, 2257 flow [2024-01-31 16:03:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 293 transitions. [2024-01-31 16:03:15,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733855185909981 [2024-01-31 16:03:15,222 INFO L175 Difference]: Start difference. First operand has 161 places, 160 transitions, 1813 flow. Second operand 7 states and 293 transitions. [2024-01-31 16:03:15,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 188 transitions, 2257 flow [2024-01-31 16:03:15,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 188 transitions, 2156 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:15,252 INFO L231 Difference]: Finished difference. Result has 165 places, 160 transitions, 1860 flow [2024-01-31 16:03:15,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1860, PETRI_PLACES=165, PETRI_TRANSITIONS=160} [2024-01-31 16:03:15,253 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 88 predicate places. [2024-01-31 16:03:15,253 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 160 transitions, 1860 flow [2024-01-31 16:03:15,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:15,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:15,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:15,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-01-31 16:03:15,254 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:15,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:15,254 INFO L85 PathProgramCache]: Analyzing trace with hash 718560932, now seen corresponding path program 4 times [2024-01-31 16:03:15,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:15,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444576038] [2024-01-31 16:03:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:15,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:15,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:15,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444576038] [2024-01-31 16:03:15,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444576038] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:15,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:15,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:15,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656933413] [2024-01-31 16:03:15,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:15,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:15,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:15,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:15,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:15,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:15,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:15,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:15,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:15,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:16,066 INFO L124 PetriNetUnfolderBase]: 1211/2478 cut-off events. [2024-01-31 16:03:16,066 INFO L125 PetriNetUnfolderBase]: For 15189/15251 co-relation queries the response was YES. [2024-01-31 16:03:16,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9657 conditions, 2478 events. 1211/2478 cut-off events. For 15189/15251 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16842 event pairs, 451 based on Foata normal form. 92/2405 useless extension candidates. Maximal degree in co-relation 9590. Up to 1325 conditions per place. [2024-01-31 16:03:16,087 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 90 selfloop transitions, 77 changer transitions 0/193 dead transitions. [2024-01-31 16:03:16,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 193 transitions, 2340 flow [2024-01-31 16:03:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:16,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 330 transitions. [2024-01-31 16:03:16,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565068493150685 [2024-01-31 16:03:16,089 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 1860 flow. Second operand 8 states and 330 transitions. [2024-01-31 16:03:16,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 193 transitions, 2340 flow [2024-01-31 16:03:16,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 193 transitions, 2157 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:03:16,117 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 1860 flow [2024-01-31 16:03:16,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1860, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2024-01-31 16:03:16,117 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 89 predicate places. [2024-01-31 16:03:16,118 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 1860 flow [2024-01-31 16:03:16,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:16,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:16,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:16,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-01-31 16:03:16,118 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:16,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:16,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2014685492, now seen corresponding path program 1 times [2024-01-31 16:03:16,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:16,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744330875] [2024-01-31 16:03:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:16,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:16,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:16,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744330875] [2024-01-31 16:03:16,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744330875] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:16,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:16,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:16,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137169760] [2024-01-31 16:03:16,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:16,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:16,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:16,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:16,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:16,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:16,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 1860 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:16,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:16,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:16,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:17,048 INFO L124 PetriNetUnfolderBase]: 1646/3208 cut-off events. [2024-01-31 16:03:17,048 INFO L125 PetriNetUnfolderBase]: For 16323/16434 co-relation queries the response was YES. [2024-01-31 16:03:17,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12337 conditions, 3208 events. 1646/3208 cut-off events. For 16323/16434 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 20825 event pairs, 522 based on Foata normal form. 69/3074 useless extension candidates. Maximal degree in co-relation 12269. Up to 1749 conditions per place. [2024-01-31 16:03:17,075 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 123 selfloop transitions, 69 changer transitions 0/209 dead transitions. [2024-01-31 16:03:17,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 209 transitions, 2414 flow [2024-01-31 16:03:17,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:03:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:03:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-01-31 16:03:17,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561643835616437 [2024-01-31 16:03:17,077 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 1860 flow. Second operand 10 states and 318 transitions. [2024-01-31 16:03:17,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 209 transitions, 2414 flow [2024-01-31 16:03:17,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 209 transitions, 2253 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:17,116 INFO L231 Difference]: Finished difference. Result has 170 places, 162 transitions, 1844 flow [2024-01-31 16:03:17,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1844, PETRI_PLACES=170, PETRI_TRANSITIONS=162} [2024-01-31 16:03:17,117 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 93 predicate places. [2024-01-31 16:03:17,117 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 162 transitions, 1844 flow [2024-01-31 16:03:17,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:17,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:17,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:17,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-01-31 16:03:17,118 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:17,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:17,118 INFO L85 PathProgramCache]: Analyzing trace with hash -149576838, now seen corresponding path program 1 times [2024-01-31 16:03:17,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:17,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813459040] [2024-01-31 16:03:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:17,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:17,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:17,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813459040] [2024-01-31 16:03:17,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813459040] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:17,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:17,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:17,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144935893] [2024-01-31 16:03:17,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:17,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:17,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:17,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:17,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:17,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 162 transitions, 1844 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:17,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:17,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:17,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:17,961 INFO L124 PetriNetUnfolderBase]: 1671/3244 cut-off events. [2024-01-31 16:03:17,961 INFO L125 PetriNetUnfolderBase]: For 16548/16583 co-relation queries the response was YES. [2024-01-31 16:03:17,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12598 conditions, 3244 events. 1671/3244 cut-off events. For 16548/16583 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21269 event pairs, 531 based on Foata normal form. 44/3098 useless extension candidates. Maximal degree in co-relation 12529. Up to 1678 conditions per place. [2024-01-31 16:03:17,985 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 118 selfloop transitions, 80 changer transitions 0/215 dead transitions. [2024-01-31 16:03:17,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 215 transitions, 2453 flow [2024-01-31 16:03:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:03:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:03:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2024-01-31 16:03:17,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438356164383562 [2024-01-31 16:03:17,987 INFO L175 Difference]: Start difference. First operand has 170 places, 162 transitions, 1844 flow. Second operand 10 states and 324 transitions. [2024-01-31 16:03:17,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 215 transitions, 2453 flow [2024-01-31 16:03:18,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 215 transitions, 2325 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:03:18,023 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 1924 flow [2024-01-31 16:03:18,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1924, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2024-01-31 16:03:18,023 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 96 predicate places. [2024-01-31 16:03:18,024 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 1924 flow [2024-01-31 16:03:18,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:18,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:18,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:18,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-01-31 16:03:18,024 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:18,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:18,024 INFO L85 PathProgramCache]: Analyzing trace with hash 696897129, now seen corresponding path program 1 times [2024-01-31 16:03:18,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:18,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571389681] [2024-01-31 16:03:18,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:18,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:18,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:18,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571389681] [2024-01-31 16:03:18,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571389681] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:18,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:18,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144617103] [2024-01-31 16:03:18,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:18,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:18,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 1924 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:18,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:18,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:18,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:18,744 INFO L124 PetriNetUnfolderBase]: 1689/3248 cut-off events. [2024-01-31 16:03:18,744 INFO L125 PetriNetUnfolderBase]: For 17456/17509 co-relation queries the response was YES. [2024-01-31 16:03:18,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13258 conditions, 3248 events. 1689/3248 cut-off events. For 17456/17509 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21262 event pairs, 703 based on Foata normal form. 36/3094 useless extension candidates. Maximal degree in co-relation 13187. Up to 2478 conditions per place. [2024-01-31 16:03:18,767 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 156 selfloop transitions, 27 changer transitions 0/200 dead transitions. [2024-01-31 16:03:18,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 200 transitions, 2436 flow [2024-01-31 16:03:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-01-31 16:03:18,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2024-01-31 16:03:18,769 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 1924 flow. Second operand 7 states and 227 transitions. [2024-01-31 16:03:18,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 200 transitions, 2436 flow [2024-01-31 16:03:18,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 200 transitions, 2298 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:03:18,805 INFO L231 Difference]: Finished difference. Result has 174 places, 174 transitions, 1900 flow [2024-01-31 16:03:18,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1900, PETRI_PLACES=174, PETRI_TRANSITIONS=174} [2024-01-31 16:03:18,805 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 97 predicate places. [2024-01-31 16:03:18,806 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 174 transitions, 1900 flow [2024-01-31 16:03:18,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:18,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:18,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:18,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-01-31 16:03:18,806 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:18,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:18,807 INFO L85 PathProgramCache]: Analyzing trace with hash 696892479, now seen corresponding path program 2 times [2024-01-31 16:03:18,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:18,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743512427] [2024-01-31 16:03:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:18,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:18,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:18,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743512427] [2024-01-31 16:03:18,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743512427] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:18,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:18,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294940518] [2024-01-31 16:03:18,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:18,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:18,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:18,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:18,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:19,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:19,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 174 transitions, 1900 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:19,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:19,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:19,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:19,526 INFO L124 PetriNetUnfolderBase]: 1683/3238 cut-off events. [2024-01-31 16:03:19,526 INFO L125 PetriNetUnfolderBase]: For 16341/16394 co-relation queries the response was YES. [2024-01-31 16:03:19,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13066 conditions, 3238 events. 1683/3238 cut-off events. For 16341/16394 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21263 event pairs, 690 based on Foata normal form. 36/3084 useless extension candidates. Maximal degree in co-relation 12993. Up to 2478 conditions per place. [2024-01-31 16:03:19,554 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 155 selfloop transitions, 28 changer transitions 0/200 dead transitions. [2024-01-31 16:03:19,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 200 transitions, 2368 flow [2024-01-31 16:03:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-01-31 16:03:19,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2024-01-31 16:03:19,556 INFO L175 Difference]: Start difference. First operand has 174 places, 174 transitions, 1900 flow. Second operand 7 states and 227 transitions. [2024-01-31 16:03:19,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 200 transitions, 2368 flow [2024-01-31 16:03:19,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 200 transitions, 2330 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:19,593 INFO L231 Difference]: Finished difference. Result has 178 places, 174 transitions, 1923 flow [2024-01-31 16:03:19,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1923, PETRI_PLACES=178, PETRI_TRANSITIONS=174} [2024-01-31 16:03:19,593 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 101 predicate places. [2024-01-31 16:03:19,593 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 174 transitions, 1923 flow [2024-01-31 16:03:19,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:19,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:19,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:19,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-01-31 16:03:19,594 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:19,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:19,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1352345222, now seen corresponding path program 2 times [2024-01-31 16:03:19,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:19,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417987268] [2024-01-31 16:03:19,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:19,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:19,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417987268] [2024-01-31 16:03:19,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417987268] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:19,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:19,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:19,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450820195] [2024-01-31 16:03:19,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:19,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:19,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:19,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:19,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:19,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:19,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 174 transitions, 1923 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:19,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:19,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:19,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:20,664 INFO L124 PetriNetUnfolderBase]: 2241/4159 cut-off events. [2024-01-31 16:03:20,665 INFO L125 PetriNetUnfolderBase]: For 19960/20172 co-relation queries the response was YES. [2024-01-31 16:03:20,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16708 conditions, 4159 events. 2241/4159 cut-off events. For 19960/20172 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 27497 event pairs, 826 based on Foata normal form. 93/4010 useless extension candidates. Maximal degree in co-relation 16634. Up to 2887 conditions per place. [2024-01-31 16:03:20,694 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 151 selfloop transitions, 51 changer transitions 0/223 dead transitions. [2024-01-31 16:03:20,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 223 transitions, 2567 flow [2024-01-31 16:03:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:03:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:03:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 313 transitions. [2024-01-31 16:03:20,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42876712328767125 [2024-01-31 16:03:20,696 INFO L175 Difference]: Start difference. First operand has 178 places, 174 transitions, 1923 flow. Second operand 10 states and 313 transitions. [2024-01-31 16:03:20,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 223 transitions, 2567 flow [2024-01-31 16:03:20,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 223 transitions, 2509 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:20,737 INFO L231 Difference]: Finished difference. Result has 184 places, 180 transitions, 2050 flow [2024-01-31 16:03:20,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2050, PETRI_PLACES=184, PETRI_TRANSITIONS=180} [2024-01-31 16:03:20,737 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 107 predicate places. [2024-01-31 16:03:20,737 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 180 transitions, 2050 flow [2024-01-31 16:03:20,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:20,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:20,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:20,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-01-31 16:03:20,738 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:20,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:20,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1151486530, now seen corresponding path program 2 times [2024-01-31 16:03:20,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:20,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36037963] [2024-01-31 16:03:20,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:20,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:20,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:20,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36037963] [2024-01-31 16:03:20,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36037963] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:20,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:20,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:20,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837744356] [2024-01-31 16:03:20,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:20,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:20,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:20,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:21,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:21,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 180 transitions, 2050 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:21,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:21,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:21,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:21,745 INFO L124 PetriNetUnfolderBase]: 1903/3631 cut-off events. [2024-01-31 16:03:21,745 INFO L125 PetriNetUnfolderBase]: For 20278/20331 co-relation queries the response was YES. [2024-01-31 16:03:21,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15234 conditions, 3631 events. 1903/3631 cut-off events. For 20278/20331 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 24468 event pairs, 720 based on Foata normal form. 68/3509 useless extension candidates. Maximal degree in co-relation 15158. Up to 1908 conditions per place. [2024-01-31 16:03:21,777 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 120 selfloop transitions, 75 changer transitions 0/212 dead transitions. [2024-01-31 16:03:21,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 212 transitions, 2605 flow [2024-01-31 16:03:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-01-31 16:03:21,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-01-31 16:03:21,778 INFO L175 Difference]: Start difference. First operand has 184 places, 180 transitions, 2050 flow. Second operand 8 states and 259 transitions. [2024-01-31 16:03:21,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 212 transitions, 2605 flow [2024-01-31 16:03:21,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 212 transitions, 2516 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-31 16:03:21,824 INFO L231 Difference]: Finished difference. Result has 185 places, 180 transitions, 2125 flow [2024-01-31 16:03:21,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2125, PETRI_PLACES=185, PETRI_TRANSITIONS=180} [2024-01-31 16:03:21,824 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 108 predicate places. [2024-01-31 16:03:21,824 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 180 transitions, 2125 flow [2024-01-31 16:03:21,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:21,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:21,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:21,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-01-31 16:03:21,825 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:21,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:21,825 INFO L85 PathProgramCache]: Analyzing trace with hash -978584176, now seen corresponding path program 3 times [2024-01-31 16:03:21,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:21,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362591637] [2024-01-31 16:03:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:21,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:22,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:22,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362591637] [2024-01-31 16:03:22,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362591637] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:22,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:22,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443947707] [2024-01-31 16:03:22,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:22,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:22,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:22,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:22,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:22,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 180 transitions, 2125 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:22,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:22,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:22,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:22,850 INFO L124 PetriNetUnfolderBase]: 2057/3855 cut-off events. [2024-01-31 16:03:22,851 INFO L125 PetriNetUnfolderBase]: For 24116/24325 co-relation queries the response was YES. [2024-01-31 16:03:22,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16425 conditions, 3855 events. 2057/3855 cut-off events. For 24116/24325 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 25250 event pairs, 766 based on Foata normal form. 120/3739 useless extension candidates. Maximal degree in co-relation 16348. Up to 2773 conditions per place. [2024-01-31 16:03:22,879 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 152 selfloop transitions, 51 changer transitions 0/224 dead transitions. [2024-01-31 16:03:22,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 224 transitions, 2701 flow [2024-01-31 16:03:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:03:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:03:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 336 transitions. [2024-01-31 16:03:22,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843088418430885 [2024-01-31 16:03:22,881 INFO L175 Difference]: Start difference. First operand has 185 places, 180 transitions, 2125 flow. Second operand 11 states and 336 transitions. [2024-01-31 16:03:22,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 224 transitions, 2701 flow [2024-01-31 16:03:22,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 224 transitions, 2547 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-01-31 16:03:22,932 INFO L231 Difference]: Finished difference. Result has 189 places, 180 transitions, 2083 flow [2024-01-31 16:03:22,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2083, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2024-01-31 16:03:22,933 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 112 predicate places. [2024-01-31 16:03:22,933 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 2083 flow [2024-01-31 16:03:22,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:22,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:22,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:22,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-01-31 16:03:22,934 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:22,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:22,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1152143110, now seen corresponding path program 3 times [2024-01-31 16:03:22,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:22,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77922335] [2024-01-31 16:03:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:23,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:23,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77922335] [2024-01-31 16:03:23,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77922335] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:23,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:23,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:23,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474042552] [2024-01-31 16:03:23,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:23,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:23,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:23,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:23,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:23,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:23,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 2083 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:23,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:23,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:23,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:23,815 INFO L124 PetriNetUnfolderBase]: 1673/3263 cut-off events. [2024-01-31 16:03:23,816 INFO L125 PetriNetUnfolderBase]: For 20188/20241 co-relation queries the response was YES. [2024-01-31 16:03:23,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13710 conditions, 3263 events. 1673/3263 cut-off events. For 20188/20241 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21611 event pairs, 630 based on Foata normal form. 104/3177 useless extension candidates. Maximal degree in co-relation 13632. Up to 1872 conditions per place. [2024-01-31 16:03:23,843 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 121 selfloop transitions, 75 changer transitions 0/213 dead transitions. [2024-01-31 16:03:23,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 213 transitions, 2642 flow [2024-01-31 16:03:23,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:03:23,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:03:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 282 transitions. [2024-01-31 16:03:23,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292237442922374 [2024-01-31 16:03:23,844 INFO L175 Difference]: Start difference. First operand has 189 places, 180 transitions, 2083 flow. Second operand 9 states and 282 transitions. [2024-01-31 16:03:23,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 213 transitions, 2642 flow [2024-01-31 16:03:23,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 213 transitions, 2535 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-31 16:03:23,889 INFO L231 Difference]: Finished difference. Result has 188 places, 180 transitions, 2144 flow [2024-01-31 16:03:23,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2144, PETRI_PLACES=188, PETRI_TRANSITIONS=180} [2024-01-31 16:03:23,890 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 111 predicate places. [2024-01-31 16:03:23,890 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 180 transitions, 2144 flow [2024-01-31 16:03:23,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:23,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:23,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:23,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-01-31 16:03:23,890 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:23,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1833185391, now seen corresponding path program 3 times [2024-01-31 16:03:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205958007] [2024-01-31 16:03:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:24,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:24,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205958007] [2024-01-31 16:03:24,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205958007] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:24,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:24,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781364934] [2024-01-31 16:03:24,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:24,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:24,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:24,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:24,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:24,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:24,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 180 transitions, 2144 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:24,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:24,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:24,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:24,608 INFO L124 PetriNetUnfolderBase]: 1667/3221 cut-off events. [2024-01-31 16:03:24,609 INFO L125 PetriNetUnfolderBase]: For 21285/21345 co-relation queries the response was YES. [2024-01-31 16:03:24,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13897 conditions, 3221 events. 1667/3221 cut-off events. For 21285/21345 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21268 event pairs, 733 based on Foata normal form. 38/3069 useless extension candidates. Maximal degree in co-relation 13818. Up to 2462 conditions per place. [2024-01-31 16:03:24,639 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 157 selfloop transitions, 32 changer transitions 0/206 dead transitions. [2024-01-31 16:03:24,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 206 transitions, 2636 flow [2024-01-31 16:03:24,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-01-31 16:03:24,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-01-31 16:03:24,641 INFO L175 Difference]: Start difference. First operand has 188 places, 180 transitions, 2144 flow. Second operand 7 states and 224 transitions. [2024-01-31 16:03:24,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 206 transitions, 2636 flow [2024-01-31 16:03:24,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 206 transitions, 2482 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:03:24,687 INFO L231 Difference]: Finished difference. Result has 188 places, 186 transitions, 2125 flow [2024-01-31 16:03:24,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2125, PETRI_PLACES=188, PETRI_TRANSITIONS=186} [2024-01-31 16:03:24,688 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 111 predicate places. [2024-01-31 16:03:24,688 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 186 transitions, 2125 flow [2024-01-31 16:03:24,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:24,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:24,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:24,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-01-31 16:03:24,688 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:24,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash 166533436, now seen corresponding path program 4 times [2024-01-31 16:03:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:24,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791494765] [2024-01-31 16:03:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:24,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:24,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791494765] [2024-01-31 16:03:24,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791494765] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:24,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:24,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:24,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386317800] [2024-01-31 16:03:24,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:24,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:24,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:24,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:24,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:24,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 186 transitions, 2125 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:24,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:24,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:24,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:25,811 INFO L124 PetriNetUnfolderBase]: 2064/3871 cut-off events. [2024-01-31 16:03:25,811 INFO L125 PetriNetUnfolderBase]: For 22419/22659 co-relation queries the response was YES. [2024-01-31 16:03:25,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16584 conditions, 3871 events. 2064/3871 cut-off events. For 22419/22659 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 25491 event pairs, 697 based on Foata normal form. 106/3730 useless extension candidates. Maximal degree in co-relation 16503. Up to 2841 conditions per place. [2024-01-31 16:03:25,839 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 174 selfloop transitions, 43 changer transitions 0/240 dead transitions. [2024-01-31 16:03:25,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 240 transitions, 2833 flow [2024-01-31 16:03:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:03:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:03:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 337 transitions. [2024-01-31 16:03:25,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41967621419676215 [2024-01-31 16:03:25,841 INFO L175 Difference]: Start difference. First operand has 188 places, 186 transitions, 2125 flow. Second operand 11 states and 337 transitions. [2024-01-31 16:03:25,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 240 transitions, 2833 flow [2024-01-31 16:03:25,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 240 transitions, 2799 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:25,895 INFO L231 Difference]: Finished difference. Result has 198 places, 192 transitions, 2273 flow [2024-01-31 16:03:25,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2273, PETRI_PLACES=198, PETRI_TRANSITIONS=192} [2024-01-31 16:03:25,896 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 121 predicate places. [2024-01-31 16:03:25,896 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 192 transitions, 2273 flow [2024-01-31 16:03:25,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:25,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:25,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:25,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-01-31 16:03:25,897 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:25,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:25,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1831307666, now seen corresponding path program 5 times [2024-01-31 16:03:25,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:25,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673270987] [2024-01-31 16:03:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:25,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:26,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:26,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673270987] [2024-01-31 16:03:26,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673270987] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:26,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:26,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731046841] [2024-01-31 16:03:26,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:26,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:26,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:26,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:26,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 192 transitions, 2273 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:26,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:26,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:26,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:26,902 INFO L124 PetriNetUnfolderBase]: 2132/3998 cut-off events. [2024-01-31 16:03:26,902 INFO L125 PetriNetUnfolderBase]: For 26044/26282 co-relation queries the response was YES. [2024-01-31 16:03:26,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17428 conditions, 3998 events. 2132/3998 cut-off events. For 26044/26282 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 26517 event pairs, 683 based on Foata normal form. 123/3876 useless extension candidates. Maximal degree in co-relation 17344. Up to 2441 conditions per place. [2024-01-31 16:03:26,937 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 152 selfloop transitions, 69 changer transitions 0/244 dead transitions. [2024-01-31 16:03:26,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 244 transitions, 2967 flow [2024-01-31 16:03:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:03:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:03:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-01-31 16:03:26,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43424657534246575 [2024-01-31 16:03:26,938 INFO L175 Difference]: Start difference. First operand has 198 places, 192 transitions, 2273 flow. Second operand 10 states and 317 transitions. [2024-01-31 16:03:26,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 244 transitions, 2967 flow [2024-01-31 16:03:27,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 244 transitions, 2877 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-01-31 16:03:27,003 INFO L231 Difference]: Finished difference. Result has 200 places, 194 transitions, 2342 flow [2024-01-31 16:03:27,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2342, PETRI_PLACES=200, PETRI_TRANSITIONS=194} [2024-01-31 16:03:27,004 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 123 predicate places. [2024-01-31 16:03:27,004 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 194 transitions, 2342 flow [2024-01-31 16:03:27,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:27,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:27,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:27,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-01-31 16:03:27,005 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:27,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash 450213006, now seen corresponding path program 6 times [2024-01-31 16:03:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920340400] [2024-01-31 16:03:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:27,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:27,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920340400] [2024-01-31 16:03:27,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920340400] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:27,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:27,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568853516] [2024-01-31 16:03:27,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:27,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:27,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:27,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 194 transitions, 2342 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:27,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:27,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:27,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:28,014 INFO L124 PetriNetUnfolderBase]: 2100/3925 cut-off events. [2024-01-31 16:03:28,014 INFO L125 PetriNetUnfolderBase]: For 27380/27628 co-relation queries the response was YES. [2024-01-31 16:03:28,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17370 conditions, 3925 events. 2100/3925 cut-off events. For 27380/27628 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25880 event pairs, 721 based on Foata normal form. 118/3796 useless extension candidates. Maximal degree in co-relation 17285. Up to 2957 conditions per place. [2024-01-31 16:03:28,049 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 171 selfloop transitions, 43 changer transitions 0/237 dead transitions. [2024-01-31 16:03:28,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 237 transitions, 2934 flow [2024-01-31 16:03:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:03:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:03:28,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-01-31 16:03:28,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-01-31 16:03:28,050 INFO L175 Difference]: Start difference. First operand has 200 places, 194 transitions, 2342 flow. Second operand 10 states and 310 transitions. [2024-01-31 16:03:28,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 237 transitions, 2934 flow [2024-01-31 16:03:28,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 237 transitions, 2793 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-01-31 16:03:28,110 INFO L231 Difference]: Finished difference. Result has 202 places, 194 transitions, 2297 flow [2024-01-31 16:03:28,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2297, PETRI_PLACES=202, PETRI_TRANSITIONS=194} [2024-01-31 16:03:28,111 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 125 predicate places. [2024-01-31 16:03:28,111 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 2297 flow [2024-01-31 16:03:28,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:28,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:28,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:28,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-01-31 16:03:28,112 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:28,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:28,112 INFO L85 PathProgramCache]: Analyzing trace with hash 995958211, now seen corresponding path program 1 times [2024-01-31 16:03:28,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:28,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907923969] [2024-01-31 16:03:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:28,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:28,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907923969] [2024-01-31 16:03:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907923969] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:28,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:28,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:28,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303487853] [2024-01-31 16:03:28,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:28,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:28,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:28,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:28,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 2297 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:28,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:28,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:28,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:28,914 INFO L124 PetriNetUnfolderBase]: 2077/3928 cut-off events. [2024-01-31 16:03:28,914 INFO L125 PetriNetUnfolderBase]: For 26450/26669 co-relation queries the response was YES. [2024-01-31 16:03:28,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17131 conditions, 3928 events. 2077/3928 cut-off events. For 26450/26669 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26245 event pairs, 803 based on Foata normal form. 87/3763 useless extension candidates. Maximal degree in co-relation 17045. Up to 3112 conditions per place. [2024-01-31 16:03:29,007 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 169 selfloop transitions, 38 changer transitions 0/230 dead transitions. [2024-01-31 16:03:29,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 230 transitions, 2910 flow [2024-01-31 16:03:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-01-31 16:03:29,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2024-01-31 16:03:29,008 INFO L175 Difference]: Start difference. First operand has 202 places, 194 transitions, 2297 flow. Second operand 8 states and 251 transitions. [2024-01-31 16:03:29,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 230 transitions, 2910 flow [2024-01-31 16:03:29,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 230 transitions, 2820 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:03:29,071 INFO L231 Difference]: Finished difference. Result has 202 places, 207 transitions, 2422 flow [2024-01-31 16:03:29,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2422, PETRI_PLACES=202, PETRI_TRANSITIONS=207} [2024-01-31 16:03:29,071 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 125 predicate places. [2024-01-31 16:03:29,071 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 207 transitions, 2422 flow [2024-01-31 16:03:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:29,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:29,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:29,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-01-31 16:03:29,072 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:29,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash 968285070, now seen corresponding path program 4 times [2024-01-31 16:03:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:29,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150500994] [2024-01-31 16:03:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:29,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:29,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150500994] [2024-01-31 16:03:29,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150500994] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:29,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:29,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:29,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157001146] [2024-01-31 16:03:29,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:29,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:29,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:29,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:29,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:29,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:29,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 207 transitions, 2422 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:29,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:29,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:29,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:29,991 INFO L124 PetriNetUnfolderBase]: 1798/3452 cut-off events. [2024-01-31 16:03:29,991 INFO L125 PetriNetUnfolderBase]: For 24206/24255 co-relation queries the response was YES. [2024-01-31 16:03:30,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15114 conditions, 3452 events. 1798/3452 cut-off events. For 24206/24255 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 23021 event pairs, 630 based on Foata normal form. 65/3337 useless extension candidates. Maximal degree in co-relation 15026. Up to 1651 conditions per place. [2024-01-31 16:03:30,029 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 130 selfloop transitions, 93 changer transitions 0/244 dead transitions. [2024-01-31 16:03:30,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 244 transitions, 3067 flow [2024-01-31 16:03:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:03:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:03:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-01-31 16:03:30,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-01-31 16:03:30,031 INFO L175 Difference]: Start difference. First operand has 202 places, 207 transitions, 2422 flow. Second operand 10 states and 310 transitions. [2024-01-31 16:03:30,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 244 transitions, 3067 flow [2024-01-31 16:03:30,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 244 transitions, 3026 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:30,095 INFO L231 Difference]: Finished difference. Result has 210 places, 207 transitions, 2578 flow [2024-01-31 16:03:30,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2578, PETRI_PLACES=210, PETRI_TRANSITIONS=207} [2024-01-31 16:03:30,095 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 133 predicate places. [2024-01-31 16:03:30,095 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 207 transitions, 2578 flow [2024-01-31 16:03:30,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:30,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:30,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:30,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-01-31 16:03:30,096 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:30,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:30,097 INFO L85 PathProgramCache]: Analyzing trace with hash -88034848, now seen corresponding path program 7 times [2024-01-31 16:03:30,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:30,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553759494] [2024-01-31 16:03:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:30,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:30,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:30,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553759494] [2024-01-31 16:03:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553759494] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:30,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:30,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:30,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11027583] [2024-01-31 16:03:30,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:30,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:30,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:30,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 207 transitions, 2578 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:30,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:30,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:30,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:31,115 INFO L124 PetriNetUnfolderBase]: 2017/3789 cut-off events. [2024-01-31 16:03:31,115 INFO L125 PetriNetUnfolderBase]: For 27909/28145 co-relation queries the response was YES. [2024-01-31 16:03:31,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17096 conditions, 3789 events. 2017/3789 cut-off events. For 27909/28145 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 24923 event pairs, 515 based on Foata normal form. 97/3652 useless extension candidates. Maximal degree in co-relation 17006. Up to 1859 conditions per place. [2024-01-31 16:03:31,151 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 132 selfloop transitions, 97 changer transitions 0/252 dead transitions. [2024-01-31 16:03:31,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 252 transitions, 3268 flow [2024-01-31 16:03:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:03:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:03:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2024-01-31 16:03:31,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490106544901065 [2024-01-31 16:03:31,152 INFO L175 Difference]: Start difference. First operand has 210 places, 207 transitions, 2578 flow. Second operand 9 states and 295 transitions. [2024-01-31 16:03:31,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 252 transitions, 3268 flow [2024-01-31 16:03:31,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 252 transitions, 3078 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:03:31,224 INFO L231 Difference]: Finished difference. Result has 210 places, 209 transitions, 2612 flow [2024-01-31 16:03:31,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2612, PETRI_PLACES=210, PETRI_TRANSITIONS=209} [2024-01-31 16:03:31,224 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 133 predicate places. [2024-01-31 16:03:31,224 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 209 transitions, 2612 flow [2024-01-31 16:03:31,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:31,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:31,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:31,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-01-31 16:03:31,225 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:31,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:31,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1041594606, now seen corresponding path program 8 times [2024-01-31 16:03:31,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:31,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941962249] [2024-01-31 16:03:31,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:31,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:31,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941962249] [2024-01-31 16:03:31,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941962249] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:31,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:31,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:31,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769170995] [2024-01-31 16:03:31,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:31,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:31,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:31,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:31,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:31,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:31,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 209 transitions, 2612 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:31,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:31,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:31,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:32,240 INFO L124 PetriNetUnfolderBase]: 1997/3784 cut-off events. [2024-01-31 16:03:32,240 INFO L125 PetriNetUnfolderBase]: For 28525/28765 co-relation queries the response was YES. [2024-01-31 16:03:32,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17027 conditions, 3784 events. 1997/3784 cut-off events. For 28525/28765 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 24906 event pairs, 562 based on Foata normal form. 84/3639 useless extension candidates. Maximal degree in co-relation 16936. Up to 2172 conditions per place. [2024-01-31 16:03:32,278 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 141 selfloop transitions, 81 changer transitions 0/245 dead transitions. [2024-01-31 16:03:32,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 245 transitions, 3205 flow [2024-01-31 16:03:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:03:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:03:32,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 286 transitions. [2024-01-31 16:03:32,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353120243531202 [2024-01-31 16:03:32,279 INFO L175 Difference]: Start difference. First operand has 210 places, 209 transitions, 2612 flow. Second operand 9 states and 286 transitions. [2024-01-31 16:03:32,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 245 transitions, 3205 flow [2024-01-31 16:03:32,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 245 transitions, 3045 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:32,347 INFO L231 Difference]: Finished difference. Result has 213 places, 209 transitions, 2630 flow [2024-01-31 16:03:32,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2630, PETRI_PLACES=213, PETRI_TRANSITIONS=209} [2024-01-31 16:03:32,348 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 136 predicate places. [2024-01-31 16:03:32,349 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 209 transitions, 2630 flow [2024-01-31 16:03:32,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:32,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:32,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:32,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-01-31 16:03:32,349 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:32,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:32,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1887906272, now seen corresponding path program 9 times [2024-01-31 16:03:32,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:32,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511576395] [2024-01-31 16:03:32,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:32,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:32,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511576395] [2024-01-31 16:03:32,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511576395] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:32,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:32,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:32,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115688346] [2024-01-31 16:03:32,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:32,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:32,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:32,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:32,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:32,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:32,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 209 transitions, 2630 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:32,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:32,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:32,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:33,456 INFO L124 PetriNetUnfolderBase]: 1953/3710 cut-off events. [2024-01-31 16:03:33,456 INFO L125 PetriNetUnfolderBase]: For 30098/30334 co-relation queries the response was YES. [2024-01-31 16:03:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16485 conditions, 3710 events. 1953/3710 cut-off events. For 30098/30334 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 24374 event pairs, 556 based on Foata normal form. 96/3577 useless extension candidates. Maximal degree in co-relation 16393. Up to 2160 conditions per place. [2024-01-31 16:03:33,489 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 136 selfloop transitions, 81 changer transitions 0/240 dead transitions. [2024-01-31 16:03:33,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 240 transitions, 3157 flow [2024-01-31 16:03:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-01-31 16:03:33,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-01-31 16:03:33,490 INFO L175 Difference]: Start difference. First operand has 213 places, 209 transitions, 2630 flow. Second operand 8 states and 259 transitions. [2024-01-31 16:03:33,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 240 transitions, 3157 flow [2024-01-31 16:03:33,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 240 transitions, 2983 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-31 16:03:33,557 INFO L231 Difference]: Finished difference. Result has 213 places, 209 transitions, 2640 flow [2024-01-31 16:03:33,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2640, PETRI_PLACES=213, PETRI_TRANSITIONS=209} [2024-01-31 16:03:33,558 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 136 predicate places. [2024-01-31 16:03:33,558 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 209 transitions, 2640 flow [2024-01-31 16:03:33,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:33,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:33,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:33,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-01-31 16:03:33,558 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:33,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1861315819, now seen corresponding path program 2 times [2024-01-31 16:03:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:33,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832342464] [2024-01-31 16:03:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:33,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:33,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832342464] [2024-01-31 16:03:33,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832342464] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:33,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:33,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:33,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287334376] [2024-01-31 16:03:33,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:33,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:33,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:33,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:33,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:33,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:33,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 209 transitions, 2640 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:33,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:33,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:33,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:34,377 INFO L124 PetriNetUnfolderBase]: 1959/3720 cut-off events. [2024-01-31 16:03:34,378 INFO L125 PetriNetUnfolderBase]: For 28422/28653 co-relation queries the response was YES. [2024-01-31 16:03:34,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16570 conditions, 3720 events. 1959/3720 cut-off events. For 28422/28653 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 24577 event pairs, 747 based on Foata normal form. 83/3555 useless extension candidates. Maximal degree in co-relation 16477. Up to 2914 conditions per place. [2024-01-31 16:03:34,421 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 169 selfloop transitions, 42 changer transitions 0/234 dead transitions. [2024-01-31 16:03:34,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 234 transitions, 3165 flow [2024-01-31 16:03:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:34,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:34,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-01-31 16:03:34,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227005870841485 [2024-01-31 16:03:34,422 INFO L175 Difference]: Start difference. First operand has 213 places, 209 transitions, 2640 flow. Second operand 7 states and 226 transitions. [2024-01-31 16:03:34,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 234 transitions, 3165 flow [2024-01-31 16:03:34,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 234 transitions, 2967 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-01-31 16:03:34,491 INFO L231 Difference]: Finished difference. Result has 210 places, 212 transitions, 2554 flow [2024-01-31 16:03:34,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2442, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2554, PETRI_PLACES=210, PETRI_TRANSITIONS=212} [2024-01-31 16:03:34,492 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 133 predicate places. [2024-01-31 16:03:34,492 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 212 transitions, 2554 flow [2024-01-31 16:03:34,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:34,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:34,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:34,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-01-31 16:03:34,492 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:34,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:34,492 INFO L85 PathProgramCache]: Analyzing trace with hash -274114362, now seen corresponding path program 10 times [2024-01-31 16:03:34,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:34,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524080671] [2024-01-31 16:03:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:34,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:34,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:34,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524080671] [2024-01-31 16:03:34,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524080671] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:34,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:34,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:34,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136847235] [2024-01-31 16:03:34,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:34,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:34,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:34,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:34,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 212 transitions, 2554 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:34,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:34,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:34,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:35,422 INFO L124 PetriNetUnfolderBase]: 2065/3835 cut-off events. [2024-01-31 16:03:35,423 INFO L125 PetriNetUnfolderBase]: For 25027/25274 co-relation queries the response was YES. [2024-01-31 16:03:35,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16716 conditions, 3835 events. 2065/3835 cut-off events. For 25027/25274 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 24950 event pairs, 501 based on Foata normal form. 115/3719 useless extension candidates. Maximal degree in co-relation 16624. Up to 1926 conditions per place. [2024-01-31 16:03:35,455 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 130 selfloop transitions, 107 changer transitions 0/260 dead transitions. [2024-01-31 16:03:35,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 260 transitions, 3236 flow [2024-01-31 16:03:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:03:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:03:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-01-31 16:03:35,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328767123287671 [2024-01-31 16:03:35,456 INFO L175 Difference]: Start difference. First operand has 210 places, 212 transitions, 2554 flow. Second operand 10 states and 316 transitions. [2024-01-31 16:03:35,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 260 transitions, 3236 flow [2024-01-31 16:03:35,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 260 transitions, 3173 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:35,520 INFO L231 Difference]: Finished difference. Result has 217 places, 221 transitions, 2815 flow [2024-01-31 16:03:35,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2815, PETRI_PLACES=217, PETRI_TRANSITIONS=221} [2024-01-31 16:03:35,521 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 140 predicate places. [2024-01-31 16:03:35,521 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 221 transitions, 2815 flow [2024-01-31 16:03:35,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:35,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:35,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:35,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-01-31 16:03:35,522 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:35,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:35,522 INFO L85 PathProgramCache]: Analyzing trace with hash 670526463, now seen corresponding path program 3 times [2024-01-31 16:03:35,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:35,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274208384] [2024-01-31 16:03:35,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:35,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:35,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:35,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274208384] [2024-01-31 16:03:35,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274208384] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:35,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:35,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:35,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136096747] [2024-01-31 16:03:35,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:35,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:35,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:35,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:35,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:35,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:35,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 221 transitions, 2815 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:35,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:35,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:35,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:36,326 INFO L124 PetriNetUnfolderBase]: 2035/3813 cut-off events. [2024-01-31 16:03:36,326 INFO L125 PetriNetUnfolderBase]: For 28185/28428 co-relation queries the response was YES. [2024-01-31 16:03:36,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17647 conditions, 3813 events. 2035/3813 cut-off events. For 28185/28428 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 25142 event pairs, 711 based on Foata normal form. 80/3656 useless extension candidates. Maximal degree in co-relation 17554. Up to 3030 conditions per place. [2024-01-31 16:03:36,370 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 178 selfloop transitions, 42 changer transitions 0/243 dead transitions. [2024-01-31 16:03:36,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 243 transitions, 3346 flow [2024-01-31 16:03:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:36,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-01-31 16:03:36,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436399217221135 [2024-01-31 16:03:36,371 INFO L175 Difference]: Start difference. First operand has 217 places, 221 transitions, 2815 flow. Second operand 7 states and 223 transitions. [2024-01-31 16:03:36,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 243 transitions, 3346 flow [2024-01-31 16:03:36,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 243 transitions, 3160 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-31 16:03:36,437 INFO L231 Difference]: Finished difference. Result has 216 places, 223 transitions, 2733 flow [2024-01-31 16:03:36,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2733, PETRI_PLACES=216, PETRI_TRANSITIONS=223} [2024-01-31 16:03:36,438 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 139 predicate places. [2024-01-31 16:03:36,438 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 223 transitions, 2733 flow [2024-01-31 16:03:36,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:36,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:36,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:36,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-01-31 16:03:36,439 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:36,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash 671600613, now seen corresponding path program 4 times [2024-01-31 16:03:36,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:36,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864435082] [2024-01-31 16:03:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:36,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:36,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:36,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864435082] [2024-01-31 16:03:36,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864435082] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:36,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:36,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14594199] [2024-01-31 16:03:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:36,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:36,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:36,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:36,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:36,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 223 transitions, 2733 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:36,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:36,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:36,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:37,289 INFO L124 PetriNetUnfolderBase]: 2029/3803 cut-off events. [2024-01-31 16:03:37,289 INFO L125 PetriNetUnfolderBase]: For 25376/25619 co-relation queries the response was YES. [2024-01-31 16:03:37,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17090 conditions, 3803 events. 2029/3803 cut-off events. For 25376/25619 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 25098 event pairs, 713 based on Foata normal form. 76/3642 useless extension candidates. Maximal degree in co-relation 16997. Up to 3030 conditions per place. [2024-01-31 16:03:37,344 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 174 selfloop transitions, 44 changer transitions 0/241 dead transitions. [2024-01-31 16:03:37,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 241 transitions, 3232 flow [2024-01-31 16:03:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-01-31 16:03:37,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-01-31 16:03:37,346 INFO L175 Difference]: Start difference. First operand has 216 places, 223 transitions, 2733 flow. Second operand 7 states and 221 transitions. [2024-01-31 16:03:37,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 241 transitions, 3232 flow [2024-01-31 16:03:37,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 241 transitions, 3173 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:37,416 INFO L231 Difference]: Finished difference. Result has 220 places, 223 transitions, 2767 flow [2024-01-31 16:03:37,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2767, PETRI_PLACES=220, PETRI_TRANSITIONS=223} [2024-01-31 16:03:37,416 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 143 predicate places. [2024-01-31 16:03:37,416 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 223 transitions, 2767 flow [2024-01-31 16:03:37,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:37,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:37,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:37,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-01-31 16:03:37,417 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:37,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:37,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1188406002, now seen corresponding path program 1 times [2024-01-31 16:03:37,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:37,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412410116] [2024-01-31 16:03:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:37,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:37,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:37,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412410116] [2024-01-31 16:03:37,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412410116] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:37,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:37,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:37,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542527975] [2024-01-31 16:03:37,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:37,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:37,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:37,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:37,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 223 transitions, 2767 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:37,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:37,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:37,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:38,293 INFO L124 PetriNetUnfolderBase]: 2020/3822 cut-off events. [2024-01-31 16:03:38,293 INFO L125 PetriNetUnfolderBase]: For 26949/27124 co-relation queries the response was YES. [2024-01-31 16:03:38,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17322 conditions, 3822 events. 2020/3822 cut-off events. For 26949/27124 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 25595 event pairs, 726 based on Foata normal form. 62/3652 useless extension candidates. Maximal degree in co-relation 17228. Up to 3072 conditions per place. [2024-01-31 16:03:38,329 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 184 selfloop transitions, 53 changer transitions 0/260 dead transitions. [2024-01-31 16:03:38,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 260 transitions, 3638 flow [2024-01-31 16:03:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-01-31 16:03:38,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-01-31 16:03:38,331 INFO L175 Difference]: Start difference. First operand has 220 places, 223 transitions, 2767 flow. Second operand 8 states and 245 transitions. [2024-01-31 16:03:38,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 260 transitions, 3638 flow [2024-01-31 16:03:38,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 260 transitions, 3550 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:38,401 INFO L231 Difference]: Finished difference. Result has 224 places, 245 transitions, 3193 flow [2024-01-31 16:03:38,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3193, PETRI_PLACES=224, PETRI_TRANSITIONS=245} [2024-01-31 16:03:38,402 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 147 predicate places. [2024-01-31 16:03:38,402 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 245 transitions, 3193 flow [2024-01-31 16:03:38,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:38,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:38,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:38,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-01-31 16:03:38,402 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:38,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash 811993926, now seen corresponding path program 1 times [2024-01-31 16:03:38,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:38,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529269150] [2024-01-31 16:03:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:38,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:38,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:38,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529269150] [2024-01-31 16:03:38,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529269150] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:38,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:38,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:38,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944665069] [2024-01-31 16:03:38,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:38,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:38,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:38,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:38,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:38,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:38,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 245 transitions, 3193 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:38,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:38,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:38,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:39,143 INFO L124 PetriNetUnfolderBase]: 1564/3144 cut-off events. [2024-01-31 16:03:39,144 INFO L125 PetriNetUnfolderBase]: For 28133/28357 co-relation queries the response was YES. [2024-01-31 16:03:39,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15038 conditions, 3144 events. 1564/3144 cut-off events. For 28133/28357 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21716 event pairs, 472 based on Foata normal form. 87/3019 useless extension candidates. Maximal degree in co-relation 14942. Up to 2305 conditions per place. [2024-01-31 16:03:39,175 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 195 selfloop transitions, 27 changer transitions 0/260 dead transitions. [2024-01-31 16:03:39,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 260 transitions, 3707 flow [2024-01-31 16:03:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 244 transitions. [2024-01-31 16:03:39,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570776255707762 [2024-01-31 16:03:39,176 INFO L175 Difference]: Start difference. First operand has 224 places, 245 transitions, 3193 flow. Second operand 6 states and 244 transitions. [2024-01-31 16:03:39,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 260 transitions, 3707 flow [2024-01-31 16:03:39,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 260 transitions, 3638 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:39,241 INFO L231 Difference]: Finished difference. Result has 228 places, 247 transitions, 3223 flow [2024-01-31 16:03:39,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3223, PETRI_PLACES=228, PETRI_TRANSITIONS=247} [2024-01-31 16:03:39,242 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 151 predicate places. [2024-01-31 16:03:39,242 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 247 transitions, 3223 flow [2024-01-31 16:03:39,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:39,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:39,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:39,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-01-31 16:03:39,243 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:39,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:39,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1401428766, now seen corresponding path program 1 times [2024-01-31 16:03:39,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:39,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174883203] [2024-01-31 16:03:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:39,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:39,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:39,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174883203] [2024-01-31 16:03:39,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174883203] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:39,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:39,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212475335] [2024-01-31 16:03:39,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:39,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:39,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:39,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:39,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:39,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:39,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 247 transitions, 3223 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:39,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:39,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:39,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:39,921 INFO L124 PetriNetUnfolderBase]: 1556/3139 cut-off events. [2024-01-31 16:03:39,921 INFO L125 PetriNetUnfolderBase]: For 28352/28572 co-relation queries the response was YES. [2024-01-31 16:03:39,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15130 conditions, 3139 events. 1556/3139 cut-off events. For 28352/28572 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21705 event pairs, 458 based on Foata normal form. 107/3080 useless extension candidates. Maximal degree in co-relation 15032. Up to 2291 conditions per place. [2024-01-31 16:03:39,954 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 186 selfloop transitions, 36 changer transitions 0/260 dead transitions. [2024-01-31 16:03:39,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 260 transitions, 3734 flow [2024-01-31 16:03:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-01-31 16:03:39,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5502283105022832 [2024-01-31 16:03:39,955 INFO L175 Difference]: Start difference. First operand has 228 places, 247 transitions, 3223 flow. Second operand 6 states and 241 transitions. [2024-01-31 16:03:39,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 260 transitions, 3734 flow [2024-01-31 16:03:40,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 260 transitions, 3654 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:40,017 INFO L231 Difference]: Finished difference. Result has 231 places, 249 transitions, 3264 flow [2024-01-31 16:03:40,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3264, PETRI_PLACES=231, PETRI_TRANSITIONS=249} [2024-01-31 16:03:40,018 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 154 predicate places. [2024-01-31 16:03:40,018 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 249 transitions, 3264 flow [2024-01-31 16:03:40,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:40,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:40,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:40,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-01-31 16:03:40,018 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:40,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:40,019 INFO L85 PathProgramCache]: Analyzing trace with hash 957442728, now seen corresponding path program 1 times [2024-01-31 16:03:40,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:40,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254342867] [2024-01-31 16:03:40,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:40,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:40,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:40,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254342867] [2024-01-31 16:03:40,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254342867] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:40,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:40,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:40,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369026364] [2024-01-31 16:03:40,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:40,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:40,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:40,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:40,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:40,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:40,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 249 transitions, 3264 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:40,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:40,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:40,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:40,772 INFO L124 PetriNetUnfolderBase]: 1585/3188 cut-off events. [2024-01-31 16:03:40,772 INFO L125 PetriNetUnfolderBase]: For 29439/29661 co-relation queries the response was YES. [2024-01-31 16:03:40,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15429 conditions, 3188 events. 1585/3188 cut-off events. For 29439/29661 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22020 event pairs, 423 based on Foata normal form. 92/3107 useless extension candidates. Maximal degree in co-relation 15330. Up to 2023 conditions per place. [2024-01-31 16:03:40,803 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 177 selfloop transitions, 63 changer transitions 0/278 dead transitions. [2024-01-31 16:03:40,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 278 transitions, 3921 flow [2024-01-31 16:03:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 291 transitions. [2024-01-31 16:03:40,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694716242661448 [2024-01-31 16:03:40,804 INFO L175 Difference]: Start difference. First operand has 231 places, 249 transitions, 3264 flow. Second operand 7 states and 291 transitions. [2024-01-31 16:03:40,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 278 transitions, 3921 flow [2024-01-31 16:03:40,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 278 transitions, 3818 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:40,873 INFO L231 Difference]: Finished difference. Result has 235 places, 255 transitions, 3356 flow [2024-01-31 16:03:40,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3161, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3356, PETRI_PLACES=235, PETRI_TRANSITIONS=255} [2024-01-31 16:03:40,874 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 158 predicate places. [2024-01-31 16:03:40,874 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 255 transitions, 3356 flow [2024-01-31 16:03:40,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:40,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:40,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:40,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-01-31 16:03:40,875 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:40,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:40,875 INFO L85 PathProgramCache]: Analyzing trace with hash -57589966, now seen corresponding path program 1 times [2024-01-31 16:03:40,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:40,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352180512] [2024-01-31 16:03:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:40,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:41,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:41,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352180512] [2024-01-31 16:03:41,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352180512] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:41,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:41,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:41,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206590] [2024-01-31 16:03:41,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:41,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:41,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:41,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:41,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:41,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:41,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 255 transitions, 3356 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:41,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:41,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:41,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:41,745 INFO L124 PetriNetUnfolderBase]: 2027/3815 cut-off events. [2024-01-31 16:03:41,746 INFO L125 PetriNetUnfolderBase]: For 31335/31504 co-relation queries the response was YES. [2024-01-31 16:03:41,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18352 conditions, 3815 events. 2027/3815 cut-off events. For 31335/31504 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 25387 event pairs, 624 based on Foata normal form. 55/3707 useless extension candidates. Maximal degree in co-relation 18252. Up to 2995 conditions per place. [2024-01-31 16:03:41,781 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 231 selfloop transitions, 40 changer transitions 0/294 dead transitions. [2024-01-31 16:03:41,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 294 transitions, 4117 flow [2024-01-31 16:03:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-01-31 16:03:41,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500978473581213 [2024-01-31 16:03:41,782 INFO L175 Difference]: Start difference. First operand has 235 places, 255 transitions, 3356 flow. Second operand 7 states and 230 transitions. [2024-01-31 16:03:41,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 294 transitions, 4117 flow [2024-01-31 16:03:41,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 294 transitions, 3994 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:41,856 INFO L231 Difference]: Finished difference. Result has 239 places, 268 transitions, 3467 flow [2024-01-31 16:03:41,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3467, PETRI_PLACES=239, PETRI_TRANSITIONS=268} [2024-01-31 16:03:41,856 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 162 predicate places. [2024-01-31 16:03:41,856 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 268 transitions, 3467 flow [2024-01-31 16:03:41,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:41,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:41,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:41,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-01-31 16:03:41,857 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:41,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1490118934, now seen corresponding path program 2 times [2024-01-31 16:03:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:41,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444443021] [2024-01-31 16:03:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:42,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:42,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444443021] [2024-01-31 16:03:42,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444443021] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:42,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:42,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176777764] [2024-01-31 16:03:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:42,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:42,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:42,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 268 transitions, 3467 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:42,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:42,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:42,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:42,592 INFO L124 PetriNetUnfolderBase]: 1626/3268 cut-off events. [2024-01-31 16:03:42,593 INFO L125 PetriNetUnfolderBase]: For 29716/29943 co-relation queries the response was YES. [2024-01-31 16:03:42,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15854 conditions, 3268 events. 1626/3268 cut-off events. For 29716/29943 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22710 event pairs, 359 based on Foata normal form. 91/3179 useless extension candidates. Maximal degree in co-relation 15753. Up to 2007 conditions per place. [2024-01-31 16:03:42,621 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 181 selfloop transitions, 73 changer transitions 0/292 dead transitions. [2024-01-31 16:03:42,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 292 transitions, 4091 flow [2024-01-31 16:03:42,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 290 transitions. [2024-01-31 16:03:42,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675146771037182 [2024-01-31 16:03:42,622 INFO L175 Difference]: Start difference. First operand has 239 places, 268 transitions, 3467 flow. Second operand 7 states and 290 transitions. [2024-01-31 16:03:42,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 292 transitions, 4091 flow [2024-01-31 16:03:42,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 292 transitions, 4039 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:42,694 INFO L231 Difference]: Finished difference. Result has 242 places, 269 transitions, 3573 flow [2024-01-31 16:03:42,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3573, PETRI_PLACES=242, PETRI_TRANSITIONS=269} [2024-01-31 16:03:42,696 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 165 predicate places. [2024-01-31 16:03:42,697 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 269 transitions, 3573 flow [2024-01-31 16:03:42,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:42,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:42,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:42,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-01-31 16:03:42,697 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:42,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:42,698 INFO L85 PathProgramCache]: Analyzing trace with hash -597929346, now seen corresponding path program 2 times [2024-01-31 16:03:42,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:42,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967515788] [2024-01-31 16:03:42,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:42,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:42,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:42,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967515788] [2024-01-31 16:03:42,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967515788] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:42,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:42,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:42,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181976249] [2024-01-31 16:03:42,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:42,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:42,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:42,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:42,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:42,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:42,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 269 transitions, 3573 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:42,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:42,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:42,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:43,576 INFO L124 PetriNetUnfolderBase]: 1998/3764 cut-off events. [2024-01-31 16:03:43,577 INFO L125 PetriNetUnfolderBase]: For 30685/30854 co-relation queries the response was YES. [2024-01-31 16:03:43,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18040 conditions, 3764 events. 1998/3764 cut-off events. For 30685/30854 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24994 event pairs, 619 based on Foata normal form. 63/3664 useless extension candidates. Maximal degree in co-relation 17940. Up to 2980 conditions per place. [2024-01-31 16:03:43,615 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 226 selfloop transitions, 38 changer transitions 0/287 dead transitions. [2024-01-31 16:03:43,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 287 transitions, 4155 flow [2024-01-31 16:03:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-01-31 16:03:43,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-01-31 16:03:43,616 INFO L175 Difference]: Start difference. First operand has 242 places, 269 transitions, 3573 flow. Second operand 6 states and 196 transitions. [2024-01-31 16:03:43,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 287 transitions, 4155 flow [2024-01-31 16:03:43,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 287 transitions, 4041 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:43,702 INFO L231 Difference]: Finished difference. Result has 244 places, 269 transitions, 3544 flow [2024-01-31 16:03:43,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3544, PETRI_PLACES=244, PETRI_TRANSITIONS=269} [2024-01-31 16:03:43,702 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 167 predicate places. [2024-01-31 16:03:43,702 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 269 transitions, 3544 flow [2024-01-31 16:03:43,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:43,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:43,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:43,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-01-31 16:03:43,703 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:43,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:43,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1079634646, now seen corresponding path program 3 times [2024-01-31 16:03:43,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:43,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564755721] [2024-01-31 16:03:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:43,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:43,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:43,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564755721] [2024-01-31 16:03:43,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564755721] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:43,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:43,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:43,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148607417] [2024-01-31 16:03:43,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:43,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:43,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:43,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:43,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:43,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:43,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 269 transitions, 3544 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:43,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:43,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:43,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:44,616 INFO L124 PetriNetUnfolderBase]: 1988/3736 cut-off events. [2024-01-31 16:03:44,616 INFO L125 PetriNetUnfolderBase]: For 30386/30559 co-relation queries the response was YES. [2024-01-31 16:03:44,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17811 conditions, 3736 events. 1988/3736 cut-off events. For 30386/30559 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24801 event pairs, 640 based on Foata normal form. 55/3626 useless extension candidates. Maximal degree in co-relation 17710. Up to 2980 conditions per place. [2024-01-31 16:03:44,653 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 227 selfloop transitions, 36 changer transitions 0/286 dead transitions. [2024-01-31 16:03:44,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 286 transitions, 4116 flow [2024-01-31 16:03:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-01-31 16:03:44,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-01-31 16:03:44,654 INFO L175 Difference]: Start difference. First operand has 244 places, 269 transitions, 3544 flow. Second operand 6 states and 196 transitions. [2024-01-31 16:03:44,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 286 transitions, 4116 flow [2024-01-31 16:03:44,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 286 transitions, 4013 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-01-31 16:03:44,736 INFO L231 Difference]: Finished difference. Result has 238 places, 268 transitions, 3497 flow [2024-01-31 16:03:44,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3497, PETRI_PLACES=238, PETRI_TRANSITIONS=268} [2024-01-31 16:03:44,737 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 161 predicate places. [2024-01-31 16:03:44,737 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 268 transitions, 3497 flow [2024-01-31 16:03:44,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:44,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:44,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:44,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-01-31 16:03:44,737 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:44,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash 145915860, now seen corresponding path program 1 times [2024-01-31 16:03:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:44,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598140722] [2024-01-31 16:03:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:44,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:44,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598140722] [2024-01-31 16:03:44,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598140722] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:44,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:44,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:44,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615651432] [2024-01-31 16:03:44,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:44,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:44,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:44,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:44,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 268 transitions, 3497 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:44,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:44,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:44,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:45,472 INFO L124 PetriNetUnfolderBase]: 1616/3256 cut-off events. [2024-01-31 16:03:45,472 INFO L125 PetriNetUnfolderBase]: For 31337/31560 co-relation queries the response was YES. [2024-01-31 16:03:45,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15736 conditions, 3256 events. 1616/3256 cut-off events. For 31337/31560 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22567 event pairs, 430 based on Foata normal form. 110/3196 useless extension candidates. Maximal degree in co-relation 15642. Up to 2347 conditions per place. [2024-01-31 16:03:45,507 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 185 selfloop transitions, 68 changer transitions 0/291 dead transitions. [2024-01-31 16:03:45,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 291 transitions, 4209 flow [2024-01-31 16:03:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-01-31 16:03:45,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5547945205479452 [2024-01-31 16:03:45,508 INFO L175 Difference]: Start difference. First operand has 238 places, 268 transitions, 3497 flow. Second operand 6 states and 243 transitions. [2024-01-31 16:03:45,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 291 transitions, 4209 flow [2024-01-31 16:03:45,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 291 transitions, 4111 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:45,580 INFO L231 Difference]: Finished difference. Result has 240 places, 283 transitions, 3796 flow [2024-01-31 16:03:45,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3399, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3796, PETRI_PLACES=240, PETRI_TRANSITIONS=283} [2024-01-31 16:03:45,580 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 163 predicate places. [2024-01-31 16:03:45,580 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 283 transitions, 3796 flow [2024-01-31 16:03:45,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:45,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:45,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:45,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-01-31 16:03:45,581 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:45,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2098105228, now seen corresponding path program 1 times [2024-01-31 16:03:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:45,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234417824] [2024-01-31 16:03:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:45,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:45,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:45,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234417824] [2024-01-31 16:03:45,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234417824] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:45,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:45,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:45,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684911851] [2024-01-31 16:03:45,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:45,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:45,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:45,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:45,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:45,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 283 transitions, 3796 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:45,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:45,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:45,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:46,723 INFO L124 PetriNetUnfolderBase]: 2073/3909 cut-off events. [2024-01-31 16:03:46,723 INFO L125 PetriNetUnfolderBase]: For 32765/33023 co-relation queries the response was YES. [2024-01-31 16:03:46,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18760 conditions, 3909 events. 2073/3909 cut-off events. For 32765/33023 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25923 event pairs, 636 based on Foata normal form. 67/3782 useless extension candidates. Maximal degree in co-relation 18664. Up to 3076 conditions per place. [2024-01-31 16:03:46,762 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 248 selfloop transitions, 56 changer transitions 0/327 dead transitions. [2024-01-31 16:03:46,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 327 transitions, 4691 flow [2024-01-31 16:03:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-01-31 16:03:46,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-01-31 16:03:46,764 INFO L175 Difference]: Start difference. First operand has 240 places, 283 transitions, 3796 flow. Second operand 8 states and 258 transitions. [2024-01-31 16:03:46,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 327 transitions, 4691 flow [2024-01-31 16:03:46,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 327 transitions, 4621 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:46,859 INFO L231 Difference]: Finished difference. Result has 246 places, 299 transitions, 4080 flow [2024-01-31 16:03:46,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3728, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4080, PETRI_PLACES=246, PETRI_TRANSITIONS=299} [2024-01-31 16:03:46,859 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 169 predicate places. [2024-01-31 16:03:46,860 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 299 transitions, 4080 flow [2024-01-31 16:03:46,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:46,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:46,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:46,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-01-31 16:03:46,860 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:46,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash 887775766, now seen corresponding path program 2 times [2024-01-31 16:03:46,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:46,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589680833] [2024-01-31 16:03:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:46,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:47,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:47,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589680833] [2024-01-31 16:03:47,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589680833] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:47,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:47,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:47,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697351523] [2024-01-31 16:03:47,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:47,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:47,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:47,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:47,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:47,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:47,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 299 transitions, 4080 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:47,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:47,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:47,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:47,661 INFO L124 PetriNetUnfolderBase]: 1669/3346 cut-off events. [2024-01-31 16:03:47,661 INFO L125 PetriNetUnfolderBase]: For 33347/33577 co-relation queries the response was YES. [2024-01-31 16:03:47,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16962 conditions, 3346 events. 1669/3346 cut-off events. For 33347/33577 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 23353 event pairs, 434 based on Foata normal form. 107/3270 useless extension candidates. Maximal degree in co-relation 16864. Up to 2092 conditions per place. [2024-01-31 16:03:47,698 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 222 selfloop transitions, 74 changer transitions 0/334 dead transitions. [2024-01-31 16:03:47,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 334 transitions, 4924 flow [2024-01-31 16:03:47,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 291 transitions. [2024-01-31 16:03:47,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694716242661448 [2024-01-31 16:03:47,699 INFO L175 Difference]: Start difference. First operand has 246 places, 299 transitions, 4080 flow. Second operand 7 states and 291 transitions. [2024-01-31 16:03:47,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 334 transitions, 4924 flow [2024-01-31 16:03:47,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 334 transitions, 4870 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:47,780 INFO L231 Difference]: Finished difference. Result has 250 places, 309 transitions, 4306 flow [2024-01-31 16:03:47,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4306, PETRI_PLACES=250, PETRI_TRANSITIONS=309} [2024-01-31 16:03:47,781 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 173 predicate places. [2024-01-31 16:03:47,781 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 309 transitions, 4306 flow [2024-01-31 16:03:47,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:47,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:47,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:47,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-01-31 16:03:47,781 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:47,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1781901898, now seen corresponding path program 3 times [2024-01-31 16:03:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:47,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457555875] [2024-01-31 16:03:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:47,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:47,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:47,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457555875] [2024-01-31 16:03:47,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457555875] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:47,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:47,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:47,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244286319] [2024-01-31 16:03:47,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:47,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:47,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:47,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:47,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:47,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:47,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 309 transitions, 4306 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:47,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:47,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:47,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:48,536 INFO L124 PetriNetUnfolderBase]: 1665/3335 cut-off events. [2024-01-31 16:03:48,536 INFO L125 PetriNetUnfolderBase]: For 35075/35315 co-relation queries the response was YES. [2024-01-31 16:03:48,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17225 conditions, 3335 events. 1665/3335 cut-off events. For 35075/35315 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 23199 event pairs, 439 based on Foata normal form. 92/3240 useless extension candidates. Maximal degree in co-relation 17125. Up to 2092 conditions per place. [2024-01-31 16:03:48,577 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 211 selfloop transitions, 82 changer transitions 0/331 dead transitions. [2024-01-31 16:03:48,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 331 transitions, 5006 flow [2024-01-31 16:03:48,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 287 transitions. [2024-01-31 16:03:48,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616438356164384 [2024-01-31 16:03:48,579 INFO L175 Difference]: Start difference. First operand has 250 places, 309 transitions, 4306 flow. Second operand 7 states and 287 transitions. [2024-01-31 16:03:48,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 331 transitions, 5006 flow [2024-01-31 16:03:48,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 331 transitions, 4868 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:48,667 INFO L231 Difference]: Finished difference. Result has 254 places, 310 transitions, 4351 flow [2024-01-31 16:03:48,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4351, PETRI_PLACES=254, PETRI_TRANSITIONS=310} [2024-01-31 16:03:48,668 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 177 predicate places. [2024-01-31 16:03:48,668 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 310 transitions, 4351 flow [2024-01-31 16:03:48,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:48,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:48,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:48,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-01-31 16:03:48,669 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:48,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash -561229550, now seen corresponding path program 2 times [2024-01-31 16:03:48,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:48,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916206428] [2024-01-31 16:03:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:48,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:48,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916206428] [2024-01-31 16:03:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916206428] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:48,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:48,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:48,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657078595] [2024-01-31 16:03:48,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:48,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:48,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:48,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:48,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:48,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 310 transitions, 4351 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:48,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:48,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:48,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:49,589 INFO L124 PetriNetUnfolderBase]: 2085/3904 cut-off events. [2024-01-31 16:03:49,589 INFO L125 PetriNetUnfolderBase]: For 35390/35578 co-relation queries the response was YES. [2024-01-31 16:03:49,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19634 conditions, 3904 events. 2085/3904 cut-off events. For 35390/35578 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25847 event pairs, 592 based on Foata normal form. 63/3782 useless extension candidates. Maximal degree in co-relation 19533. Up to 2677 conditions per place. [2024-01-31 16:03:49,630 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 248 selfloop transitions, 74 changer transitions 0/345 dead transitions. [2024-01-31 16:03:49,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 345 transitions, 5153 flow [2024-01-31 16:03:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:49,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-01-31 16:03:49,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-01-31 16:03:49,631 INFO L175 Difference]: Start difference. First operand has 254 places, 310 transitions, 4351 flow. Second operand 8 states and 259 transitions. [2024-01-31 16:03:49,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 345 transitions, 5153 flow [2024-01-31 16:03:49,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 345 transitions, 5067 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:49,735 INFO L231 Difference]: Finished difference. Result has 260 places, 315 transitions, 4468 flow [2024-01-31 16:03:49,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4265, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4468, PETRI_PLACES=260, PETRI_TRANSITIONS=315} [2024-01-31 16:03:49,735 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 183 predicate places. [2024-01-31 16:03:49,736 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 315 transitions, 4468 flow [2024-01-31 16:03:49,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:49,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:49,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:49,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-01-31 16:03:49,736 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:49,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1310259880, now seen corresponding path program 3 times [2024-01-31 16:03:49,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:49,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660896189] [2024-01-31 16:03:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:49,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:49,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:49,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660896189] [2024-01-31 16:03:49,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660896189] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:49,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:49,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:49,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708012399] [2024-01-31 16:03:49,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:49,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:49,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:49,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:49,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:49,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:49,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 315 transitions, 4468 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:49,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:49,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:49,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:50,664 INFO L124 PetriNetUnfolderBase]: 2103/3934 cut-off events. [2024-01-31 16:03:50,664 INFO L125 PetriNetUnfolderBase]: For 36509/36697 co-relation queries the response was YES. [2024-01-31 16:03:50,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20005 conditions, 3934 events. 2103/3934 cut-off events. For 36509/36697 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26091 event pairs, 592 based on Foata normal form. 63/3812 useless extension candidates. Maximal degree in co-relation 19902. Up to 2685 conditions per place. [2024-01-31 16:03:50,712 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 246 selfloop transitions, 80 changer transitions 0/349 dead transitions. [2024-01-31 16:03:50,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 349 transitions, 5295 flow [2024-01-31 16:03:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-01-31 16:03:50,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-01-31 16:03:50,713 INFO L175 Difference]: Start difference. First operand has 260 places, 315 transitions, 4468 flow. Second operand 8 states and 259 transitions. [2024-01-31 16:03:50,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 349 transitions, 5295 flow [2024-01-31 16:03:50,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 349 transitions, 5180 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:50,819 INFO L231 Difference]: Finished difference. Result has 263 places, 319 transitions, 4552 flow [2024-01-31 16:03:50,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4359, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4552, PETRI_PLACES=263, PETRI_TRANSITIONS=319} [2024-01-31 16:03:50,820 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 186 predicate places. [2024-01-31 16:03:50,820 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 319 transitions, 4552 flow [2024-01-31 16:03:50,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:50,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:50,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:50,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-01-31 16:03:50,820 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:50,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:50,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1536373570, now seen corresponding path program 4 times [2024-01-31 16:03:50,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:50,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696306671] [2024-01-31 16:03:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:50,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:51,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:51,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696306671] [2024-01-31 16:03:51,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696306671] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:51,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:51,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:51,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199288057] [2024-01-31 16:03:51,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:51,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:51,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:51,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:51,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:51,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 319 transitions, 4552 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:51,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:51,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:51,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:51,814 INFO L124 PetriNetUnfolderBase]: 2103/3894 cut-off events. [2024-01-31 16:03:51,814 INFO L125 PetriNetUnfolderBase]: For 36891/37079 co-relation queries the response was YES. [2024-01-31 16:03:51,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20030 conditions, 3894 events. 2103/3894 cut-off events. For 36891/37079 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25684 event pairs, 442 based on Foata normal form. 63/3789 useless extension candidates. Maximal degree in co-relation 19926. Up to 2689 conditions per place. [2024-01-31 16:03:51,856 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 242 selfloop transitions, 86 changer transitions 0/351 dead transitions. [2024-01-31 16:03:51,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 351 transitions, 5354 flow [2024-01-31 16:03:51,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-01-31 16:03:51,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-01-31 16:03:51,857 INFO L175 Difference]: Start difference. First operand has 263 places, 319 transitions, 4552 flow. Second operand 8 states and 258 transitions. [2024-01-31 16:03:51,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 351 transitions, 5354 flow [2024-01-31 16:03:51,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 351 transitions, 5228 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:51,958 INFO L231 Difference]: Finished difference. Result has 268 places, 322 transitions, 4656 flow [2024-01-31 16:03:51,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4428, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4656, PETRI_PLACES=268, PETRI_TRANSITIONS=322} [2024-01-31 16:03:51,959 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 191 predicate places. [2024-01-31 16:03:51,959 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 322 transitions, 4656 flow [2024-01-31 16:03:51,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:51,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:51,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:51,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-01-31 16:03:51,959 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:51,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1119273534, now seen corresponding path program 1 times [2024-01-31 16:03:51,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:51,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506724841] [2024-01-31 16:03:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:51,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:52,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:52,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506724841] [2024-01-31 16:03:52,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506724841] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:52,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:52,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:52,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437178846] [2024-01-31 16:03:52,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:52,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:52,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:52,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:52,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:52,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:52,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 322 transitions, 4656 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:52,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:52,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:52,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:53,040 INFO L124 PetriNetUnfolderBase]: 2145/4024 cut-off events. [2024-01-31 16:03:53,040 INFO L125 PetriNetUnfolderBase]: For 39219/39519 co-relation queries the response was YES. [2024-01-31 16:03:53,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20387 conditions, 4024 events. 2145/4024 cut-off events. For 39219/39519 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 26610 event pairs, 624 based on Foata normal form. 69/3891 useless extension candidates. Maximal degree in co-relation 20281. Up to 3236 conditions per place. [2024-01-31 16:03:53,085 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 271 selfloop transitions, 56 changer transitions 0/353 dead transitions. [2024-01-31 16:03:53,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 353 transitions, 5435 flow [2024-01-31 16:03:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:03:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:03:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 302 transitions. [2024-01-31 16:03:53,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4136986301369863 [2024-01-31 16:03:53,087 INFO L175 Difference]: Start difference. First operand has 268 places, 322 transitions, 4656 flow. Second operand 10 states and 302 transitions. [2024-01-31 16:03:53,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 353 transitions, 5435 flow [2024-01-31 16:03:53,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 353 transitions, 5286 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:53,201 INFO L231 Difference]: Finished difference. Result has 272 places, 326 transitions, 4658 flow [2024-01-31 16:03:53,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4509, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4658, PETRI_PLACES=272, PETRI_TRANSITIONS=326} [2024-01-31 16:03:53,202 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 195 predicate places. [2024-01-31 16:03:53,202 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 326 transitions, 4658 flow [2024-01-31 16:03:53,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:53,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:53,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:53,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-01-31 16:03:53,203 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:53,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:53,203 INFO L85 PathProgramCache]: Analyzing trace with hash -677379702, now seen corresponding path program 2 times [2024-01-31 16:03:53,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:53,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032988051] [2024-01-31 16:03:53,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:53,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:53,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:53,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032988051] [2024-01-31 16:03:53,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032988051] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:53,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:53,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:53,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420473167] [2024-01-31 16:03:53,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:53,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:53,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:53,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:53,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 326 transitions, 4658 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:53,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:53,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:53,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:54,302 INFO L124 PetriNetUnfolderBase]: 2173/4060 cut-off events. [2024-01-31 16:03:54,302 INFO L125 PetriNetUnfolderBase]: For 38217/38528 co-relation queries the response was YES. [2024-01-31 16:03:54,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20466 conditions, 4060 events. 2173/4060 cut-off events. For 38217/38528 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 26755 event pairs, 625 based on Foata normal form. 77/3931 useless extension candidates. Maximal degree in co-relation 20360. Up to 3344 conditions per place. [2024-01-31 16:03:54,351 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 276 selfloop transitions, 48 changer transitions 0/350 dead transitions. [2024-01-31 16:03:54,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 350 transitions, 5408 flow [2024-01-31 16:03:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:03:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:03:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 273 transitions. [2024-01-31 16:03:54,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155251141552511 [2024-01-31 16:03:54,352 INFO L175 Difference]: Start difference. First operand has 272 places, 326 transitions, 4658 flow. Second operand 9 states and 273 transitions. [2024-01-31 16:03:54,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 350 transitions, 5408 flow [2024-01-31 16:03:54,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 350 transitions, 5244 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:54,469 INFO L231 Difference]: Finished difference. Result has 276 places, 330 transitions, 4647 flow [2024-01-31 16:03:54,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4504, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4647, PETRI_PLACES=276, PETRI_TRANSITIONS=330} [2024-01-31 16:03:54,470 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-01-31 16:03:54,470 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 330 transitions, 4647 flow [2024-01-31 16:03:54,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:54,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:54,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:54,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-01-31 16:03:54,470 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:54,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:54,470 INFO L85 PathProgramCache]: Analyzing trace with hash -693309946, now seen corresponding path program 3 times [2024-01-31 16:03:54,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:54,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478019182] [2024-01-31 16:03:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:54,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:54,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:54,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478019182] [2024-01-31 16:03:54,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478019182] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:54,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:54,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:54,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144263270] [2024-01-31 16:03:54,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:54,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:54,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:54,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:54,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:54,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:54,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 330 transitions, 4647 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:54,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:54,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:54,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:55,507 INFO L124 PetriNetUnfolderBase]: 2175/4075 cut-off events. [2024-01-31 16:03:55,508 INFO L125 PetriNetUnfolderBase]: For 38313/38609 co-relation queries the response was YES. [2024-01-31 16:03:55,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20285 conditions, 4075 events. 2175/4075 cut-off events. For 38313/38609 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27056 event pairs, 595 based on Foata normal form. 77/3949 useless extension candidates. Maximal degree in co-relation 20179. Up to 2661 conditions per place. [2024-01-31 16:03:55,562 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 265 selfloop transitions, 83 changer transitions 0/374 dead transitions. [2024-01-31 16:03:55,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 374 transitions, 5554 flow [2024-01-31 16:03:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:03:55,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:03:55,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 290 transitions. [2024-01-31 16:03:55,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441400304414003 [2024-01-31 16:03:55,563 INFO L175 Difference]: Start difference. First operand has 276 places, 330 transitions, 4647 flow. Second operand 9 states and 290 transitions. [2024-01-31 16:03:55,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 374 transitions, 5554 flow [2024-01-31 16:03:55,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 374 transitions, 5487 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:55,677 INFO L231 Difference]: Finished difference. Result has 281 places, 335 transitions, 4784 flow [2024-01-31 16:03:55,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4580, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4784, PETRI_PLACES=281, PETRI_TRANSITIONS=335} [2024-01-31 16:03:55,678 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-01-31 16:03:55,678 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 335 transitions, 4784 flow [2024-01-31 16:03:55,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:55,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:55,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:55,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-01-31 16:03:55,679 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:55,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:55,679 INFO L85 PathProgramCache]: Analyzing trace with hash -225150454, now seen corresponding path program 4 times [2024-01-31 16:03:55,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:55,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7351926] [2024-01-31 16:03:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:55,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:55,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:55,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7351926] [2024-01-31 16:03:55,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7351926] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:55,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:55,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:55,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710106880] [2024-01-31 16:03:55,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:55,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:55,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:55,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:55,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:55,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:55,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 335 transitions, 4784 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:55,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:55,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:55,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:56,790 INFO L124 PetriNetUnfolderBase]: 2169/4068 cut-off events. [2024-01-31 16:03:56,791 INFO L125 PetriNetUnfolderBase]: For 40030/40329 co-relation queries the response was YES. [2024-01-31 16:03:56,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20482 conditions, 4068 events. 2169/4068 cut-off events. For 40030/40329 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27002 event pairs, 600 based on Foata normal form. 65/3930 useless extension candidates. Maximal degree in co-relation 20375. Up to 2661 conditions per place. [2024-01-31 16:03:56,840 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 258 selfloop transitions, 87 changer transitions 0/371 dead transitions. [2024-01-31 16:03:56,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 371 transitions, 5634 flow [2024-01-31 16:03:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:03:56,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:03:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 287 transitions. [2024-01-31 16:03:56,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368340943683409 [2024-01-31 16:03:56,841 INFO L175 Difference]: Start difference. First operand has 281 places, 335 transitions, 4784 flow. Second operand 9 states and 287 transitions. [2024-01-31 16:03:56,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 371 transitions, 5634 flow [2024-01-31 16:03:56,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 371 transitions, 5503 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:56,966 INFO L231 Difference]: Finished difference. Result has 284 places, 335 transitions, 4832 flow [2024-01-31 16:03:56,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4832, PETRI_PLACES=284, PETRI_TRANSITIONS=335} [2024-01-31 16:03:56,967 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 207 predicate places. [2024-01-31 16:03:56,967 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 335 transitions, 4832 flow [2024-01-31 16:03:56,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:56,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:56,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:56,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-01-31 16:03:56,968 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:56,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:56,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2131769834, now seen corresponding path program 1 times [2024-01-31 16:03:56,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:56,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753081151] [2024-01-31 16:03:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:56,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:57,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:57,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753081151] [2024-01-31 16:03:57,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753081151] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:57,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:57,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:03:57,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94135875] [2024-01-31 16:03:57,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:57,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:03:57,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:03:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:03:57,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:57,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 335 transitions, 4832 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:57,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:57,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:57,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:57,759 INFO L124 PetriNetUnfolderBase]: 1758/3481 cut-off events. [2024-01-31 16:03:57,759 INFO L125 PetriNetUnfolderBase]: For 45463/45712 co-relation queries the response was YES. [2024-01-31 16:03:57,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18341 conditions, 3481 events. 1758/3481 cut-off events. For 45463/45712 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24586 event pairs, 303 based on Foata normal form. 131/3347 useless extension candidates. Maximal degree in co-relation 18234. Up to 1040 conditions per place. [2024-01-31 16:03:57,803 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 214 selfloop transitions, 107 changer transitions 0/362 dead transitions. [2024-01-31 16:03:57,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 362 transitions, 5708 flow [2024-01-31 16:03:57,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:03:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:03:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-01-31 16:03:57,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2024-01-31 16:03:57,804 INFO L175 Difference]: Start difference. First operand has 284 places, 335 transitions, 4832 flow. Second operand 4 states and 186 transitions. [2024-01-31 16:03:57,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 362 transitions, 5708 flow [2024-01-31 16:03:57,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 362 transitions, 5503 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:03:57,917 INFO L231 Difference]: Finished difference. Result has 281 places, 336 transitions, 4964 flow [2024-01-31 16:03:57,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4630, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4964, PETRI_PLACES=281, PETRI_TRANSITIONS=336} [2024-01-31 16:03:57,918 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-01-31 16:03:57,918 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 336 transitions, 4964 flow [2024-01-31 16:03:57,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:57,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:57,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:57,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-01-31 16:03:57,919 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:57,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2127782146, now seen corresponding path program 2 times [2024-01-31 16:03:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759339880] [2024-01-31 16:03:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:58,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:58,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759339880] [2024-01-31 16:03:58,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759339880] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:58,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:58,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:03:58,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112363174] [2024-01-31 16:03:58,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:58,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:03:58,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:58,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:03:58,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:03:58,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:58,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 336 transitions, 4964 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:58,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:58,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:58,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:58,493 INFO L124 PetriNetUnfolderBase]: 1246/2412 cut-off events. [2024-01-31 16:03:58,493 INFO L125 PetriNetUnfolderBase]: For 41286/41493 co-relation queries the response was YES. [2024-01-31 16:03:58,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14405 conditions, 2412 events. 1246/2412 cut-off events. For 41286/41493 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 16208 event pairs, 285 based on Foata normal form. 133/2394 useless extension candidates. Maximal degree in co-relation 14297. Up to 966 conditions per place. [2024-01-31 16:03:58,519 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 209 selfloop transitions, 86 changer transitions 1/337 dead transitions. [2024-01-31 16:03:58,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 337 transitions, 5556 flow [2024-01-31 16:03:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-01-31 16:03:58,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698630136986301 [2024-01-31 16:03:58,520 INFO L175 Difference]: Start difference. First operand has 281 places, 336 transitions, 4964 flow. Second operand 5 states and 208 transitions. [2024-01-31 16:03:58,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 337 transitions, 5556 flow [2024-01-31 16:03:58,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 337 transitions, 5389 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:58,738 INFO L231 Difference]: Finished difference. Result has 279 places, 325 transitions, 4994 flow [2024-01-31 16:03:58,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4723, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4994, PETRI_PLACES=279, PETRI_TRANSITIONS=325} [2024-01-31 16:03:58,739 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2024-01-31 16:03:58,739 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 325 transitions, 4994 flow [2024-01-31 16:03:58,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:58,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:58,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:58,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-01-31 16:03:58,740 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:58,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:58,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1584332732, now seen corresponding path program 2 times [2024-01-31 16:03:58,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:58,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602539455] [2024-01-31 16:03:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:58,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:58,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:58,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602539455] [2024-01-31 16:03:58,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602539455] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:58,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:58,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:58,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94681659] [2024-01-31 16:03:58,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:58,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:58,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:58,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:59,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:59,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 325 transitions, 4994 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:59,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:59,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:59,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:59,678 INFO L124 PetriNetUnfolderBase]: 1677/3050 cut-off events. [2024-01-31 16:03:59,678 INFO L125 PetriNetUnfolderBase]: For 41636/41915 co-relation queries the response was YES. [2024-01-31 16:03:59,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17509 conditions, 3050 events. 1677/3050 cut-off events. For 41636/41915 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19550 event pairs, 328 based on Foata normal form. 81/3026 useless extension candidates. Maximal degree in co-relation 17402. Up to 2549 conditions per place. [2024-01-31 16:03:59,716 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 269 selfloop transitions, 45 changer transitions 0/340 dead transitions. [2024-01-31 16:03:59,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 340 transitions, 5672 flow [2024-01-31 16:03:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-01-31 16:03:59,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337899543378995 [2024-01-31 16:03:59,717 INFO L175 Difference]: Start difference. First operand has 279 places, 325 transitions, 4994 flow. Second operand 6 states and 190 transitions. [2024-01-31 16:03:59,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 340 transitions, 5672 flow [2024-01-31 16:03:59,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 340 transitions, 5463 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:59,918 INFO L231 Difference]: Finished difference. Result has 279 places, 326 transitions, 4891 flow [2024-01-31 16:03:59,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4786, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4891, PETRI_PLACES=279, PETRI_TRANSITIONS=326} [2024-01-31 16:03:59,918 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2024-01-31 16:03:59,918 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 326 transitions, 4891 flow [2024-01-31 16:03:59,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:59,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:59,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:59,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-01-31 16:03:59,919 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:59,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:59,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2065502928, now seen corresponding path program 3 times [2024-01-31 16:03:59,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:59,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150768032] [2024-01-31 16:03:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:59,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:00,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:00,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150768032] [2024-01-31 16:04:00,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150768032] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:00,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:00,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:00,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823184975] [2024-01-31 16:04:00,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:00,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:00,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:00,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:00,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:00,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 326 transitions, 4891 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:00,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:00,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:00,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:00,798 INFO L124 PetriNetUnfolderBase]: 1677/3053 cut-off events. [2024-01-31 16:04:00,798 INFO L125 PetriNetUnfolderBase]: For 38956/39195 co-relation queries the response was YES. [2024-01-31 16:04:00,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17161 conditions, 3053 events. 1677/3053 cut-off events. For 38956/39195 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 19605 event pairs, 309 based on Foata normal form. 80/3031 useless extension candidates. Maximal degree in co-relation 17056. Up to 2551 conditions per place. [2024-01-31 16:04:00,838 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 269 selfloop transitions, 44 changer transitions 0/339 dead transitions. [2024-01-31 16:04:00,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 339 transitions, 5559 flow [2024-01-31 16:04:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-01-31 16:04:00,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269406392694064 [2024-01-31 16:04:00,839 INFO L175 Difference]: Start difference. First operand has 279 places, 326 transitions, 4891 flow. Second operand 6 states and 187 transitions. [2024-01-31 16:04:00,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 339 transitions, 5559 flow [2024-01-31 16:04:01,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 339 transitions, 5494 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:01,016 INFO L231 Difference]: Finished difference. Result has 280 places, 327 transitions, 4929 flow [2024-01-31 16:04:01,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4827, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4929, PETRI_PLACES=280, PETRI_TRANSITIONS=327} [2024-01-31 16:04:01,017 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 203 predicate places. [2024-01-31 16:04:01,017 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 327 transitions, 4929 flow [2024-01-31 16:04:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:01,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:01,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:01,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-01-31 16:04:01,017 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:01,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2065539198, now seen corresponding path program 4 times [2024-01-31 16:04:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:01,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31813344] [2024-01-31 16:04:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:01,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:01,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:01,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31813344] [2024-01-31 16:04:01,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31813344] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:01,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:01,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234500372] [2024-01-31 16:04:01,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:01,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:01,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:01,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:01,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:01,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:01,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 327 transitions, 4929 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:01,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:01,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:01,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:01,853 INFO L124 PetriNetUnfolderBase]: 1674/3044 cut-off events. [2024-01-31 16:04:01,853 INFO L125 PetriNetUnfolderBase]: For 39134/39373 co-relation queries the response was YES. [2024-01-31 16:04:01,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17108 conditions, 3044 events. 1674/3044 cut-off events. For 39134/39373 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 19474 event pairs, 309 based on Foata normal form. 76/3018 useless extension candidates. Maximal degree in co-relation 17004. Up to 2551 conditions per place. [2024-01-31 16:04:01,885 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 263 selfloop transitions, 48 changer transitions 0/337 dead transitions. [2024-01-31 16:04:01,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 337 transitions, 5565 flow [2024-01-31 16:04:01,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-01-31 16:04:01,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223744292237443 [2024-01-31 16:04:01,886 INFO L175 Difference]: Start difference. First operand has 280 places, 327 transitions, 4929 flow. Second operand 6 states and 185 transitions. [2024-01-31 16:04:01,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 337 transitions, 5565 flow [2024-01-31 16:04:02,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 337 transitions, 5404 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-31 16:04:02,056 INFO L231 Difference]: Finished difference. Result has 274 places, 326 transitions, 4848 flow [2024-01-31 16:04:02,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4752, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4848, PETRI_PLACES=274, PETRI_TRANSITIONS=326} [2024-01-31 16:04:02,061 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 197 predicate places. [2024-01-31 16:04:02,061 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 326 transitions, 4848 flow [2024-01-31 16:04:02,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:02,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:02,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:02,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-01-31 16:04:02,062 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:02,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:02,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1824643736, now seen corresponding path program 5 times [2024-01-31 16:04:02,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:02,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205029933] [2024-01-31 16:04:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:02,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:02,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:02,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:02,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205029933] [2024-01-31 16:04:02,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205029933] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:02,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:02,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281372317] [2024-01-31 16:04:02,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:02,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:02,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:02,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:02,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:02,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 326 transitions, 4848 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:02,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:02,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:02,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:02,972 INFO L124 PetriNetUnfolderBase]: 1680/3045 cut-off events. [2024-01-31 16:04:02,972 INFO L125 PetriNetUnfolderBase]: For 38680/38967 co-relation queries the response was YES. [2024-01-31 16:04:02,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17081 conditions, 3045 events. 1680/3045 cut-off events. For 38680/38967 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19467 event pairs, 347 based on Foata normal form. 65/3004 useless extension candidates. Maximal degree in co-relation 16983. Up to 2525 conditions per place. [2024-01-31 16:04:03,009 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 256 selfloop transitions, 63 changer transitions 0/345 dead transitions. [2024-01-31 16:04:03,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 345 transitions, 5545 flow [2024-01-31 16:04:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-01-31 16:04:03,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-01-31 16:04:03,010 INFO L175 Difference]: Start difference. First operand has 274 places, 326 transitions, 4848 flow. Second operand 8 states and 245 transitions. [2024-01-31 16:04:03,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 345 transitions, 5545 flow [2024-01-31 16:04:03,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 345 transitions, 5427 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:03,199 INFO L231 Difference]: Finished difference. Result has 276 places, 326 transitions, 4870 flow [2024-01-31 16:04:03,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4730, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4870, PETRI_PLACES=276, PETRI_TRANSITIONS=326} [2024-01-31 16:04:03,200 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-01-31 16:04:03,200 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 326 transitions, 4870 flow [2024-01-31 16:04:03,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:03,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:03,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:03,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-01-31 16:04:03,200 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:03,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:03,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2049550632, now seen corresponding path program 6 times [2024-01-31 16:04:03,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:03,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153834462] [2024-01-31 16:04:03,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:03,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:03,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153834462] [2024-01-31 16:04:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153834462] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:03,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:03,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156138640] [2024-01-31 16:04:03,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:03,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:03,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:03,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:03,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 326 transitions, 4870 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:03,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:03,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:03,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:04,118 INFO L124 PetriNetUnfolderBase]: 1698/3077 cut-off events. [2024-01-31 16:04:04,119 INFO L125 PetriNetUnfolderBase]: For 39350/39633 co-relation queries the response was YES. [2024-01-31 16:04:04,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17247 conditions, 3077 events. 1698/3077 cut-off events. For 39350/39633 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 19770 event pairs, 296 based on Foata normal form. 81/3049 useless extension candidates. Maximal degree in co-relation 17149. Up to 2083 conditions per place. [2024-01-31 16:04:04,146 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 243 selfloop transitions, 91 changer transitions 0/360 dead transitions. [2024-01-31 16:04:04,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 360 transitions, 5708 flow [2024-01-31 16:04:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2024-01-31 16:04:04,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349315068493151 [2024-01-31 16:04:04,147 INFO L175 Difference]: Start difference. First operand has 276 places, 326 transitions, 4870 flow. Second operand 8 states and 254 transitions. [2024-01-31 16:04:04,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 360 transitions, 5708 flow [2024-01-31 16:04:04,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 360 transitions, 5535 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:04,298 INFO L231 Difference]: Finished difference. Result has 276 places, 331 transitions, 4934 flow [2024-01-31 16:04:04,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4934, PETRI_PLACES=276, PETRI_TRANSITIONS=331} [2024-01-31 16:04:04,298 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-01-31 16:04:04,298 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 331 transitions, 4934 flow [2024-01-31 16:04:04,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:04,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:04,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:04,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-01-31 16:04:04,299 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:04,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:04,300 INFO L85 PathProgramCache]: Analyzing trace with hash 99392834, now seen corresponding path program 7 times [2024-01-31 16:04:04,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:04,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620283714] [2024-01-31 16:04:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:04,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:04,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:04,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620283714] [2024-01-31 16:04:04,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620283714] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:04,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:04,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:04,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35862848] [2024-01-31 16:04:04,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:04,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:04,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:04,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:04,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:04,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:04,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 331 transitions, 4934 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:04,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:04,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:04,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:05,131 INFO L124 PetriNetUnfolderBase]: 1746/3131 cut-off events. [2024-01-31 16:04:05,131 INFO L125 PetriNetUnfolderBase]: For 40440/40700 co-relation queries the response was YES. [2024-01-31 16:04:05,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17765 conditions, 3131 events. 1746/3131 cut-off events. For 40440/40700 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 19827 event pairs, 278 based on Foata normal form. 98/3113 useless extension candidates. Maximal degree in co-relation 17667. Up to 2131 conditions per place. [2024-01-31 16:04:05,167 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 233 selfloop transitions, 106 changer transitions 0/365 dead transitions. [2024-01-31 16:04:05,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 365 transitions, 5813 flow [2024-01-31 16:04:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-01-31 16:04:05,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:04:05,168 INFO L175 Difference]: Start difference. First operand has 276 places, 331 transitions, 4934 flow. Second operand 8 states and 250 transitions. [2024-01-31 16:04:05,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 365 transitions, 5813 flow [2024-01-31 16:04:05,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 365 transitions, 5645 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:05,334 INFO L231 Difference]: Finished difference. Result has 279 places, 342 transitions, 5137 flow [2024-01-31 16:04:05,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4792, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5137, PETRI_PLACES=279, PETRI_TRANSITIONS=342} [2024-01-31 16:04:05,335 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2024-01-31 16:04:05,335 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 342 transitions, 5137 flow [2024-01-31 16:04:05,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:05,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:05,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:05,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-01-31 16:04:05,335 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:05,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2018094312, now seen corresponding path program 8 times [2024-01-31 16:04:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720571617] [2024-01-31 16:04:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:05,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:05,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:05,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720571617] [2024-01-31 16:04:05,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720571617] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:05,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:05,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:05,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972452729] [2024-01-31 16:04:05,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:05,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:05,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:05,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:05,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:05,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:05,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 342 transitions, 5137 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:05,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:05,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:05,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:06,234 INFO L124 PetriNetUnfolderBase]: 1704/3087 cut-off events. [2024-01-31 16:04:06,235 INFO L125 PetriNetUnfolderBase]: For 40398/40683 co-relation queries the response was YES. [2024-01-31 16:04:06,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17636 conditions, 3087 events. 1704/3087 cut-off events. For 40398/40683 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 19782 event pairs, 302 based on Foata normal form. 61/3039 useless extension candidates. Maximal degree in co-relation 17538. Up to 2095 conditions per place. [2024-01-31 16:04:06,274 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 235 selfloop transitions, 106 changer transitions 0/367 dead transitions. [2024-01-31 16:04:06,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 367 transitions, 5925 flow [2024-01-31 16:04:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-01-31 16:04:06,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2024-01-31 16:04:06,276 INFO L175 Difference]: Start difference. First operand has 279 places, 342 transitions, 5137 flow. Second operand 8 states and 251 transitions. [2024-01-31 16:04:06,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 367 transitions, 5925 flow [2024-01-31 16:04:06,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 367 transitions, 5759 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:06,445 INFO L231 Difference]: Finished difference. Result has 281 places, 342 transitions, 5193 flow [2024-01-31 16:04:06,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5193, PETRI_PLACES=281, PETRI_TRANSITIONS=342} [2024-01-31 16:04:06,445 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-01-31 16:04:06,445 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 342 transitions, 5193 flow [2024-01-31 16:04:06,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:06,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:06,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:06,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-01-31 16:04:06,446 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:06,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:06,446 INFO L85 PathProgramCache]: Analyzing trace with hash 130849154, now seen corresponding path program 9 times [2024-01-31 16:04:06,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:06,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042925174] [2024-01-31 16:04:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:06,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:06,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:06,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042925174] [2024-01-31 16:04:06,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042925174] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:06,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:06,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:06,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368600799] [2024-01-31 16:04:06,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:06,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:06,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:06,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:06,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:06,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:06,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 342 transitions, 5193 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:06,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:06,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:06,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:07,314 INFO L124 PetriNetUnfolderBase]: 1770/3171 cut-off events. [2024-01-31 16:04:07,314 INFO L125 PetriNetUnfolderBase]: For 42636/42900 co-relation queries the response was YES. [2024-01-31 16:04:07,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 3171 events. 1770/3171 cut-off events. For 42636/42900 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 20128 event pairs, 278 based on Foata normal form. 98/3153 useless extension candidates. Maximal degree in co-relation 18114. Up to 2147 conditions per place. [2024-01-31 16:04:07,346 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 231 selfloop transitions, 116 changer transitions 0/373 dead transitions. [2024-01-31 16:04:07,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 373 transitions, 6078 flow [2024-01-31 16:04:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-01-31 16:04:07,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:04:07,347 INFO L175 Difference]: Start difference. First operand has 281 places, 342 transitions, 5193 flow. Second operand 8 states and 250 transitions. [2024-01-31 16:04:07,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 373 transitions, 6078 flow [2024-01-31 16:04:07,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 373 transitions, 5882 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:07,535 INFO L231 Difference]: Finished difference. Result has 283 places, 350 transitions, 5330 flow [2024-01-31 16:04:07,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5330, PETRI_PLACES=283, PETRI_TRANSITIONS=350} [2024-01-31 16:04:07,536 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 206 predicate places. [2024-01-31 16:04:07,536 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 350 transitions, 5330 flow [2024-01-31 16:04:07,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:07,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:07,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-01-31 16:04:07,537 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:07,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:07,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1163107304, now seen corresponding path program 10 times [2024-01-31 16:04:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696066672] [2024-01-31 16:04:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:07,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:07,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696066672] [2024-01-31 16:04:07,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696066672] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:07,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:07,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:07,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689898090] [2024-01-31 16:04:07,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:07,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:07,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:07,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:07,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 350 transitions, 5330 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:07,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:07,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:07,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:08,388 INFO L124 PetriNetUnfolderBase]: 1782/3191 cut-off events. [2024-01-31 16:04:08,389 INFO L125 PetriNetUnfolderBase]: For 43534/43798 co-relation queries the response was YES. [2024-01-31 16:04:08,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18342 conditions, 3191 events. 1782/3191 cut-off events. For 43534/43798 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 20253 event pairs, 296 based on Foata normal form. 72/3147 useless extension candidates. Maximal degree in co-relation 18244. Up to 2159 conditions per place. [2024-01-31 16:04:08,421 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 225 selfloop transitions, 126 changer transitions 0/377 dead transitions. [2024-01-31 16:04:08,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 377 transitions, 6174 flow [2024-01-31 16:04:08,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2024-01-31 16:04:08,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229452054794521 [2024-01-31 16:04:08,422 INFO L175 Difference]: Start difference. First operand has 283 places, 350 transitions, 5330 flow. Second operand 8 states and 247 transitions. [2024-01-31 16:04:08,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 377 transitions, 6174 flow [2024-01-31 16:04:08,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 377 transitions, 6004 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:08,623 INFO L231 Difference]: Finished difference. Result has 288 places, 357 transitions, 5542 flow [2024-01-31 16:04:08,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5166, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5542, PETRI_PLACES=288, PETRI_TRANSITIONS=357} [2024-01-31 16:04:08,623 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 211 predicate places. [2024-01-31 16:04:08,623 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 357 transitions, 5542 flow [2024-01-31 16:04:08,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:08,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:08,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:08,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-01-31 16:04:08,624 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:08,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:08,624 INFO L85 PathProgramCache]: Analyzing trace with hash 948710849, now seen corresponding path program 1 times [2024-01-31 16:04:08,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:08,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875429898] [2024-01-31 16:04:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:08,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:08,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:08,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875429898] [2024-01-31 16:04:08,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875429898] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:08,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:08,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:08,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89838887] [2024-01-31 16:04:08,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:08,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:08,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:08,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:08,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:08,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:08,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 357 transitions, 5542 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:08,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:08,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:08,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:09,549 INFO L124 PetriNetUnfolderBase]: 1728/3182 cut-off events. [2024-01-31 16:04:09,549 INFO L125 PetriNetUnfolderBase]: For 46673/46829 co-relation queries the response was YES. [2024-01-31 16:04:09,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18420 conditions, 3182 events. 1728/3182 cut-off events. For 46673/46829 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 20967 event pairs, 384 based on Foata normal form. 40/3109 useless extension candidates. Maximal degree in co-relation 18320. Up to 2562 conditions per place. [2024-01-31 16:04:09,581 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 281 selfloop transitions, 63 changer transitions 0/370 dead transitions. [2024-01-31 16:04:09,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 370 transitions, 6283 flow [2024-01-31 16:04:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:09,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:09,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-01-31 16:04:09,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41682974559686886 [2024-01-31 16:04:09,582 INFO L175 Difference]: Start difference. First operand has 288 places, 357 transitions, 5542 flow. Second operand 7 states and 213 transitions. [2024-01-31 16:04:09,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 370 transitions, 6283 flow [2024-01-31 16:04:09,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 370 transitions, 6138 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:09,760 INFO L231 Difference]: Finished difference. Result has 289 places, 358 transitions, 5553 flow [2024-01-31 16:04:09,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5397, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5553, PETRI_PLACES=289, PETRI_TRANSITIONS=358} [2024-01-31 16:04:09,761 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 212 predicate places. [2024-01-31 16:04:09,761 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 358 transitions, 5553 flow [2024-01-31 16:04:09,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:09,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:09,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:09,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-01-31 16:04:09,761 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:09,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1917274705, now seen corresponding path program 1 times [2024-01-31 16:04:09,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:09,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304589333] [2024-01-31 16:04:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:09,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:10,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:10,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304589333] [2024-01-31 16:04:10,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304589333] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:10,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:10,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:10,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681674573] [2024-01-31 16:04:10,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:10,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:10,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:10,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:10,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:10,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 358 transitions, 5553 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:10,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:10,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:10,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:10,930 INFO L124 PetriNetUnfolderBase]: 1981/3578 cut-off events. [2024-01-31 16:04:10,930 INFO L125 PetriNetUnfolderBase]: For 54918/55210 co-relation queries the response was YES. [2024-01-31 16:04:10,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20583 conditions, 3578 events. 1981/3578 cut-off events. For 54918/55210 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 23332 event pairs, 424 based on Foata normal form. 91/3566 useless extension candidates. Maximal degree in co-relation 20484. Up to 2459 conditions per place. [2024-01-31 16:04:10,979 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 321 selfloop transitions, 95 changer transitions 0/442 dead transitions. [2024-01-31 16:04:10,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 442 transitions, 7084 flow [2024-01-31 16:04:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:04:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:04:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 379 transitions. [2024-01-31 16:04:10,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432648401826484 [2024-01-31 16:04:10,981 INFO L175 Difference]: Start difference. First operand has 289 places, 358 transitions, 5553 flow. Second operand 12 states and 379 transitions. [2024-01-31 16:04:10,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 442 transitions, 7084 flow [2024-01-31 16:04:11,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 442 transitions, 6967 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:11,212 INFO L231 Difference]: Finished difference. Result has 298 places, 378 transitions, 5917 flow [2024-01-31 16:04:11,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5439, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5917, PETRI_PLACES=298, PETRI_TRANSITIONS=378} [2024-01-31 16:04:11,213 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 221 predicate places. [2024-01-31 16:04:11,213 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 378 transitions, 5917 flow [2024-01-31 16:04:11,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:11,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:11,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:11,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-01-31 16:04:11,213 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:11,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2110024271, now seen corresponding path program 1 times [2024-01-31 16:04:11,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:11,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311885037] [2024-01-31 16:04:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:11,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:11,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:11,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311885037] [2024-01-31 16:04:11,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311885037] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:11,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:11,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:11,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848495359] [2024-01-31 16:04:11,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:11,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:11,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:11,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:11,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:11,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 378 transitions, 5917 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:11,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:11,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:11,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:12,398 INFO L124 PetriNetUnfolderBase]: 2154/3935 cut-off events. [2024-01-31 16:04:12,398 INFO L125 PetriNetUnfolderBase]: For 67878/68048 co-relation queries the response was YES. [2024-01-31 16:04:12,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23300 conditions, 3935 events. 2154/3935 cut-off events. For 67878/68048 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 26444 event pairs, 547 based on Foata normal form. 78/3913 useless extension candidates. Maximal degree in co-relation 23198. Up to 2530 conditions per place. [2024-01-31 16:04:12,434 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 331 selfloop transitions, 101 changer transitions 0/458 dead transitions. [2024-01-31 16:04:12,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 458 transitions, 7567 flow [2024-01-31 16:04:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:04:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:04:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2024-01-31 16:04:12,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:04:12,436 INFO L175 Difference]: Start difference. First operand has 298 places, 378 transitions, 5917 flow. Second operand 12 states and 375 transitions. [2024-01-31 16:04:12,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 458 transitions, 7567 flow [2024-01-31 16:04:12,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 458 transitions, 7461 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:12,668 INFO L231 Difference]: Finished difference. Result has 305 places, 394 transitions, 6291 flow [2024-01-31 16:04:12,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5811, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6291, PETRI_PLACES=305, PETRI_TRANSITIONS=394} [2024-01-31 16:04:12,668 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 228 predicate places. [2024-01-31 16:04:12,668 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 394 transitions, 6291 flow [2024-01-31 16:04:12,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:12,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:12,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:12,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-01-31 16:04:12,669 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:12,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:12,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1118963363, now seen corresponding path program 2 times [2024-01-31 16:04:12,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:12,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101126585] [2024-01-31 16:04:12,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:12,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:12,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:12,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101126585] [2024-01-31 16:04:12,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101126585] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:12,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:12,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:12,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545690884] [2024-01-31 16:04:12,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:12,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:12,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:12,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:12,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:12,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:12,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 394 transitions, 6291 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:12,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:12,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:12,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:13,727 INFO L124 PetriNetUnfolderBase]: 2188/3978 cut-off events. [2024-01-31 16:04:13,728 INFO L125 PetriNetUnfolderBase]: For 68565/68751 co-relation queries the response was YES. [2024-01-31 16:04:13,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24280 conditions, 3978 events. 2188/3978 cut-off events. For 68565/68751 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26656 event pairs, 509 based on Foata normal form. 58/3914 useless extension candidates. Maximal degree in co-relation 24174. Up to 3028 conditions per place. [2024-01-31 16:04:13,777 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 313 selfloop transitions, 75 changer transitions 0/414 dead transitions. [2024-01-31 16:04:13,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 414 transitions, 7156 flow [2024-01-31 16:04:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-01-31 16:04:13,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42661448140900193 [2024-01-31 16:04:13,778 INFO L175 Difference]: Start difference. First operand has 305 places, 394 transitions, 6291 flow. Second operand 7 states and 218 transitions. [2024-01-31 16:04:13,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 414 transitions, 7156 flow [2024-01-31 16:04:14,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 414 transitions, 7027 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:14,077 INFO L231 Difference]: Finished difference. Result has 308 places, 397 transitions, 6380 flow [2024-01-31 16:04:14,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6162, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6380, PETRI_PLACES=308, PETRI_TRANSITIONS=397} [2024-01-31 16:04:14,077 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 231 predicate places. [2024-01-31 16:04:14,077 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 397 transitions, 6380 flow [2024-01-31 16:04:14,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:14,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:14,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:14,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-01-31 16:04:14,078 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:14,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:14,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1508271447, now seen corresponding path program 1 times [2024-01-31 16:04:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:14,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183956674] [2024-01-31 16:04:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:14,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:14,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183956674] [2024-01-31 16:04:14,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183956674] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:14,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:14,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283488183] [2024-01-31 16:04:14,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:14,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:14,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:14,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:14,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 397 transitions, 6380 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:14,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:14,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:14,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:15,006 INFO L124 PetriNetUnfolderBase]: 1721/3370 cut-off events. [2024-01-31 16:04:15,006 INFO L125 PetriNetUnfolderBase]: For 71129/71374 co-relation queries the response was YES. [2024-01-31 16:04:15,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21207 conditions, 3370 events. 1721/3370 cut-off events. For 71129/71374 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24132 event pairs, 236 based on Foata normal form. 116/3378 useless extension candidates. Maximal degree in co-relation 21099. Up to 1115 conditions per place. [2024-01-31 16:04:15,058 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 262 selfloop transitions, 157 changer transitions 0/464 dead transitions. [2024-01-31 16:04:15,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 464 transitions, 7922 flow [2024-01-31 16:04:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:04:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:04:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 409 transitions. [2024-01-31 16:04:15,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602739726027397 [2024-01-31 16:04:15,060 INFO L175 Difference]: Start difference. First operand has 308 places, 397 transitions, 6380 flow. Second operand 10 states and 409 transitions. [2024-01-31 16:04:15,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 464 transitions, 7922 flow [2024-01-31 16:04:15,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 464 transitions, 7837 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:15,283 INFO L231 Difference]: Finished difference. Result has 316 places, 404 transitions, 6722 flow [2024-01-31 16:04:15,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6295, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6722, PETRI_PLACES=316, PETRI_TRANSITIONS=404} [2024-01-31 16:04:15,283 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 239 predicate places. [2024-01-31 16:04:15,284 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 404 transitions, 6722 flow [2024-01-31 16:04:15,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:15,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:15,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:15,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-01-31 16:04:15,284 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:15,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2146578243, now seen corresponding path program 2 times [2024-01-31 16:04:15,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:15,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495349038] [2024-01-31 16:04:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:15,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:15,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:15,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495349038] [2024-01-31 16:04:15,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495349038] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:15,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:15,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:15,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231151102] [2024-01-31 16:04:15,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:15,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:15,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:15,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:15,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:15,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:15,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 404 transitions, 6722 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:15,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:15,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:15,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:16,306 INFO L124 PetriNetUnfolderBase]: 1753/3427 cut-off events. [2024-01-31 16:04:16,306 INFO L125 PetriNetUnfolderBase]: For 75246/75477 co-relation queries the response was YES. [2024-01-31 16:04:16,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22135 conditions, 3427 events. 1753/3427 cut-off events. For 75246/75477 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 24486 event pairs, 233 based on Foata normal form. 103/3421 useless extension candidates. Maximal degree in co-relation 22026. Up to 1127 conditions per place. [2024-01-31 16:04:16,366 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 270 selfloop transitions, 160 changer transitions 0/475 dead transitions. [2024-01-31 16:04:16,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 475 transitions, 8306 flow [2024-01-31 16:04:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:04:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:04:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 483 transitions. [2024-01-31 16:04:16,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513698630136986 [2024-01-31 16:04:16,368 INFO L175 Difference]: Start difference. First operand has 316 places, 404 transitions, 6722 flow. Second operand 12 states and 483 transitions. [2024-01-31 16:04:16,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 475 transitions, 8306 flow [2024-01-31 16:04:16,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 475 transitions, 8062 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:16,632 INFO L231 Difference]: Finished difference. Result has 324 places, 407 transitions, 6862 flow [2024-01-31 16:04:16,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6494, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6862, PETRI_PLACES=324, PETRI_TRANSITIONS=407} [2024-01-31 16:04:16,633 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 247 predicate places. [2024-01-31 16:04:16,633 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 407 transitions, 6862 flow [2024-01-31 16:04:16,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:16,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:16,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:16,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-01-31 16:04:16,634 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:16,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:16,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1698023937, now seen corresponding path program 3 times [2024-01-31 16:04:16,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:16,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434766488] [2024-01-31 16:04:16,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:16,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:16,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:16,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434766488] [2024-01-31 16:04:16,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434766488] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:16,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:16,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:16,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072765879] [2024-01-31 16:04:16,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:16,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:16,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:16,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:16,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:16,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:16,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 407 transitions, 6862 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:16,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:16,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:16,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:17,834 INFO L124 PetriNetUnfolderBase]: 2391/4333 cut-off events. [2024-01-31 16:04:17,834 INFO L125 PetriNetUnfolderBase]: For 84821/85014 co-relation queries the response was YES. [2024-01-31 16:04:17,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27873 conditions, 4333 events. 2391/4333 cut-off events. For 84821/85014 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 29401 event pairs, 552 based on Foata normal form. 58/4263 useless extension candidates. Maximal degree in co-relation 27761. Up to 3348 conditions per place. [2024-01-31 16:04:17,885 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 313 selfloop transitions, 105 changer transitions 0/444 dead transitions. [2024-01-31 16:04:17,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 444 transitions, 8179 flow [2024-01-31 16:04:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-01-31 16:04:17,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-01-31 16:04:17,887 INFO L175 Difference]: Start difference. First operand has 324 places, 407 transitions, 6862 flow. Second operand 8 states and 246 transitions. [2024-01-31 16:04:17,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 444 transitions, 8179 flow [2024-01-31 16:04:18,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 444 transitions, 7854 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:18,186 INFO L231 Difference]: Finished difference. Result has 325 places, 425 transitions, 7210 flow [2024-01-31 16:04:18,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6559, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7210, PETRI_PLACES=325, PETRI_TRANSITIONS=425} [2024-01-31 16:04:18,186 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 248 predicate places. [2024-01-31 16:04:18,186 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 425 transitions, 7210 flow [2024-01-31 16:04:18,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:18,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:18,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:18,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-01-31 16:04:18,187 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:18,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:18,187 INFO L85 PathProgramCache]: Analyzing trace with hash 795892823, now seen corresponding path program 3 times [2024-01-31 16:04:18,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:18,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936147626] [2024-01-31 16:04:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:18,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:18,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:18,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936147626] [2024-01-31 16:04:18,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936147626] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:18,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:18,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:18,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028850338] [2024-01-31 16:04:18,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:18,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:18,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:18,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:18,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:18,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 425 transitions, 7210 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:18,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:18,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:18,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:19,184 INFO L124 PetriNetUnfolderBase]: 1823/3568 cut-off events. [2024-01-31 16:04:19,184 INFO L125 PetriNetUnfolderBase]: For 76735/76960 co-relation queries the response was YES. [2024-01-31 16:04:19,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23493 conditions, 3568 events. 1823/3568 cut-off events. For 76735/76960 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 25716 event pairs, 223 based on Foata normal form. 88/3537 useless extension candidates. Maximal degree in co-relation 23379. Up to 1155 conditions per place. [2024-01-31 16:04:19,222 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 233 selfloop transitions, 208 changer transitions 0/486 dead transitions. [2024-01-31 16:04:19,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 486 transitions, 8712 flow [2024-01-31 16:04:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:04:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:04:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 440 transitions. [2024-01-31 16:04:19,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-01-31 16:04:19,223 INFO L175 Difference]: Start difference. First operand has 325 places, 425 transitions, 7210 flow. Second operand 11 states and 440 transitions. [2024-01-31 16:04:19,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 486 transitions, 8712 flow [2024-01-31 16:04:19,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 486 transitions, 8588 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:19,484 INFO L231 Difference]: Finished difference. Result has 334 places, 440 transitions, 7822 flow [2024-01-31 16:04:19,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7086, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7822, PETRI_PLACES=334, PETRI_TRANSITIONS=440} [2024-01-31 16:04:19,485 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 257 predicate places. [2024-01-31 16:04:19,485 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 440 transitions, 7822 flow [2024-01-31 16:04:19,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:19,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:19,485 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] [2024-01-31 16:04:19,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-01-31 16:04:19,486 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:19,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash 915529473, now seen corresponding path program 4 times [2024-01-31 16:04:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:19,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835393090] [2024-01-31 16:04:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:19,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:19,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:19,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835393090] [2024-01-31 16:04:19,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835393090] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:19,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:19,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:19,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411159368] [2024-01-31 16:04:19,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:19,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:19,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:19,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:19,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:19,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:19,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 440 transitions, 7822 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:19,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:19,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:19,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:20,570 INFO L124 PetriNetUnfolderBase]: 2417/4383 cut-off events. [2024-01-31 16:04:20,570 INFO L125 PetriNetUnfolderBase]: For 91743/91938 co-relation queries the response was YES. [2024-01-31 16:04:20,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29251 conditions, 4383 events. 2417/4383 cut-off events. For 91743/91938 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29838 event pairs, 534 based on Foata normal form. 58/4313 useless extension candidates. Maximal degree in co-relation 29135. Up to 3394 conditions per place. [2024-01-31 16:04:20,616 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 329 selfloop transitions, 103 changer transitions 0/458 dead transitions. [2024-01-31 16:04:20,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 458 transitions, 8744 flow [2024-01-31 16:04:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-01-31 16:04:20,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-01-31 16:04:20,617 INFO L175 Difference]: Start difference. First operand has 334 places, 440 transitions, 7822 flow. Second operand 7 states and 217 transitions. [2024-01-31 16:04:20,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 458 transitions, 8744 flow [2024-01-31 16:04:20,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 458 transitions, 8341 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-01-31 16:04:20,963 INFO L231 Difference]: Finished difference. Result has 327 places, 441 transitions, 7673 flow [2024-01-31 16:04:20,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7404, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7673, PETRI_PLACES=327, PETRI_TRANSITIONS=441} [2024-01-31 16:04:20,964 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 250 predicate places. [2024-01-31 16:04:20,964 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 441 transitions, 7673 flow [2024-01-31 16:04:20,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:20,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:20,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:20,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-01-31 16:04:20,964 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:20,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1630382081, now seen corresponding path program 4 times [2024-01-31 16:04:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:20,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859787334] [2024-01-31 16:04:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:21,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:21,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859787334] [2024-01-31 16:04:21,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859787334] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:21,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:21,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:21,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250184987] [2024-01-31 16:04:21,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:21,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:21,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:21,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:21,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 441 transitions, 7673 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:21,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:21,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:21,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:22,009 INFO L124 PetriNetUnfolderBase]: 1856/3621 cut-off events. [2024-01-31 16:04:22,009 INFO L125 PetriNetUnfolderBase]: For 86278/86504 co-relation queries the response was YES. [2024-01-31 16:04:22,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24210 conditions, 3621 events. 1856/3621 cut-off events. For 86278/86504 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 26037 event pairs, 283 based on Foata normal form. 100/3600 useless extension candidates. Maximal degree in co-relation 24100. Up to 1582 conditions per place. [2024-01-31 16:04:22,068 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 264 selfloop transitions, 173 changer transitions 0/483 dead transitions. [2024-01-31 16:04:22,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 483 transitions, 8971 flow [2024-01-31 16:04:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 334 transitions. [2024-01-31 16:04:22,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571917808219178 [2024-01-31 16:04:22,069 INFO L175 Difference]: Start difference. First operand has 327 places, 441 transitions, 7673 flow. Second operand 8 states and 334 transitions. [2024-01-31 16:04:22,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 483 transitions, 8971 flow [2024-01-31 16:04:22,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 483 transitions, 8772 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:22,450 INFO L231 Difference]: Finished difference. Result has 330 places, 444 transitions, 7870 flow [2024-01-31 16:04:22,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7474, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7870, PETRI_PLACES=330, PETRI_TRANSITIONS=444} [2024-01-31 16:04:22,451 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 253 predicate places. [2024-01-31 16:04:22,451 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 444 transitions, 7870 flow [2024-01-31 16:04:22,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:22,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:22,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:22,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-01-31 16:04:22,452 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:22,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:22,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1112964419, now seen corresponding path program 5 times [2024-01-31 16:04:22,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:22,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397578937] [2024-01-31 16:04:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:22,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:22,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:22,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397578937] [2024-01-31 16:04:22,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397578937] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:22,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:22,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:22,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704084826] [2024-01-31 16:04:22,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:22,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:22,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:22,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:22,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:22,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:22,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 444 transitions, 7870 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:22,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:22,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:22,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:23,521 INFO L124 PetriNetUnfolderBase]: 1826/3582 cut-off events. [2024-01-31 16:04:23,521 INFO L125 PetriNetUnfolderBase]: For 85998/86220 co-relation queries the response was YES. [2024-01-31 16:04:23,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23917 conditions, 3582 events. 1826/3582 cut-off events. For 85998/86220 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 25811 event pairs, 270 based on Foata normal form. 105/3569 useless extension candidates. Maximal degree in co-relation 23807. Up to 1583 conditions per place. [2024-01-31 16:04:23,571 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 285 selfloop transitions, 157 changer transitions 0/488 dead transitions. [2024-01-31 16:04:23,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 488 transitions, 9210 flow [2024-01-31 16:04:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 370 transitions. [2024-01-31 16:04:23,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563165905631659 [2024-01-31 16:04:23,573 INFO L175 Difference]: Start difference. First operand has 330 places, 444 transitions, 7870 flow. Second operand 9 states and 370 transitions. [2024-01-31 16:04:23,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 488 transitions, 9210 flow [2024-01-31 16:04:23,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 488 transitions, 8950 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:23,861 INFO L231 Difference]: Finished difference. Result has 334 places, 444 transitions, 7948 flow [2024-01-31 16:04:23,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7614, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7948, PETRI_PLACES=334, PETRI_TRANSITIONS=444} [2024-01-31 16:04:23,862 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 257 predicate places. [2024-01-31 16:04:23,862 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 444 transitions, 7948 flow [2024-01-31 16:04:23,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:23,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:23,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:23,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-01-31 16:04:23,863 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:23,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1827222057, now seen corresponding path program 1 times [2024-01-31 16:04:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:23,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479461733] [2024-01-31 16:04:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:23,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:24,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:24,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479461733] [2024-01-31 16:04:24,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479461733] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:24,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:24,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:24,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522388725] [2024-01-31 16:04:24,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:24,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:24,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:24,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:24,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 444 transitions, 7948 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:24,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:24,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:24,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:25,163 INFO L124 PetriNetUnfolderBase]: 2383/4343 cut-off events. [2024-01-31 16:04:25,163 INFO L125 PetriNetUnfolderBase]: For 91198/91514 co-relation queries the response was YES. [2024-01-31 16:04:25,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28065 conditions, 4343 events. 2383/4343 cut-off events. For 91198/91514 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 29548 event pairs, 640 based on Foata normal form. 41/4267 useless extension candidates. Maximal degree in co-relation 27955. Up to 3643 conditions per place. [2024-01-31 16:04:25,207 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 376 selfloop transitions, 68 changer transitions 0/472 dead transitions. [2024-01-31 16:04:25,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 472 transitions, 8980 flow [2024-01-31 16:04:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 271 transitions. [2024-01-31 16:04:25,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124809741248097 [2024-01-31 16:04:25,210 INFO L175 Difference]: Start difference. First operand has 334 places, 444 transitions, 7948 flow. Second operand 9 states and 271 transitions. [2024-01-31 16:04:25,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 472 transitions, 8980 flow [2024-01-31 16:04:25,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 472 transitions, 8694 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:25,568 INFO L231 Difference]: Finished difference. Result has 337 places, 446 transitions, 7832 flow [2024-01-31 16:04:25,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7662, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7832, PETRI_PLACES=337, PETRI_TRANSITIONS=446} [2024-01-31 16:04:25,568 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 260 predicate places. [2024-01-31 16:04:25,569 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 446 transitions, 7832 flow [2024-01-31 16:04:25,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:25,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:25,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:25,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-01-31 16:04:25,569 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:25,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:25,570 INFO L85 PathProgramCache]: Analyzing trace with hash -687856329, now seen corresponding path program 1 times [2024-01-31 16:04:25,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:25,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934463089] [2024-01-31 16:04:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:25,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:25,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934463089] [2024-01-31 16:04:25,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934463089] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:25,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:25,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:25,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876510145] [2024-01-31 16:04:25,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:25,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:25,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:25,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:25,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:25,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:25,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 446 transitions, 7832 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:25,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:25,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:25,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:26,745 INFO L124 PetriNetUnfolderBase]: 1826/3591 cut-off events. [2024-01-31 16:04:26,745 INFO L125 PetriNetUnfolderBase]: For 82503/82722 co-relation queries the response was YES. [2024-01-31 16:04:26,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23353 conditions, 3591 events. 1826/3591 cut-off events. For 82503/82722 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 25934 event pairs, 257 based on Foata normal form. 97/3570 useless extension candidates. Maximal degree in co-relation 23242. Up to 1612 conditions per place. [2024-01-31 16:04:26,792 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 260 selfloop transitions, 182 changer transitions 0/488 dead transitions. [2024-01-31 16:04:26,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 488 transitions, 9095 flow [2024-01-31 16:04:26,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:04:26,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:04:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 400 transitions. [2024-01-31 16:04:26,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-01-31 16:04:26,793 INFO L175 Difference]: Start difference. First operand has 337 places, 446 transitions, 7832 flow. Second operand 10 states and 400 transitions. [2024-01-31 16:04:26,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 488 transitions, 9095 flow [2024-01-31 16:04:27,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 488 transitions, 9013 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:27,082 INFO L231 Difference]: Finished difference. Result has 343 places, 449 transitions, 8227 flow [2024-01-31 16:04:27,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7750, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8227, PETRI_PLACES=343, PETRI_TRANSITIONS=449} [2024-01-31 16:04:27,082 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 266 predicate places. [2024-01-31 16:04:27,082 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 449 transitions, 8227 flow [2024-01-31 16:04:27,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:27,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:27,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:27,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-01-31 16:04:27,083 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:27,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1487245647, now seen corresponding path program 2 times [2024-01-31 16:04:27,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:27,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216386207] [2024-01-31 16:04:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:27,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:27,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216386207] [2024-01-31 16:04:27,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216386207] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:27,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:27,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:27,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870338019] [2024-01-31 16:04:27,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:27,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:27,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:27,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:27,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 449 transitions, 8227 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:27,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:27,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:27,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:28,386 INFO L124 PetriNetUnfolderBase]: 2398/4354 cut-off events. [2024-01-31 16:04:28,387 INFO L125 PetriNetUnfolderBase]: For 92007/92335 co-relation queries the response was YES. [2024-01-31 16:04:28,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28557 conditions, 4354 events. 2398/4354 cut-off events. For 92007/92335 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 29575 event pairs, 621 based on Foata normal form. 53/4284 useless extension candidates. Maximal degree in co-relation 28443. Up to 3808 conditions per place. [2024-01-31 16:04:28,434 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 389 selfloop transitions, 56 changer transitions 0/473 dead transitions. [2024-01-31 16:04:28,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 473 transitions, 9226 flow [2024-01-31 16:04:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 270 transitions. [2024-01-31 16:04:28,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.410958904109589 [2024-01-31 16:04:28,436 INFO L175 Difference]: Start difference. First operand has 343 places, 449 transitions, 8227 flow. Second operand 9 states and 270 transitions. [2024-01-31 16:04:28,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 473 transitions, 9226 flow [2024-01-31 16:04:28,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 473 transitions, 8978 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:28,773 INFO L231 Difference]: Finished difference. Result has 347 places, 450 transitions, 8112 flow [2024-01-31 16:04:28,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7979, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8112, PETRI_PLACES=347, PETRI_TRANSITIONS=450} [2024-01-31 16:04:28,773 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 270 predicate places. [2024-01-31 16:04:28,773 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 450 transitions, 8112 flow [2024-01-31 16:04:28,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:28,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:28,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:28,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-01-31 16:04:28,774 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:28,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash -783691291, now seen corresponding path program 3 times [2024-01-31 16:04:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:28,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916947942] [2024-01-31 16:04:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:28,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:29,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:29,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916947942] [2024-01-31 16:04:29,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916947942] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:29,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:29,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:29,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826068962] [2024-01-31 16:04:29,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:29,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:29,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:29,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:29,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 450 transitions, 8112 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:29,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:29,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:29,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:29,949 INFO L124 PetriNetUnfolderBase]: 2388/4362 cut-off events. [2024-01-31 16:04:29,950 INFO L125 PetriNetUnfolderBase]: For 87531/87850 co-relation queries the response was YES. [2024-01-31 16:04:29,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27990 conditions, 4362 events. 2388/4362 cut-off events. For 87531/87850 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 29844 event pairs, 550 based on Foata normal form. 53/4294 useless extension candidates. Maximal degree in co-relation 27875. Up to 3212 conditions per place. [2024-01-31 16:04:30,001 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 357 selfloop transitions, 99 changer transitions 0/484 dead transitions. [2024-01-31 16:04:30,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 484 transitions, 9200 flow [2024-01-31 16:04:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2024-01-31 16:04:30,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-01-31 16:04:30,003 INFO L175 Difference]: Start difference. First operand has 347 places, 450 transitions, 8112 flow. Second operand 9 states and 279 transitions. [2024-01-31 16:04:30,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 484 transitions, 9200 flow [2024-01-31 16:04:30,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 484 transitions, 9110 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:30,437 INFO L231 Difference]: Finished difference. Result has 350 places, 452 transitions, 8253 flow [2024-01-31 16:04:30,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8022, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8253, PETRI_PLACES=350, PETRI_TRANSITIONS=452} [2024-01-31 16:04:30,438 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 273 predicate places. [2024-01-31 16:04:30,438 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 452 transitions, 8253 flow [2024-01-31 16:04:30,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:30,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:30,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:30,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-01-31 16:04:30,438 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:30,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash -752234971, now seen corresponding path program 4 times [2024-01-31 16:04:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:30,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105426639] [2024-01-31 16:04:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:30,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:30,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:30,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105426639] [2024-01-31 16:04:30,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105426639] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:30,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:30,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259839801] [2024-01-31 16:04:30,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:30,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:30,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:30,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:30,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:30,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:30,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 452 transitions, 8253 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:30,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:30,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:30,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:31,643 INFO L124 PetriNetUnfolderBase]: 2386/4351 cut-off events. [2024-01-31 16:04:31,643 INFO L125 PetriNetUnfolderBase]: For 88533/88858 co-relation queries the response was YES. [2024-01-31 16:04:31,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28156 conditions, 4351 events. 2386/4351 cut-off events. For 88533/88858 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29719 event pairs, 561 based on Foata normal form. 43/4271 useless extension candidates. Maximal degree in co-relation 28040. Up to 3212 conditions per place. [2024-01-31 16:04:31,700 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 346 selfloop transitions, 107 changer transitions 0/481 dead transitions. [2024-01-31 16:04:31,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 481 transitions, 9283 flow [2024-01-31 16:04:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2024-01-31 16:04:31,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200913242009132 [2024-01-31 16:04:31,701 INFO L175 Difference]: Start difference. First operand has 350 places, 452 transitions, 8253 flow. Second operand 9 states and 276 transitions. [2024-01-31 16:04:31,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 481 transitions, 9283 flow [2024-01-31 16:04:32,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 481 transitions, 9135 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:32,058 INFO L231 Difference]: Finished difference. Result has 354 places, 452 transitions, 8325 flow [2024-01-31 16:04:32,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8105, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8325, PETRI_PLACES=354, PETRI_TRANSITIONS=452} [2024-01-31 16:04:32,058 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 277 predicate places. [2024-01-31 16:04:32,058 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 452 transitions, 8325 flow [2024-01-31 16:04:32,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:32,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:32,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:32,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-01-31 16:04:32,059 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:32,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2145464523, now seen corresponding path program 6 times [2024-01-31 16:04:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:32,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366941740] [2024-01-31 16:04:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:32,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:32,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:32,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366941740] [2024-01-31 16:04:32,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366941740] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:32,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:32,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:32,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436170703] [2024-01-31 16:04:32,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:32,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:32,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:32,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:32,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:32,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:32,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 452 transitions, 8325 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:32,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:32,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:32,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:33,078 INFO L124 PetriNetUnfolderBase]: 1806/3553 cut-off events. [2024-01-31 16:04:33,079 INFO L125 PetriNetUnfolderBase]: For 86476/86697 co-relation queries the response was YES. [2024-01-31 16:04:33,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23674 conditions, 3553 events. 1806/3553 cut-off events. For 86476/86697 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 25749 event pairs, 249 based on Foata normal form. 104/3531 useless extension candidates. Maximal degree in co-relation 23557. Up to 1633 conditions per place. [2024-01-31 16:04:33,124 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 289 selfloop transitions, 159 changer transitions 0/494 dead transitions. [2024-01-31 16:04:33,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 494 transitions, 9580 flow [2024-01-31 16:04:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 368 transitions. [2024-01-31 16:04:33,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601217656012176 [2024-01-31 16:04:33,125 INFO L175 Difference]: Start difference. First operand has 354 places, 452 transitions, 8325 flow. Second operand 9 states and 368 transitions. [2024-01-31 16:04:33,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 494 transitions, 9580 flow [2024-01-31 16:04:33,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 494 transitions, 9437 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:33,414 INFO L231 Difference]: Finished difference. Result has 357 places, 452 transitions, 8522 flow [2024-01-31 16:04:33,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8182, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8522, PETRI_PLACES=357, PETRI_TRANSITIONS=452} [2024-01-31 16:04:33,414 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 280 predicate places. [2024-01-31 16:04:33,414 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 452 transitions, 8522 flow [2024-01-31 16:04:33,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:33,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:33,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:33,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-01-31 16:04:33,415 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:33,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1868462785, now seen corresponding path program 7 times [2024-01-31 16:04:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596723649] [2024-01-31 16:04:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:33,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:33,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:33,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596723649] [2024-01-31 16:04:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596723649] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:33,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299808965] [2024-01-31 16:04:33,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:33,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:33,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:33,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:33,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:33,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 452 transitions, 8522 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:33,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:33,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:33,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:34,433 INFO L124 PetriNetUnfolderBase]: 1811/3575 cut-off events. [2024-01-31 16:04:34,433 INFO L125 PetriNetUnfolderBase]: For 88310/88528 co-relation queries the response was YES. [2024-01-31 16:04:34,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23981 conditions, 3575 events. 1811/3575 cut-off events. For 88310/88528 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 26030 event pairs, 222 based on Foata normal form. 101/3553 useless extension candidates. Maximal degree in co-relation 23863. Up to 1111 conditions per place. [2024-01-31 16:04:34,475 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 271 selfloop transitions, 190 changer transitions 0/507 dead transitions. [2024-01-31 16:04:34,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 507 transitions, 9929 flow [2024-01-31 16:04:34,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:04:34,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:04:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 406 transitions. [2024-01-31 16:04:34,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561643835616439 [2024-01-31 16:04:34,476 INFO L175 Difference]: Start difference. First operand has 357 places, 452 transitions, 8522 flow. Second operand 10 states and 406 transitions. [2024-01-31 16:04:34,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 507 transitions, 9929 flow [2024-01-31 16:04:34,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 507 transitions, 9639 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:34,813 INFO L231 Difference]: Finished difference. Result has 361 places, 460 transitions, 8763 flow [2024-01-31 16:04:34,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8232, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8763, PETRI_PLACES=361, PETRI_TRANSITIONS=460} [2024-01-31 16:04:34,814 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 284 predicate places. [2024-01-31 16:04:34,814 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 460 transitions, 8763 flow [2024-01-31 16:04:34,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:34,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:34,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:34,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-01-31 16:04:34,814 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:34,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:34,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1249175017, now seen corresponding path program 2 times [2024-01-31 16:04:34,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:34,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691470774] [2024-01-31 16:04:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:34,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:34,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691470774] [2024-01-31 16:04:34,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691470774] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:34,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:34,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:34,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311059197] [2024-01-31 16:04:34,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:34,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:34,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:34,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:34,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:34,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:34,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 460 transitions, 8763 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:34,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:34,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:34,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:36,018 INFO L124 PetriNetUnfolderBase]: 1843/3639 cut-off events. [2024-01-31 16:04:36,018 INFO L125 PetriNetUnfolderBase]: For 87560/87778 co-relation queries the response was YES. [2024-01-31 16:04:36,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24643 conditions, 3639 events. 1843/3639 cut-off events. For 87560/87778 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26534 event pairs, 222 based on Foata normal form. 89/3605 useless extension candidates. Maximal degree in co-relation 24523. Up to 1123 conditions per place. [2024-01-31 16:04:36,068 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 277 selfloop transitions, 195 changer transitions 0/518 dead transitions. [2024-01-31 16:04:36,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 518 transitions, 10198 flow [2024-01-31 16:04:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:04:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:04:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 480 transitions. [2024-01-31 16:04:36,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-01-31 16:04:36,070 INFO L175 Difference]: Start difference. First operand has 361 places, 460 transitions, 8763 flow. Second operand 12 states and 480 transitions. [2024-01-31 16:04:36,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 518 transitions, 10198 flow [2024-01-31 16:04:36,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 518 transitions, 9534 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-01-31 16:04:36,463 INFO L231 Difference]: Finished difference. Result has 363 places, 463 transitions, 8569 flow [2024-01-31 16:04:36,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8123, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8569, PETRI_PLACES=363, PETRI_TRANSITIONS=463} [2024-01-31 16:04:36,463 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 286 predicate places. [2024-01-31 16:04:36,463 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 463 transitions, 8569 flow [2024-01-31 16:04:36,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:36,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:36,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:36,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-01-31 16:04:36,464 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:36,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:36,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2070646359, now seen corresponding path program 3 times [2024-01-31 16:04:36,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:36,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181943924] [2024-01-31 16:04:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:36,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:36,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181943924] [2024-01-31 16:04:36,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181943924] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:36,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:36,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130231606] [2024-01-31 16:04:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:36,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:36,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:36,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 463 transitions, 8569 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:36,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:36,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:36,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:37,644 INFO L124 PetriNetUnfolderBase]: 1842/3633 cut-off events. [2024-01-31 16:04:37,644 INFO L125 PetriNetUnfolderBase]: For 83862/84079 co-relation queries the response was YES. [2024-01-31 16:04:37,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23178 conditions, 3633 events. 1842/3633 cut-off events. For 83862/84079 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 26420 event pairs, 208 based on Foata normal form. 68/3575 useless extension candidates. Maximal degree in co-relation 23060. Up to 1127 conditions per place. [2024-01-31 16:04:37,689 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 231 selfloop transitions, 228 changer transitions 0/505 dead transitions. [2024-01-31 16:04:37,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 505 transitions, 9744 flow [2024-01-31 16:04:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:04:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:04:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 434 transitions. [2024-01-31 16:04:37,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404732254047323 [2024-01-31 16:04:37,690 INFO L175 Difference]: Start difference. First operand has 363 places, 463 transitions, 8569 flow. Second operand 11 states and 434 transitions. [2024-01-31 16:04:37,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 505 transitions, 9744 flow [2024-01-31 16:04:37,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 505 transitions, 9028 flow, removed 6 selfloop flow, removed 27 redundant places. [2024-01-31 16:04:38,001 INFO L231 Difference]: Finished difference. Result has 345 places, 463 transitions, 8265 flow [2024-01-31 16:04:38,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7801, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8265, PETRI_PLACES=345, PETRI_TRANSITIONS=463} [2024-01-31 16:04:38,002 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 268 predicate places. [2024-01-31 16:04:38,002 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 463 transitions, 8265 flow [2024-01-31 16:04:38,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:38,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:38,003 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] [2024-01-31 16:04:38,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-01-31 16:04:38,003 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:38,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:38,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2086887115, now seen corresponding path program 2 times [2024-01-31 16:04:38,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:38,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273348296] [2024-01-31 16:04:38,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:38,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:38,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:38,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273348296] [2024-01-31 16:04:38,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273348296] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:38,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:38,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772994594] [2024-01-31 16:04:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:38,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:38,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:38,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:38,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:38,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:38,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 463 transitions, 8265 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:38,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:38,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:38,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:39,246 INFO L124 PetriNetUnfolderBase]: 2471/4534 cut-off events. [2024-01-31 16:04:39,246 INFO L125 PetriNetUnfolderBase]: For 84386/84558 co-relation queries the response was YES. [2024-01-31 16:04:39,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27329 conditions, 4534 events. 2471/4534 cut-off events. For 84386/84558 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 31334 event pairs, 230 based on Foata normal form. 56/4472 useless extension candidates. Maximal degree in co-relation 27230. Up to 1714 conditions per place. [2024-01-31 16:04:39,300 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 318 selfloop transitions, 202 changer transitions 0/546 dead transitions. [2024-01-31 16:04:39,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 546 transitions, 9976 flow [2024-01-31 16:04:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:04:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:04:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 387 transitions. [2024-01-31 16:04:39,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-01-31 16:04:39,302 INFO L175 Difference]: Start difference. First operand has 345 places, 463 transitions, 8265 flow. Second operand 12 states and 387 transitions. [2024-01-31 16:04:39,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 546 transitions, 9976 flow [2024-01-31 16:04:39,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 546 transitions, 9454 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:39,610 INFO L231 Difference]: Finished difference. Result has 350 places, 479 transitions, 8366 flow [2024-01-31 16:04:39,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7757, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8366, PETRI_PLACES=350, PETRI_TRANSITIONS=479} [2024-01-31 16:04:39,611 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 273 predicate places. [2024-01-31 16:04:39,611 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 479 transitions, 8366 flow [2024-01-31 16:04:39,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:39,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:39,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:39,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-01-31 16:04:39,611 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:39,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2002065793, now seen corresponding path program 3 times [2024-01-31 16:04:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:39,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012036835] [2024-01-31 16:04:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:39,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:39,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:39,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012036835] [2024-01-31 16:04:39,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012036835] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:39,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:39,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:39,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821906900] [2024-01-31 16:04:39,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:39,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:39,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:39,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:39,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:39,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:39,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 479 transitions, 8366 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:39,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:39,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:39,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:41,007 INFO L124 PetriNetUnfolderBase]: 2459/4514 cut-off events. [2024-01-31 16:04:41,007 INFO L125 PetriNetUnfolderBase]: For 85651/85853 co-relation queries the response was YES. [2024-01-31 16:04:41,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28104 conditions, 4514 events. 2459/4514 cut-off events. For 85651/85853 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 31143 event pairs, 230 based on Foata normal form. 62/4464 useless extension candidates. Maximal degree in co-relation 28003. Up to 1710 conditions per place. [2024-01-31 16:04:41,049 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 326 selfloop transitions, 202 changer transitions 0/554 dead transitions. [2024-01-31 16:04:41,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 554 transitions, 10014 flow [2024-01-31 16:04:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 16:04:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 16:04:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 442 transitions. [2024-01-31 16:04:41,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-01-31 16:04:41,051 INFO L175 Difference]: Start difference. First operand has 350 places, 479 transitions, 8366 flow. Second operand 14 states and 442 transitions. [2024-01-31 16:04:41,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 554 transitions, 10014 flow [2024-01-31 16:04:41,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 554 transitions, 9680 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-01-31 16:04:41,315 INFO L231 Difference]: Finished difference. Result has 355 places, 479 transitions, 8444 flow [2024-01-31 16:04:41,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8032, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8444, PETRI_PLACES=355, PETRI_TRANSITIONS=479} [2024-01-31 16:04:41,315 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 278 predicate places. [2024-01-31 16:04:41,316 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 479 transitions, 8444 flow [2024-01-31 16:04:41,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:41,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:41,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:41,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-01-31 16:04:41,316 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:41,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:41,316 INFO L85 PathProgramCache]: Analyzing trace with hash 844460735, now seen corresponding path program 4 times [2024-01-31 16:04:41,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:41,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808652829] [2024-01-31 16:04:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:41,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:41,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:41,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808652829] [2024-01-31 16:04:41,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808652829] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:41,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:41,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:41,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104374254] [2024-01-31 16:04:41,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:41,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:41,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:41,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:41,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 479 transitions, 8444 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:41,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:41,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:41,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:42,635 INFO L124 PetriNetUnfolderBase]: 2615/4810 cut-off events. [2024-01-31 16:04:42,635 INFO L125 PetriNetUnfolderBase]: For 91896/92092 co-relation queries the response was YES. [2024-01-31 16:04:42,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29745 conditions, 4810 events. 2615/4810 cut-off events. For 91896/92092 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 33571 event pairs, 210 based on Foata normal form. 56/4748 useless extension candidates. Maximal degree in co-relation 29643. Up to 1766 conditions per place. [2024-01-31 16:04:42,681 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 294 selfloop transitions, 238 changer transitions 0/558 dead transitions. [2024-01-31 16:04:42,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 558 transitions, 10228 flow [2024-01-31 16:04:42,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:04:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:04:42,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 411 transitions. [2024-01-31 16:04:42,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43308746048472074 [2024-01-31 16:04:42,682 INFO L175 Difference]: Start difference. First operand has 355 places, 479 transitions, 8444 flow. Second operand 13 states and 411 transitions. [2024-01-31 16:04:42,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 558 transitions, 10228 flow [2024-01-31 16:04:43,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 558 transitions, 9870 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-01-31 16:04:43,012 INFO L231 Difference]: Finished difference. Result has 358 places, 493 transitions, 8855 flow [2024-01-31 16:04:43,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8104, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8855, PETRI_PLACES=358, PETRI_TRANSITIONS=493} [2024-01-31 16:04:43,012 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 281 predicate places. [2024-01-31 16:04:43,012 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 493 transitions, 8855 flow [2024-01-31 16:04:43,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:43,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:43,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:43,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-01-31 16:04:43,013 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:43,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1013762529, now seen corresponding path program 5 times [2024-01-31 16:04:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:43,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49192818] [2024-01-31 16:04:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:43,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:43,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:43,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49192818] [2024-01-31 16:04:43,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49192818] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:43,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:43,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:43,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438360874] [2024-01-31 16:04:43,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:43,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:43,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:43,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:43,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:43,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:43,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 493 transitions, 8855 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:43,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:43,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:43,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:44,523 INFO L124 PetriNetUnfolderBase]: 2711/4948 cut-off events. [2024-01-31 16:04:44,523 INFO L125 PetriNetUnfolderBase]: For 99169/99365 co-relation queries the response was YES. [2024-01-31 16:04:44,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31285 conditions, 4948 events. 2711/4948 cut-off events. For 99169/99365 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34376 event pairs, 222 based on Foata normal form. 56/4886 useless extension candidates. Maximal degree in co-relation 31181. Up to 1798 conditions per place. [2024-01-31 16:04:44,572 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 288 selfloop transitions, 249 changer transitions 0/563 dead transitions. [2024-01-31 16:04:44,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 563 transitions, 10482 flow [2024-01-31 16:04:44,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:04:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:04:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 405 transitions. [2024-01-31 16:04:44,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267650158061117 [2024-01-31 16:04:44,573 INFO L175 Difference]: Start difference. First operand has 358 places, 493 transitions, 8855 flow. Second operand 13 states and 405 transitions. [2024-01-31 16:04:44,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 563 transitions, 10482 flow [2024-01-31 16:04:44,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 563 transitions, 10150 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:44,929 INFO L231 Difference]: Finished difference. Result has 364 places, 503 transitions, 9200 flow [2024-01-31 16:04:44,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8529, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9200, PETRI_PLACES=364, PETRI_TRANSITIONS=503} [2024-01-31 16:04:44,930 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-01-31 16:04:44,930 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 503 transitions, 9200 flow [2024-01-31 16:04:44,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:44,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:44,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:44,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-01-31 16:04:44,931 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:44,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:44,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1057719329, now seen corresponding path program 2 times [2024-01-31 16:04:44,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:44,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573967209] [2024-01-31 16:04:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:45,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:45,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573967209] [2024-01-31 16:04:45,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573967209] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:45,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:45,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:45,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277995593] [2024-01-31 16:04:45,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:45,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:45,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:45,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:45,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 503 transitions, 9200 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:45,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:45,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:45,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:46,383 INFO L124 PetriNetUnfolderBase]: 2701/4929 cut-off events. [2024-01-31 16:04:46,383 INFO L125 PetriNetUnfolderBase]: For 108522/109121 co-relation queries the response was YES. [2024-01-31 16:04:46,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32545 conditions, 4929 events. 2701/4929 cut-off events. For 108522/109121 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34168 event pairs, 397 based on Foata normal form. 81/4874 useless extension candidates. Maximal degree in co-relation 32439. Up to 1971 conditions per place. [2024-01-31 16:04:46,441 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 345 selfloop transitions, 189 changer transitions 0/568 dead transitions. [2024-01-31 16:04:46,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 568 transitions, 10710 flow [2024-01-31 16:04:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:04:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:04:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 377 transitions. [2024-01-31 16:04:46,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430365296803653 [2024-01-31 16:04:46,443 INFO L175 Difference]: Start difference. First operand has 364 places, 503 transitions, 9200 flow. Second operand 12 states and 377 transitions. [2024-01-31 16:04:46,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 568 transitions, 10710 flow [2024-01-31 16:04:46,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 568 transitions, 10175 flow, removed 26 selfloop flow, removed 12 redundant places. [2024-01-31 16:04:46,844 INFO L231 Difference]: Finished difference. Result has 364 places, 503 transitions, 9078 flow [2024-01-31 16:04:46,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8685, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9078, PETRI_PLACES=364, PETRI_TRANSITIONS=503} [2024-01-31 16:04:46,845 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-01-31 16:04:46,845 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 503 transitions, 9078 flow [2024-01-31 16:04:46,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:46,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:46,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:46,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-01-31 16:04:46,846 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:46,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1483693307, now seen corresponding path program 6 times [2024-01-31 16:04:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:46,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443665296] [2024-01-31 16:04:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:46,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:47,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:47,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443665296] [2024-01-31 16:04:47,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443665296] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:47,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:47,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:47,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145102650] [2024-01-31 16:04:47,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:47,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:47,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:47,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:47,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:47,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:47,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 503 transitions, 9078 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:47,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:47,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:47,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:48,220 INFO L124 PetriNetUnfolderBase]: 2627/4827 cut-off events. [2024-01-31 16:04:48,220 INFO L125 PetriNetUnfolderBase]: For 100509/100693 co-relation queries the response was YES. [2024-01-31 16:04:48,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31034 conditions, 4827 events. 2627/4827 cut-off events. For 100509/100693 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 33748 event pairs, 406 based on Foata normal form. 68/4789 useless extension candidates. Maximal degree in co-relation 30928. Up to 2428 conditions per place. [2024-01-31 16:04:48,280 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 361 selfloop transitions, 170 changer transitions 0/557 dead transitions. [2024-01-31 16:04:48,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 557 transitions, 10633 flow [2024-01-31 16:04:48,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:04:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:04:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 319 transitions. [2024-01-31 16:04:48,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436986301369863 [2024-01-31 16:04:48,281 INFO L175 Difference]: Start difference. First operand has 364 places, 503 transitions, 9078 flow. Second operand 10 states and 319 transitions. [2024-01-31 16:04:48,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 557 transitions, 10633 flow [2024-01-31 16:04:48,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 557 transitions, 10255 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-01-31 16:04:48,641 INFO L231 Difference]: Finished difference. Result has 363 places, 503 transitions, 9068 flow [2024-01-31 16:04:48,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8700, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9068, PETRI_PLACES=363, PETRI_TRANSITIONS=503} [2024-01-31 16:04:48,641 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 286 predicate places. [2024-01-31 16:04:48,641 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 503 transitions, 9068 flow [2024-01-31 16:04:48,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:48,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:48,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:48,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-01-31 16:04:48,642 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:48,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:48,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1437185319, now seen corresponding path program 7 times [2024-01-31 16:04:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:48,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758848310] [2024-01-31 16:04:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:48,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:48,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:48,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758848310] [2024-01-31 16:04:48,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758848310] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:48,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:48,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:48,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314152146] [2024-01-31 16:04:48,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:48,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:48,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:48,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:48,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 503 transitions, 9068 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:48,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:48,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:48,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:50,157 INFO L124 PetriNetUnfolderBase]: 2585/4757 cut-off events. [2024-01-31 16:04:50,157 INFO L125 PetriNetUnfolderBase]: For 100492/100676 co-relation queries the response was YES. [2024-01-31 16:04:50,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30590 conditions, 4757 events. 2585/4757 cut-off events. For 100492/100676 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 33331 event pairs, 384 based on Foata normal form. 64/4715 useless extension candidates. Maximal degree in co-relation 30483. Up to 2414 conditions per place. [2024-01-31 16:04:50,198 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 363 selfloop transitions, 170 changer transitions 0/559 dead transitions. [2024-01-31 16:04:50,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 559 transitions, 10637 flow [2024-01-31 16:04:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:04:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:04:50,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 345 transitions. [2024-01-31 16:04:50,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42963885429638854 [2024-01-31 16:04:50,199 INFO L175 Difference]: Start difference. First operand has 363 places, 503 transitions, 9068 flow. Second operand 11 states and 345 transitions. [2024-01-31 16:04:50,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 559 transitions, 10637 flow [2024-01-31 16:04:50,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 559 transitions, 10306 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:50,489 INFO L231 Difference]: Finished difference. Result has 366 places, 503 transitions, 9113 flow [2024-01-31 16:04:50,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8737, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9113, PETRI_PLACES=366, PETRI_TRANSITIONS=503} [2024-01-31 16:04:50,489 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 289 predicate places. [2024-01-31 16:04:50,489 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 503 transitions, 9113 flow [2024-01-31 16:04:50,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:50,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:50,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:50,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-01-31 16:04:50,490 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:50,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:50,490 INFO L85 PathProgramCache]: Analyzing trace with hash 232496905, now seen corresponding path program 3 times [2024-01-31 16:04:50,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:50,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873102522] [2024-01-31 16:04:50,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:50,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:50,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:50,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873102522] [2024-01-31 16:04:50,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873102522] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:50,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:50,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:50,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303930319] [2024-01-31 16:04:50,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:50,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:50,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:50,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:50,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:50,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:50,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 503 transitions, 9113 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:50,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:50,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:50,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:51,919 INFO L124 PetriNetUnfolderBase]: 2605/4751 cut-off events. [2024-01-31 16:04:51,919 INFO L125 PetriNetUnfolderBase]: For 105083/105676 co-relation queries the response was YES. [2024-01-31 16:04:51,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31067 conditions, 4751 events. 2605/4751 cut-off events. For 105083/105676 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 33018 event pairs, 519 based on Foata normal form. 77/4675 useless extension candidates. Maximal degree in co-relation 30959. Up to 3452 conditions per place. [2024-01-31 16:04:51,979 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 428 selfloop transitions, 110 changer transitions 0/572 dead transitions. [2024-01-31 16:04:51,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 572 transitions, 10709 flow [2024-01-31 16:04:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:04:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:04:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 398 transitions. [2024-01-31 16:04:51,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41938883034773444 [2024-01-31 16:04:51,980 INFO L175 Difference]: Start difference. First operand has 366 places, 503 transitions, 9113 flow. Second operand 13 states and 398 transitions. [2024-01-31 16:04:51,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 572 transitions, 10709 flow [2024-01-31 16:04:52,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 572 transitions, 10382 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-01-31 16:04:52,341 INFO L231 Difference]: Finished difference. Result has 369 places, 503 transitions, 9028 flow [2024-01-31 16:04:52,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8790, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9028, PETRI_PLACES=369, PETRI_TRANSITIONS=503} [2024-01-31 16:04:52,342 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 292 predicate places. [2024-01-31 16:04:52,342 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 503 transitions, 9028 flow [2024-01-31 16:04:52,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:52,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:52,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:52,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-01-31 16:04:52,342 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:52,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:52,343 INFO L85 PathProgramCache]: Analyzing trace with hash -175585699, now seen corresponding path program 8 times [2024-01-31 16:04:52,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:52,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110407857] [2024-01-31 16:04:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:52,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:52,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:52,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110407857] [2024-01-31 16:04:52,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110407857] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:52,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:52,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:52,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700108916] [2024-01-31 16:04:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:52,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:52,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:52,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 503 transitions, 9028 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:52,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:52,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:52,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:53,819 INFO L124 PetriNetUnfolderBase]: 2525/4657 cut-off events. [2024-01-31 16:04:53,819 INFO L125 PetriNetUnfolderBase]: For 97001/97185 co-relation queries the response was YES. [2024-01-31 16:04:53,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29734 conditions, 4657 events. 2525/4657 cut-off events. For 97001/97185 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 32527 event pairs, 380 based on Foata normal form. 68/4619 useless extension candidates. Maximal degree in co-relation 29626. Up to 2394 conditions per place. [2024-01-31 16:04:53,866 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 339 selfloop transitions, 182 changer transitions 0/547 dead transitions. [2024-01-31 16:04:53,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 547 transitions, 10420 flow [2024-01-31 16:04:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:04:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:04:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 315 transitions. [2024-01-31 16:04:53,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-01-31 16:04:53,867 INFO L175 Difference]: Start difference. First operand has 369 places, 503 transitions, 9028 flow. Second operand 10 states and 315 transitions. [2024-01-31 16:04:53,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 547 transitions, 10420 flow [2024-01-31 16:04:54,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 547 transitions, 10107 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-01-31 16:04:54,190 INFO L231 Difference]: Finished difference. Result has 366 places, 503 transitions, 9095 flow [2024-01-31 16:04:54,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8715, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9095, PETRI_PLACES=366, PETRI_TRANSITIONS=503} [2024-01-31 16:04:54,191 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 289 predicate places. [2024-01-31 16:04:54,191 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 503 transitions, 9095 flow [2024-01-31 16:04:54,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:54,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:54,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:54,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-01-31 16:04:54,191 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:54,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash 233390635, now seen corresponding path program 4 times [2024-01-31 16:04:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:54,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424876309] [2024-01-31 16:04:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:54,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:54,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424876309] [2024-01-31 16:04:54,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424876309] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:54,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:54,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:54,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925804363] [2024-01-31 16:04:54,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:54,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:54,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:54,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:54,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:54,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:54,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 503 transitions, 9095 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:54,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:54,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:54,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:55,619 INFO L124 PetriNetUnfolderBase]: 2541/4647 cut-off events. [2024-01-31 16:04:55,620 INFO L125 PetriNetUnfolderBase]: For 100069/100656 co-relation queries the response was YES. [2024-01-31 16:04:55,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30232 conditions, 4647 events. 2541/4647 cut-off events. For 100069/100656 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32287 event pairs, 505 based on Foata normal form. 81/4574 useless extension candidates. Maximal degree in co-relation 30123. Up to 3398 conditions per place. [2024-01-31 16:04:55,678 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 414 selfloop transitions, 116 changer transitions 0/564 dead transitions. [2024-01-31 16:04:55,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 564 transitions, 10519 flow [2024-01-31 16:04:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 16:04:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 16:04:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 417 transitions. [2024-01-31 16:04:55,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080234833659491 [2024-01-31 16:04:55,679 INFO L175 Difference]: Start difference. First operand has 366 places, 503 transitions, 9095 flow. Second operand 14 states and 417 transitions. [2024-01-31 16:04:55,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 564 transitions, 10519 flow [2024-01-31 16:04:56,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 564 transitions, 10118 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-01-31 16:04:56,049 INFO L231 Difference]: Finished difference. Result has 370 places, 503 transitions, 8938 flow [2024-01-31 16:04:56,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8694, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8938, PETRI_PLACES=370, PETRI_TRANSITIONS=503} [2024-01-31 16:04:56,049 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 293 predicate places. [2024-01-31 16:04:56,050 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 503 transitions, 8938 flow [2024-01-31 16:04:56,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:56,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:56,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:56,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-01-31 16:04:56,052 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:56,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:56,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1872227441, now seen corresponding path program 5 times [2024-01-31 16:04:56,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:56,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808390314] [2024-01-31 16:04:56,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:56,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:56,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:56,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808390314] [2024-01-31 16:04:56,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808390314] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:56,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:56,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:56,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570846592] [2024-01-31 16:04:56,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:56,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:56,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:56,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:56,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:56,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 503 transitions, 8938 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:56,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:56,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:56,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:57,586 INFO L124 PetriNetUnfolderBase]: 2857/5189 cut-off events. [2024-01-31 16:04:57,587 INFO L125 PetriNetUnfolderBase]: For 106797/107403 co-relation queries the response was YES. [2024-01-31 16:04:57,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32889 conditions, 5189 events. 2857/5189 cut-off events. For 106797/107403 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 36477 event pairs, 567 based on Foata normal form. 97/5117 useless extension candidates. Maximal degree in co-relation 32779. Up to 3912 conditions per place. [2024-01-31 16:04:57,653 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 469 selfloop transitions, 100 changer transitions 0/603 dead transitions. [2024-01-31 16:04:57,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 603 transitions, 11115 flow [2024-01-31 16:04:57,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:04:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:04:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 373 transitions. [2024-01-31 16:04:57,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2024-01-31 16:04:57,654 INFO L175 Difference]: Start difference. First operand has 370 places, 503 transitions, 8938 flow. Second operand 12 states and 373 transitions. [2024-01-31 16:04:57,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 603 transitions, 11115 flow [2024-01-31 16:04:58,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 603 transitions, 10959 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:58,071 INFO L231 Difference]: Finished difference. Result has 377 places, 533 transitions, 9591 flow [2024-01-31 16:04:58,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8782, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9591, PETRI_PLACES=377, PETRI_TRANSITIONS=533} [2024-01-31 16:04:58,072 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 300 predicate places. [2024-01-31 16:04:58,072 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 533 transitions, 9591 flow [2024-01-31 16:04:58,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:58,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:58,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:58,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-01-31 16:04:58,073 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:58,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:58,073 INFO L85 PathProgramCache]: Analyzing trace with hash 351515479, now seen corresponding path program 9 times [2024-01-31 16:04:58,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:58,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920847514] [2024-01-31 16:04:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:58,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:58,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920847514] [2024-01-31 16:04:58,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920847514] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:58,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:58,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:58,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173166056] [2024-01-31 16:04:58,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:58,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:04:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:04:58,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:04:58,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:58,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 533 transitions, 9591 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:58,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:58,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:58,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:59,763 INFO L124 PetriNetUnfolderBase]: 2793/5139 cut-off events. [2024-01-31 16:04:59,763 INFO L125 PetriNetUnfolderBase]: For 105115/105302 co-relation queries the response was YES. [2024-01-31 16:04:59,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32509 conditions, 5139 events. 2793/5139 cut-off events. For 105115/105302 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 36390 event pairs, 398 based on Foata normal form. 44/5077 useless extension candidates. Maximal degree in co-relation 32395. Up to 1766 conditions per place. [2024-01-31 16:04:59,827 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 339 selfloop transitions, 231 changer transitions 0/596 dead transitions. [2024-01-31 16:04:59,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 596 transitions, 11279 flow [2024-01-31 16:04:59,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:04:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:04:59,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2024-01-31 16:04:59,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:04:59,828 INFO L175 Difference]: Start difference. First operand has 377 places, 533 transitions, 9591 flow. Second operand 12 states and 375 transitions. [2024-01-31 16:04:59,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 596 transitions, 11279 flow [2024-01-31 16:05:00,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 596 transitions, 11158 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:00,359 INFO L231 Difference]: Finished difference. Result has 383 places, 533 transitions, 9948 flow [2024-01-31 16:05:00,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9470, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9948, PETRI_PLACES=383, PETRI_TRANSITIONS=533} [2024-01-31 16:05:00,359 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 306 predicate places. [2024-01-31 16:05:00,359 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 533 transitions, 9948 flow [2024-01-31 16:05:00,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:00,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:00,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:00,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-01-31 16:05:00,360 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:00,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:00,360 INFO L85 PathProgramCache]: Analyzing trace with hash 825060203, now seen corresponding path program 6 times [2024-01-31 16:05:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785979185] [2024-01-31 16:05:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:00,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:00,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:00,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785979185] [2024-01-31 16:05:00,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785979185] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:00,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:00,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350415870] [2024-01-31 16:05:00,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:00,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:00,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:00,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:00,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 533 transitions, 9948 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:00,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:00,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:00,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:01,918 INFO L124 PetriNetUnfolderBase]: 2829/5135 cut-off events. [2024-01-31 16:05:01,918 INFO L125 PetriNetUnfolderBase]: For 120930/121538 co-relation queries the response was YES. [2024-01-31 16:05:01,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33932 conditions, 5135 events. 2829/5135 cut-off events. For 120930/121538 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36060 event pairs, 563 based on Foata normal form. 101/5067 useless extension candidates. Maximal degree in co-relation 33817. Up to 3886 conditions per place. [2024-01-31 16:05:01,978 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 458 selfloop transitions, 104 changer transitions 0/596 dead transitions. [2024-01-31 16:05:01,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 596 transitions, 11522 flow [2024-01-31 16:05:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:05:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:05:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 371 transitions. [2024-01-31 16:05:01,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235159817351598 [2024-01-31 16:05:01,979 INFO L175 Difference]: Start difference. First operand has 383 places, 533 transitions, 9948 flow. Second operand 12 states and 371 transitions. [2024-01-31 16:05:01,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 596 transitions, 11522 flow [2024-01-31 16:05:02,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 596 transitions, 11063 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-01-31 16:05:02,405 INFO L231 Difference]: Finished difference. Result has 386 places, 535 transitions, 9776 flow [2024-01-31 16:05:02,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9489, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9776, PETRI_PLACES=386, PETRI_TRANSITIONS=535} [2024-01-31 16:05:02,405 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 309 predicate places. [2024-01-31 16:05:02,405 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 535 transitions, 9776 flow [2024-01-31 16:05:02,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:02,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:02,406 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] [2024-01-31 16:05:02,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-01-31 16:05:02,406 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:02,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:02,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1811906311, now seen corresponding path program 7 times [2024-01-31 16:05:02,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:02,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287561238] [2024-01-31 16:05:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:02,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:02,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:02,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287561238] [2024-01-31 16:05:02,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287561238] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:02,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:02,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389476263] [2024-01-31 16:05:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:02,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:02,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:02,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:02,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 535 transitions, 9776 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:02,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:02,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:02,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:03,981 INFO L124 PetriNetUnfolderBase]: 2899/5301 cut-off events. [2024-01-31 16:05:03,981 INFO L125 PetriNetUnfolderBase]: For 116010/116618 co-relation queries the response was YES. [2024-01-31 16:05:04,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33856 conditions, 5301 events. 2899/5301 cut-off events. For 116010/116618 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37657 event pairs, 452 based on Foata normal form. 97/5250 useless extension candidates. Maximal degree in co-relation 33738. Up to 2650 conditions per place. [2024-01-31 16:05:04,048 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 394 selfloop transitions, 188 changer transitions 0/616 dead transitions. [2024-01-31 16:05:04,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 616 transitions, 11603 flow [2024-01-31 16:05:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:05:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:05:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 377 transitions. [2024-01-31 16:05:04,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430365296803653 [2024-01-31 16:05:04,049 INFO L175 Difference]: Start difference. First operand has 386 places, 535 transitions, 9776 flow. Second operand 12 states and 377 transitions. [2024-01-31 16:05:04,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 616 transitions, 11603 flow [2024-01-31 16:05:04,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 616 transitions, 11452 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:04,513 INFO L231 Difference]: Finished difference. Result has 391 places, 544 transitions, 10131 flow [2024-01-31 16:05:04,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9625, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10131, PETRI_PLACES=391, PETRI_TRANSITIONS=544} [2024-01-31 16:05:04,514 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 314 predicate places. [2024-01-31 16:05:04,514 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 544 transitions, 10131 flow [2024-01-31 16:05:04,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:04,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:04,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:04,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-01-31 16:05:04,514 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:04,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash -277517199, now seen corresponding path program 8 times [2024-01-31 16:05:04,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:04,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260923450] [2024-01-31 16:05:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:04,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:04,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:04,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260923450] [2024-01-31 16:05:04,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260923450] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:04,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:04,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:04,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911595594] [2024-01-31 16:05:04,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:04,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:04,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:04,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:04,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:04,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 544 transitions, 10131 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:04,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:04,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:04,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:06,131 INFO L124 PetriNetUnfolderBase]: 2949/5348 cut-off events. [2024-01-31 16:05:06,132 INFO L125 PetriNetUnfolderBase]: For 125473/126102 co-relation queries the response was YES. [2024-01-31 16:05:06,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35101 conditions, 5348 events. 2949/5348 cut-off events. For 125473/126102 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 37738 event pairs, 618 based on Foata normal form. 97/5277 useless extension candidates. Maximal degree in co-relation 34981. Up to 4110 conditions per place. [2024-01-31 16:05:06,210 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 477 selfloop transitions, 100 changer transitions 0/611 dead transitions. [2024-01-31 16:05:06,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 611 transitions, 11726 flow [2024-01-31 16:05:06,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:05:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:05:06,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 395 transitions. [2024-01-31 16:05:06,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41622760800842995 [2024-01-31 16:05:06,211 INFO L175 Difference]: Start difference. First operand has 391 places, 544 transitions, 10131 flow. Second operand 13 states and 395 transitions. [2024-01-31 16:05:06,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 611 transitions, 11726 flow [2024-01-31 16:05:06,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 611 transitions, 11478 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:06,660 INFO L231 Difference]: Finished difference. Result has 397 places, 544 transitions, 10097 flow [2024-01-31 16:05:06,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9883, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10097, PETRI_PLACES=397, PETRI_TRANSITIONS=544} [2024-01-31 16:05:06,661 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 320 predicate places. [2024-01-31 16:05:06,661 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 544 transitions, 10097 flow [2024-01-31 16:05:06,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:06,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:06,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:06,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-01-31 16:05:06,661 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:06,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1645969073, now seen corresponding path program 9 times [2024-01-31 16:05:06,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:06,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562353531] [2024-01-31 16:05:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:06,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:06,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:06,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562353531] [2024-01-31 16:05:06,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562353531] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:06,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:06,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:06,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575237745] [2024-01-31 16:05:06,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:06,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:06,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:06,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:06,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:06,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 544 transitions, 10097 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:06,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:06,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:06,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:08,279 INFO L124 PetriNetUnfolderBase]: 2875/5264 cut-off events. [2024-01-31 16:05:08,279 INFO L125 PetriNetUnfolderBase]: For 123610/124218 co-relation queries the response was YES. [2024-01-31 16:05:08,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34119 conditions, 5264 events. 2875/5264 cut-off events. For 123610/124218 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37451 event pairs, 448 based on Foata normal form. 97/5213 useless extension candidates. Maximal degree in co-relation 33998. Up to 2642 conditions per place. [2024-01-31 16:05:08,343 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 400 selfloop transitions, 188 changer transitions 0/622 dead transitions. [2024-01-31 16:05:08,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 622 transitions, 11829 flow [2024-01-31 16:05:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 16:05:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 16:05:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 430 transitions. [2024-01-31 16:05:08,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207436399217221 [2024-01-31 16:05:08,345 INFO L175 Difference]: Start difference. First operand has 397 places, 544 transitions, 10097 flow. Second operand 14 states and 430 transitions. [2024-01-31 16:05:08,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 622 transitions, 11829 flow [2024-01-31 16:05:08,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 622 transitions, 11556 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-01-31 16:05:08,807 INFO L231 Difference]: Finished difference. Result has 399 places, 544 transitions, 10208 flow [2024-01-31 16:05:08,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9824, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10208, PETRI_PLACES=399, PETRI_TRANSITIONS=544} [2024-01-31 16:05:08,808 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 322 predicate places. [2024-01-31 16:05:08,808 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 544 transitions, 10208 flow [2024-01-31 16:05:08,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:08,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:08,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:08,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-01-31 16:05:08,808 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:08,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1621208723, now seen corresponding path program 10 times [2024-01-31 16:05:08,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:08,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261174207] [2024-01-31 16:05:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:08,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:09,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261174207] [2024-01-31 16:05:09,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261174207] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:09,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:09,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:09,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106716323] [2024-01-31 16:05:09,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:09,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:09,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:09,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:09,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 544 transitions, 10208 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:09,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:09,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:09,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:10,422 INFO L124 PetriNetUnfolderBase]: 2863/5244 cut-off events. [2024-01-31 16:05:10,422 INFO L125 PetriNetUnfolderBase]: For 124136/124745 co-relation queries the response was YES. [2024-01-31 16:05:10,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34286 conditions, 5244 events. 2863/5244 cut-off events. For 124136/124745 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37270 event pairs, 427 based on Foata normal form. 87/5183 useless extension candidates. Maximal degree in co-relation 34164. Up to 2638 conditions per place. [2024-01-31 16:05:10,478 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 365 selfloop transitions, 211 changer transitions 0/610 dead transitions. [2024-01-31 16:05:10,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 610 transitions, 11774 flow [2024-01-31 16:05:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:05:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:05:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 395 transitions. [2024-01-31 16:05:10,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41622760800842995 [2024-01-31 16:05:10,479 INFO L175 Difference]: Start difference. First operand has 399 places, 544 transitions, 10208 flow. Second operand 13 states and 395 transitions. [2024-01-31 16:05:10,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 610 transitions, 11774 flow [2024-01-31 16:05:10,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 610 transitions, 11467 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:10,904 INFO L231 Difference]: Finished difference. Result has 404 places, 544 transitions, 10330 flow [2024-01-31 16:05:10,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9901, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10330, PETRI_PLACES=404, PETRI_TRANSITIONS=544} [2024-01-31 16:05:10,904 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 327 predicate places. [2024-01-31 16:05:10,904 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 544 transitions, 10330 flow [2024-01-31 16:05:10,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:10,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:10,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:10,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-01-31 16:05:10,905 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:10,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:10,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1551286201, now seen corresponding path program 5 times [2024-01-31 16:05:10,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:10,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416693354] [2024-01-31 16:05:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:10,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:11,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:11,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416693354] [2024-01-31 16:05:11,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416693354] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:11,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:11,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:11,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119645941] [2024-01-31 16:05:11,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:11,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:11,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:11,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:11,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 544 transitions, 10330 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:11,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:11,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:11,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:12,356 INFO L124 PetriNetUnfolderBase]: 2873/5281 cut-off events. [2024-01-31 16:05:12,356 INFO L125 PetriNetUnfolderBase]: For 125932/126551 co-relation queries the response was YES. [2024-01-31 16:05:12,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34753 conditions, 5281 events. 2873/5281 cut-off events. For 125932/126551 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 37756 event pairs, 546 based on Foata normal form. 75/5181 useless extension candidates. Maximal degree in co-relation 34630. Up to 4014 conditions per place. [2024-01-31 16:05:12,433 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 449 selfloop transitions, 87 changer transitions 0/570 dead transitions. [2024-01-31 16:05:12,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 570 transitions, 11591 flow [2024-01-31 16:05:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:12,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-01-31 16:05:12,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-01-31 16:05:12,434 INFO L175 Difference]: Start difference. First operand has 404 places, 544 transitions, 10330 flow. Second operand 7 states and 221 transitions. [2024-01-31 16:05:12,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 570 transitions, 11591 flow [2024-01-31 16:05:12,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 570 transitions, 11303 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:12,917 INFO L231 Difference]: Finished difference. Result has 404 places, 546 transitions, 10260 flow [2024-01-31 16:05:12,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10046, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10260, PETRI_PLACES=404, PETRI_TRANSITIONS=546} [2024-01-31 16:05:12,918 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 327 predicate places. [2024-01-31 16:05:12,918 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 546 transitions, 10260 flow [2024-01-31 16:05:12,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:12,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:12,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:12,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-01-31 16:05:12,918 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:12,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:12,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1072186541, now seen corresponding path program 6 times [2024-01-31 16:05:12,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:12,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231649859] [2024-01-31 16:05:12,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:12,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:13,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:13,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231649859] [2024-01-31 16:05:13,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231649859] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:13,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:13,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640662160] [2024-01-31 16:05:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:13,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:13,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:13,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:13,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 546 transitions, 10260 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:13,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:13,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:13,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:14,454 INFO L124 PetriNetUnfolderBase]: 2887/5295 cut-off events. [2024-01-31 16:05:14,454 INFO L125 PetriNetUnfolderBase]: For 125992/126609 co-relation queries the response was YES. [2024-01-31 16:05:14,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34541 conditions, 5295 events. 2887/5295 cut-off events. For 125992/126609 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37828 event pairs, 675 based on Foata normal form. 53/5165 useless extension candidates. Maximal degree in co-relation 34417. Up to 4492 conditions per place. [2024-01-31 16:05:14,517 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 453 selfloop transitions, 75 changer transitions 0/562 dead transitions. [2024-01-31 16:05:14,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 562 transitions, 11377 flow [2024-01-31 16:05:14,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:14,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-01-31 16:05:14,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207436399217221 [2024-01-31 16:05:14,518 INFO L175 Difference]: Start difference. First operand has 404 places, 546 transitions, 10260 flow. Second operand 7 states and 215 transitions. [2024-01-31 16:05:14,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 562 transitions, 11377 flow [2024-01-31 16:05:14,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 562 transitions, 11248 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:14,978 INFO L231 Difference]: Finished difference. Result has 407 places, 546 transitions, 10307 flow [2024-01-31 16:05:14,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10131, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10307, PETRI_PLACES=407, PETRI_TRANSITIONS=546} [2024-01-31 16:05:14,978 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-01-31 16:05:14,979 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 546 transitions, 10307 flow [2024-01-31 16:05:14,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:14,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:14,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:14,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-01-31 16:05:14,979 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:14,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1524415789, now seen corresponding path program 7 times [2024-01-31 16:05:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:14,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324884768] [2024-01-31 16:05:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:14,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:15,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:15,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324884768] [2024-01-31 16:05:15,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324884768] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:15,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:15,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:15,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942923881] [2024-01-31 16:05:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:15,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:15,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:15,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:15,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 546 transitions, 10307 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:15,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:15,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:15,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:16,454 INFO L124 PetriNetUnfolderBase]: 2869/5269 cut-off events. [2024-01-31 16:05:16,454 INFO L125 PetriNetUnfolderBase]: For 125682/126299 co-relation queries the response was YES. [2024-01-31 16:05:16,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34306 conditions, 5269 events. 2869/5269 cut-off events. For 125682/126299 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 37624 event pairs, 556 based on Foata normal form. 55/5149 useless extension candidates. Maximal degree in co-relation 34182. Up to 4014 conditions per place. [2024-01-31 16:05:16,507 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 433 selfloop transitions, 99 changer transitions 0/566 dead transitions. [2024-01-31 16:05:16,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 566 transitions, 11470 flow [2024-01-31 16:05:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-01-31 16:05:16,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-01-31 16:05:16,509 INFO L175 Difference]: Start difference. First operand has 407 places, 546 transitions, 10307 flow. Second operand 7 states and 217 transitions. [2024-01-31 16:05:16,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 566 transitions, 11470 flow [2024-01-31 16:05:16,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 566 transitions, 11304 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:16,943 INFO L231 Difference]: Finished difference. Result has 407 places, 546 transitions, 10349 flow [2024-01-31 16:05:16,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10141, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10349, PETRI_PLACES=407, PETRI_TRANSITIONS=546} [2024-01-31 16:05:16,944 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-01-31 16:05:16,944 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 546 transitions, 10349 flow [2024-01-31 16:05:16,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:16,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:16,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:16,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-01-31 16:05:16,945 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:16,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash -354529603, now seen corresponding path program 8 times [2024-01-31 16:05:16,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:16,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730535701] [2024-01-31 16:05:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:16,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:17,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:17,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730535701] [2024-01-31 16:05:17,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730535701] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:17,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:17,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:17,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766834508] [2024-01-31 16:05:17,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:17,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:17,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:17,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:17,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:17,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:17,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 546 transitions, 10349 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:17,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:17,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:17,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:18,517 INFO L124 PetriNetUnfolderBase]: 2945/5368 cut-off events. [2024-01-31 16:05:18,518 INFO L125 PetriNetUnfolderBase]: For 131299/131875 co-relation queries the response was YES. [2024-01-31 16:05:18,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35309 conditions, 5368 events. 2945/5368 cut-off events. For 131299/131875 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 38188 event pairs, 523 based on Foata normal form. 92/5267 useless extension candidates. Maximal degree in co-relation 35186. Up to 4096 conditions per place. [2024-01-31 16:05:18,586 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 430 selfloop transitions, 104 changer transitions 0/568 dead transitions. [2024-01-31 16:05:18,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 568 transitions, 11559 flow [2024-01-31 16:05:18,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-01-31 16:05:18,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227005870841487 [2024-01-31 16:05:18,587 INFO L175 Difference]: Start difference. First operand has 407 places, 546 transitions, 10349 flow. Second operand 7 states and 216 transitions. [2024-01-31 16:05:18,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 568 transitions, 11559 flow [2024-01-31 16:05:19,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 568 transitions, 11320 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:19,073 INFO L231 Difference]: Finished difference. Result has 407 places, 551 transitions, 10439 flow [2024-01-31 16:05:19,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10121, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10439, PETRI_PLACES=407, PETRI_TRANSITIONS=551} [2024-01-31 16:05:19,074 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-01-31 16:05:19,074 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 551 transitions, 10439 flow [2024-01-31 16:05:19,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:19,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:19,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:19,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-01-31 16:05:19,074 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:19,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash 375794639, now seen corresponding path program 9 times [2024-01-31 16:05:19,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:19,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109617902] [2024-01-31 16:05:19,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:19,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:19,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:19,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109617902] [2024-01-31 16:05:19,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109617902] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:19,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:19,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:19,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062212296] [2024-01-31 16:05:19,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:19,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:19,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:19,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:19,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:19,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:19,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 551 transitions, 10439 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:19,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:19,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:19,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:20,585 INFO L124 PetriNetUnfolderBase]: 2955/5398 cut-off events. [2024-01-31 16:05:20,585 INFO L125 PetriNetUnfolderBase]: For 131134/131714 co-relation queries the response was YES. [2024-01-31 16:05:20,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35704 conditions, 5398 events. 2955/5398 cut-off events. For 131134/131714 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 38611 event pairs, 525 based on Foata normal form. 92/5297 useless extension candidates. Maximal degree in co-relation 35581. Up to 4112 conditions per place. [2024-01-31 16:05:20,660 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 427 selfloop transitions, 111 changer transitions 0/572 dead transitions. [2024-01-31 16:05:20,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 572 transitions, 11650 flow [2024-01-31 16:05:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-01-31 16:05:20,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227005870841487 [2024-01-31 16:05:20,660 INFO L175 Difference]: Start difference. First operand has 407 places, 551 transitions, 10439 flow. Second operand 7 states and 216 transitions. [2024-01-31 16:05:20,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 572 transitions, 11650 flow [2024-01-31 16:05:21,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 572 transitions, 11457 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:21,183 INFO L231 Difference]: Finished difference. Result has 409 places, 555 transitions, 10530 flow [2024-01-31 16:05:21,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10265, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10530, PETRI_PLACES=409, PETRI_TRANSITIONS=555} [2024-01-31 16:05:21,184 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 332 predicate places. [2024-01-31 16:05:21,184 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 555 transitions, 10530 flow [2024-01-31 16:05:21,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:21,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:21,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:21,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-01-31 16:05:21,184 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:21,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash 410650109, now seen corresponding path program 10 times [2024-01-31 16:05:21,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464122109] [2024-01-31 16:05:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:21,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:21,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:21,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464122109] [2024-01-31 16:05:21,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464122109] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:21,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:21,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:21,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115936402] [2024-01-31 16:05:21,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:21,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:21,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:21,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:21,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:21,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:21,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 555 transitions, 10530 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:21,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:21,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:21,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:22,764 INFO L124 PetriNetUnfolderBase]: 2959/5410 cut-off events. [2024-01-31 16:05:22,765 INFO L125 PetriNetUnfolderBase]: For 133061/133637 co-relation queries the response was YES. [2024-01-31 16:05:22,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35516 conditions, 5410 events. 2959/5410 cut-off events. For 133061/133637 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 38683 event pairs, 546 based on Foata normal form. 66/5283 useless extension candidates. Maximal degree in co-relation 35395. Up to 4124 conditions per place. [2024-01-31 16:05:22,817 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 416 selfloop transitions, 123 changer transitions 0/573 dead transitions. [2024-01-31 16:05:22,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 573 transitions, 11690 flow [2024-01-31 16:05:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-01-31 16:05:22,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41682974559686886 [2024-01-31 16:05:22,817 INFO L175 Difference]: Start difference. First operand has 409 places, 555 transitions, 10530 flow. Second operand 7 states and 213 transitions. [2024-01-31 16:05:22,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 573 transitions, 11690 flow [2024-01-31 16:05:23,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 573 transitions, 11407 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-01-31 16:05:23,242 INFO L231 Difference]: Finished difference. Result has 404 places, 558 transitions, 10575 flow [2024-01-31 16:05:23,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10235, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10575, PETRI_PLACES=404, PETRI_TRANSITIONS=558} [2024-01-31 16:05:23,242 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 327 predicate places. [2024-01-31 16:05:23,242 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 558 transitions, 10575 flow [2024-01-31 16:05:23,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:23,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:23,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:23,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-01-31 16:05:23,243 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:23,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:23,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1135065599, now seen corresponding path program 11 times [2024-01-31 16:05:23,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:23,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086938511] [2024-01-31 16:05:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:23,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:23,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:23,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086938511] [2024-01-31 16:05:23,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086938511] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:23,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:23,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:23,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151627151] [2024-01-31 16:05:23,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:23,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:23,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:23,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:23,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:23,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 558 transitions, 10575 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:23,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:23,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:23,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:24,852 INFO L124 PetriNetUnfolderBase]: 2899/5357 cut-off events. [2024-01-31 16:05:24,852 INFO L125 PetriNetUnfolderBase]: For 131212/131827 co-relation queries the response was YES. [2024-01-31 16:05:24,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34691 conditions, 5357 events. 2899/5357 cut-off events. For 131212/131827 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38551 event pairs, 451 based on Foata normal form. 81/5290 useless extension candidates. Maximal degree in co-relation 34577. Up to 2778 conditions per place. [2024-01-31 16:05:24,921 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 381 selfloop transitions, 197 changer transitions 0/612 dead transitions. [2024-01-31 16:05:24,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 612 transitions, 12179 flow [2024-01-31 16:05:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:05:24,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:05:24,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-01-31 16:05:24,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561643835616437 [2024-01-31 16:05:24,922 INFO L175 Difference]: Start difference. First operand has 404 places, 558 transitions, 10575 flow. Second operand 10 states and 318 transitions. [2024-01-31 16:05:24,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 612 transitions, 12179 flow [2024-01-31 16:05:25,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 612 transitions, 11943 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:25,369 INFO L231 Difference]: Finished difference. Result has 409 places, 558 transitions, 10783 flow [2024-01-31 16:05:25,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10343, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10783, PETRI_PLACES=409, PETRI_TRANSITIONS=558} [2024-01-31 16:05:25,370 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 332 predicate places. [2024-01-31 16:05:25,370 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 558 transitions, 10783 flow [2024-01-31 16:05:25,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:25,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:25,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:25,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-01-31 16:05:25,370 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:25,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash 773793389, now seen corresponding path program 12 times [2024-01-31 16:05:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:25,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787134159] [2024-01-31 16:05:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:25,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:25,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:25,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787134159] [2024-01-31 16:05:25,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787134159] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:25,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:25,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:25,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255367566] [2024-01-31 16:05:25,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:25,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:25,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:25,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:25,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:25,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:25,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 558 transitions, 10783 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:25,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:25,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:25,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:27,071 INFO L124 PetriNetUnfolderBase]: 2887/5338 cut-off events. [2024-01-31 16:05:27,071 INFO L125 PetriNetUnfolderBase]: For 137307/137923 co-relation queries the response was YES. [2024-01-31 16:05:27,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35060 conditions, 5338 events. 2887/5338 cut-off events. For 137307/137923 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38321 event pairs, 484 based on Foata normal form. 81/5270 useless extension candidates. Maximal degree in co-relation 34946. Up to 2774 conditions per place. [2024-01-31 16:05:27,134 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 382 selfloop transitions, 197 changer transitions 0/613 dead transitions. [2024-01-31 16:05:27,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 613 transitions, 12331 flow [2024-01-31 16:05:27,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:05:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:05:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 342 transitions. [2024-01-31 16:05:27,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259028642590286 [2024-01-31 16:05:27,135 INFO L175 Difference]: Start difference. First operand has 409 places, 558 transitions, 10783 flow. Second operand 11 states and 342 transitions. [2024-01-31 16:05:27,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 613 transitions, 12331 flow [2024-01-31 16:05:27,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 613 transitions, 11901 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-01-31 16:05:27,629 INFO L231 Difference]: Finished difference. Result has 410 places, 558 transitions, 10793 flow [2024-01-31 16:05:27,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10365, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10793, PETRI_PLACES=410, PETRI_TRANSITIONS=558} [2024-01-31 16:05:27,629 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 333 predicate places. [2024-01-31 16:05:27,629 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 558 transitions, 10793 flow [2024-01-31 16:05:27,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:27,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:27,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:27,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-01-31 16:05:27,630 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:27,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1135986299, now seen corresponding path program 13 times [2024-01-31 16:05:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:27,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279873862] [2024-01-31 16:05:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:27,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:27,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279873862] [2024-01-31 16:05:27,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279873862] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:27,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:27,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:27,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667748055] [2024-01-31 16:05:27,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:27,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:27,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:27,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:27,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:27,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:27,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 558 transitions, 10793 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:27,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:27,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:27,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:29,223 INFO L124 PetriNetUnfolderBase]: 2871/5306 cut-off events. [2024-01-31 16:05:29,223 INFO L125 PetriNetUnfolderBase]: For 136233/136855 co-relation queries the response was YES. [2024-01-31 16:05:29,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34686 conditions, 5306 events. 2871/5306 cut-off events. For 136233/136855 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38125 event pairs, 446 based on Foata normal form. 85/5243 useless extension candidates. Maximal degree in co-relation 34572. Up to 2768 conditions per place. [2024-01-31 16:05:29,288 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 360 selfloop transitions, 209 changer transitions 0/603 dead transitions. [2024-01-31 16:05:29,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 603 transitions, 12165 flow [2024-01-31 16:05:29,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:05:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:05:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2024-01-31 16:05:29,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301369863013699 [2024-01-31 16:05:29,289 INFO L175 Difference]: Start difference. First operand has 410 places, 558 transitions, 10793 flow. Second operand 10 states and 314 transitions. [2024-01-31 16:05:29,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 603 transitions, 12165 flow [2024-01-31 16:05:29,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 603 transitions, 11739 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-01-31 16:05:29,759 INFO L231 Difference]: Finished difference. Result has 408 places, 558 transitions, 10813 flow [2024-01-31 16:05:29,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10367, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10813, PETRI_PLACES=408, PETRI_TRANSITIONS=558} [2024-01-31 16:05:29,759 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 331 predicate places. [2024-01-31 16:05:29,759 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 558 transitions, 10813 flow [2024-01-31 16:05:29,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:29,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:29,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:29,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-01-31 16:05:29,760 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:29,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:29,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1745149563, now seen corresponding path program 14 times [2024-01-31 16:05:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:29,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652684245] [2024-01-31 16:05:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:29,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:29,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652684245] [2024-01-31 16:05:29,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652684245] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:29,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:29,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:29,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496166369] [2024-01-31 16:05:29,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:29,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:29,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:30,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:30,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 558 transitions, 10813 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:30,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:30,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:30,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:31,312 INFO L124 PetriNetUnfolderBase]: 2987/5516 cut-off events. [2024-01-31 16:05:31,312 INFO L125 PetriNetUnfolderBase]: For 135645/136273 co-relation queries the response was YES. [2024-01-31 16:05:31,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35699 conditions, 5516 events. 2987/5516 cut-off events. For 135645/136273 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 39830 event pairs, 329 based on Foata normal form. 97/5464 useless extension candidates. Maximal degree in co-relation 35586. Up to 1704 conditions per place. [2024-01-31 16:05:31,378 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 334 selfloop transitions, 266 changer transitions 0/634 dead transitions. [2024-01-31 16:05:31,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 634 transitions, 12667 flow [2024-01-31 16:05:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:05:31,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:05:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 353 transitions. [2024-01-31 16:05:31,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396014943960149 [2024-01-31 16:05:31,379 INFO L175 Difference]: Start difference. First operand has 408 places, 558 transitions, 10813 flow. Second operand 11 states and 353 transitions. [2024-01-31 16:05:31,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 634 transitions, 12667 flow [2024-01-31 16:05:31,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 634 transitions, 12209 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-01-31 16:05:31,850 INFO L231 Difference]: Finished difference. Result has 409 places, 567 transitions, 11056 flow [2024-01-31 16:05:31,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10371, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11056, PETRI_PLACES=409, PETRI_TRANSITIONS=567} [2024-01-31 16:05:31,851 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 332 predicate places. [2024-01-31 16:05:31,851 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 567 transitions, 11056 flow [2024-01-31 16:05:31,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:31,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:31,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:31,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-01-31 16:05:31,851 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:31,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1000551013, now seen corresponding path program 15 times [2024-01-31 16:05:31,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:31,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600577521] [2024-01-31 16:05:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:31,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:32,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:32,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600577521] [2024-01-31 16:05:32,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600577521] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:32,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:32,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:32,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127316515] [2024-01-31 16:05:32,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:32,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:32,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:32,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:32,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:32,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 567 transitions, 11056 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:32,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:32,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:32,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:33,372 INFO L124 PetriNetUnfolderBase]: 3128/5719 cut-off events. [2024-01-31 16:05:33,373 INFO L125 PetriNetUnfolderBase]: For 143408/144032 co-relation queries the response was YES. [2024-01-31 16:05:33,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37524 conditions, 5719 events. 3128/5719 cut-off events. For 143408/144032 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 41151 event pairs, 279 based on Foata normal form. 114/5665 useless extension candidates. Maximal degree in co-relation 37411. Up to 1775 conditions per place. [2024-01-31 16:05:33,443 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 318 selfloop transitions, 301 changer transitions 0/653 dead transitions. [2024-01-31 16:05:33,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 653 transitions, 13195 flow [2024-01-31 16:05:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:05:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:05:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 376 transitions. [2024-01-31 16:05:33,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292237442922374 [2024-01-31 16:05:33,444 INFO L175 Difference]: Start difference. First operand has 409 places, 567 transitions, 11056 flow. Second operand 12 states and 376 transitions. [2024-01-31 16:05:33,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 653 transitions, 13195 flow [2024-01-31 16:05:33,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 653 transitions, 12738 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:33,928 INFO L231 Difference]: Finished difference. Result has 415 places, 590 transitions, 11646 flow [2024-01-31 16:05:33,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10629, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11646, PETRI_PLACES=415, PETRI_TRANSITIONS=590} [2024-01-31 16:05:33,928 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 338 predicate places. [2024-01-31 16:05:33,928 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 590 transitions, 11646 flow [2024-01-31 16:05:33,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:33,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:33,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:33,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-01-31 16:05:33,929 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:33,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1771844283, now seen corresponding path program 16 times [2024-01-31 16:05:33,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:33,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475214163] [2024-01-31 16:05:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:33,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:34,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:34,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475214163] [2024-01-31 16:05:34,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475214163] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:34,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:34,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:34,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955228409] [2024-01-31 16:05:34,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:34,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:34,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:34,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:34,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:34,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 590 transitions, 11646 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:34,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:34,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:34,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:35,522 INFO L124 PetriNetUnfolderBase]: 3047/5626 cut-off events. [2024-01-31 16:05:35,522 INFO L125 PetriNetUnfolderBase]: For 144191/144893 co-relation queries the response was YES. [2024-01-31 16:05:35,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38110 conditions, 5626 events. 3047/5626 cut-off events. For 144191/144893 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 40870 event pairs, 346 based on Foata normal form. 97/5574 useless extension candidates. Maximal degree in co-relation 37995. Up to 1732 conditions per place. [2024-01-31 16:05:35,591 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 347 selfloop transitions, 281 changer transitions 0/662 dead transitions. [2024-01-31 16:05:35,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 662 transitions, 13508 flow [2024-01-31 16:05:35,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:05:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:05:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 408 transitions. [2024-01-31 16:05:35,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42992623814541625 [2024-01-31 16:05:35,592 INFO L175 Difference]: Start difference. First operand has 415 places, 590 transitions, 11646 flow. Second operand 13 states and 408 transitions. [2024-01-31 16:05:35,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 662 transitions, 13508 flow [2024-01-31 16:05:36,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 662 transitions, 13015 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-01-31 16:05:36,077 INFO L231 Difference]: Finished difference. Result has 419 places, 590 transitions, 11743 flow [2024-01-31 16:05:36,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11169, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11743, PETRI_PLACES=419, PETRI_TRANSITIONS=590} [2024-01-31 16:05:36,078 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 342 predicate places. [2024-01-31 16:05:36,078 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 590 transitions, 11743 flow [2024-01-31 16:05:36,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:36,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:36,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:36,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-01-31 16:05:36,078 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:36,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1886120263, now seen corresponding path program 17 times [2024-01-31 16:05:36,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:36,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021817492] [2024-01-31 16:05:36,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:36,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:36,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:36,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:36,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021817492] [2024-01-31 16:05:36,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021817492] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:36,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:36,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:36,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356130595] [2024-01-31 16:05:36,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:36,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:36,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:36,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:36,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:36,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 590 transitions, 11743 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:36,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:36,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:36,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:37,850 INFO L124 PetriNetUnfolderBase]: 3104/5679 cut-off events. [2024-01-31 16:05:37,850 INFO L125 PetriNetUnfolderBase]: For 152840/153500 co-relation queries the response was YES. [2024-01-31 16:05:37,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38807 conditions, 5679 events. 3104/5679 cut-off events. For 152840/153500 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 40850 event pairs, 279 based on Foata normal form. 114/5625 useless extension candidates. Maximal degree in co-relation 38692. Up to 1767 conditions per place. [2024-01-31 16:05:37,915 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 326 selfloop transitions, 301 changer transitions 0/661 dead transitions. [2024-01-31 16:05:37,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 661 transitions, 13613 flow [2024-01-31 16:05:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 16:05:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 16:05:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 431 transitions. [2024-01-31 16:05:37,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217221135029354 [2024-01-31 16:05:37,917 INFO L175 Difference]: Start difference. First operand has 419 places, 590 transitions, 11743 flow. Second operand 14 states and 431 transitions. [2024-01-31 16:05:37,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 661 transitions, 13613 flow [2024-01-31 16:05:38,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 661 transitions, 13080 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-01-31 16:05:38,384 INFO L231 Difference]: Finished difference. Result has 423 places, 590 transitions, 11832 flow [2024-01-31 16:05:38,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11214, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11832, PETRI_PLACES=423, PETRI_TRANSITIONS=590} [2024-01-31 16:05:38,384 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-01-31 16:05:38,384 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 590 transitions, 11832 flow [2024-01-31 16:05:38,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:38,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:38,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:38,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-01-31 16:05:38,385 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:38,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:38,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1936596731, now seen corresponding path program 18 times [2024-01-31 16:05:38,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:38,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236824261] [2024-01-31 16:05:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:38,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:38,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236824261] [2024-01-31 16:05:38,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236824261] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:38,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:38,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:38,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682177874] [2024-01-31 16:05:38,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:38,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:38,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:38,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:38,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:38,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:38,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 590 transitions, 11832 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:38,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:38,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:38,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:39,963 INFO L124 PetriNetUnfolderBase]: 3023/5589 cut-off events. [2024-01-31 16:05:39,963 INFO L125 PetriNetUnfolderBase]: For 147229/147930 co-relation queries the response was YES. [2024-01-31 16:05:40,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38052 conditions, 5589 events. 3023/5589 cut-off events. For 147229/147930 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 40561 event pairs, 308 based on Foata normal form. 77/5517 useless extension candidates. Maximal degree in co-relation 37937. Up to 1724 conditions per place. [2024-01-31 16:05:40,038 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 301 selfloop transitions, 315 changer transitions 0/650 dead transitions. [2024-01-31 16:05:40,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 650 transitions, 13519 flow [2024-01-31 16:05:40,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:05:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:05:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 373 transitions. [2024-01-31 16:05:40,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2024-01-31 16:05:40,039 INFO L175 Difference]: Start difference. First operand has 423 places, 590 transitions, 11832 flow. Second operand 12 states and 373 transitions. [2024-01-31 16:05:40,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 650 transitions, 13519 flow [2024-01-31 16:05:40,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 650 transitions, 12940 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-01-31 16:05:40,516 INFO L231 Difference]: Finished difference. Result has 423 places, 590 transitions, 11899 flow [2024-01-31 16:05:40,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11259, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11899, PETRI_PLACES=423, PETRI_TRANSITIONS=590} [2024-01-31 16:05:40,517 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-01-31 16:05:40,517 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 590 transitions, 11899 flow [2024-01-31 16:05:40,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:40,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:40,517 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] [2024-01-31 16:05:40,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-01-31 16:05:40,518 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:40,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:40,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1191998181, now seen corresponding path program 19 times [2024-01-31 16:05:40,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:40,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958199199] [2024-01-31 16:05:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:40,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:40,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:40,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958199199] [2024-01-31 16:05:40,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958199199] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:40,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:40,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:40,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067416069] [2024-01-31 16:05:40,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:40,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:40,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:40,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:40,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:40,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 590 transitions, 11899 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:40,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:40,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:40,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:42,222 INFO L124 PetriNetUnfolderBase]: 3280/6024 cut-off events. [2024-01-31 16:05:42,222 INFO L125 PetriNetUnfolderBase]: For 162736/163393 co-relation queries the response was YES. [2024-01-31 16:05:42,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40891 conditions, 6024 events. 3280/6024 cut-off events. For 162736/163393 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 43826 event pairs, 262 based on Foata normal form. 114/5976 useless extension candidates. Maximal degree in co-relation 40776. Up to 1835 conditions per place. [2024-01-31 16:05:42,292 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 293 selfloop transitions, 348 changer transitions 0/675 dead transitions. [2024-01-31 16:05:42,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 675 transitions, 14181 flow [2024-01-31 16:05:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:05:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:05:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 400 transitions. [2024-01-31 16:05:42,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214963119072708 [2024-01-31 16:05:42,293 INFO L175 Difference]: Start difference. First operand has 423 places, 590 transitions, 11899 flow. Second operand 13 states and 400 transitions. [2024-01-31 16:05:42,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 675 transitions, 14181 flow [2024-01-31 16:05:42,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 675 transitions, 13758 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:42,810 INFO L231 Difference]: Finished difference. Result has 430 places, 618 transitions, 12902 flow [2024-01-31 16:05:42,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11496, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12902, PETRI_PLACES=430, PETRI_TRANSITIONS=618} [2024-01-31 16:05:42,811 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 353 predicate places. [2024-01-31 16:05:42,811 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 618 transitions, 12902 flow [2024-01-31 16:05:42,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:42,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:42,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:42,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-01-31 16:05:42,812 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:42,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:42,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1054634955, now seen corresponding path program 20 times [2024-01-31 16:05:42,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:42,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541968902] [2024-01-31 16:05:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:42,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:43,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:43,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541968902] [2024-01-31 16:05:43,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541968902] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:43,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:43,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:43,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143504289] [2024-01-31 16:05:43,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:43,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:43,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 618 transitions, 12902 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:43,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:43,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:43,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:44,584 INFO L124 PetriNetUnfolderBase]: 3412/6214 cut-off events. [2024-01-31 16:05:44,584 INFO L125 PetriNetUnfolderBase]: For 177734/178391 co-relation queries the response was YES. [2024-01-31 16:05:44,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43068 conditions, 6214 events. 3412/6214 cut-off events. For 177734/178391 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 45137 event pairs, 280 based on Foata normal form. 88/6134 useless extension candidates. Maximal degree in co-relation 42952. Up to 1879 conditions per place. [2024-01-31 16:05:44,663 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 288 selfloop transitions, 361 changer transitions 0/683 dead transitions. [2024-01-31 16:05:44,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 683 transitions, 14738 flow [2024-01-31 16:05:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:05:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:05:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 394 transitions. [2024-01-31 16:05:44,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517386722866173 [2024-01-31 16:05:44,664 INFO L175 Difference]: Start difference. First operand has 430 places, 618 transitions, 12902 flow. Second operand 13 states and 394 transitions. [2024-01-31 16:05:44,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 683 transitions, 14738 flow [2024-01-31 16:05:45,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 683 transitions, 14281 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:45,240 INFO L231 Difference]: Finished difference. Result has 437 places, 632 transitions, 13475 flow [2024-01-31 16:05:45,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12455, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13475, PETRI_PLACES=437, PETRI_TRANSITIONS=632} [2024-01-31 16:05:45,240 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-01-31 16:05:45,241 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 632 transitions, 13475 flow [2024-01-31 16:05:45,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:45,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:45,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:45,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-01-31 16:05:45,241 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:45,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1439256504, now seen corresponding path program 1 times [2024-01-31 16:05:45,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:45,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902030881] [2024-01-31 16:05:45,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:45,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:45,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:45,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902030881] [2024-01-31 16:05:45,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902030881] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:45,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:45,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:05:45,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163678309] [2024-01-31 16:05:45,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:45,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:05:45,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:45,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:05:45,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:05:45,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:45,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 632 transitions, 13475 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:45,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:45,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:45,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:47,151 INFO L124 PetriNetUnfolderBase]: 3367/6375 cut-off events. [2024-01-31 16:05:47,151 INFO L125 PetriNetUnfolderBase]: For 199591/200037 co-relation queries the response was YES. [2024-01-31 16:05:47,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45655 conditions, 6375 events. 3367/6375 cut-off events. For 199591/200037 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 48639 event pairs, 589 based on Foata normal form. 74/6282 useless extension candidates. Maximal degree in co-relation 45537. Up to 1927 conditions per place. [2024-01-31 16:05:47,224 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 503 selfloop transitions, 143 changer transitions 17/697 dead transitions. [2024-01-31 16:05:47,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 697 transitions, 15549 flow [2024-01-31 16:05:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:05:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:05:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2024-01-31 16:05:47,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-01-31 16:05:47,225 INFO L175 Difference]: Start difference. First operand has 437 places, 632 transitions, 13475 flow. Second operand 10 states and 325 transitions. [2024-01-31 16:05:47,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 697 transitions, 15549 flow [2024-01-31 16:05:47,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 697 transitions, 14810 flow, removed 46 selfloop flow, removed 15 redundant places. [2024-01-31 16:05:47,840 INFO L231 Difference]: Finished difference. Result has 434 places, 617 transitions, 12922 flow [2024-01-31 16:05:47,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12792, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12922, PETRI_PLACES=434, PETRI_TRANSITIONS=617} [2024-01-31 16:05:47,840 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 357 predicate places. [2024-01-31 16:05:47,840 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 617 transitions, 12922 flow [2024-01-31 16:05:47,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:47,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:47,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-01-31 16:05:47,841 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:47,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:47,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2082046030, now seen corresponding path program 1 times [2024-01-31 16:05:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:47,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87023223] [2024-01-31 16:05:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:48,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:48,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87023223] [2024-01-31 16:05:48,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87023223] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:48,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:48,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:05:48,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178072934] [2024-01-31 16:05:48,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:48,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:05:48,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:48,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:05:48,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:05:48,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:48,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 617 transitions, 12922 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:48,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:48,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:48,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:49,791 INFO L124 PetriNetUnfolderBase]: 3449/6608 cut-off events. [2024-01-31 16:05:49,792 INFO L125 PetriNetUnfolderBase]: For 193253/193981 co-relation queries the response was YES. [2024-01-31 16:05:49,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45439 conditions, 6608 events. 3449/6608 cut-off events. For 193253/193981 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 51416 event pairs, 756 based on Foata normal form. 107/6578 useless extension candidates. Maximal degree in co-relation 45320. Up to 2628 conditions per place. [2024-01-31 16:05:49,864 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 566 selfloop transitions, 118 changer transitions 4/722 dead transitions. [2024-01-31 16:05:49,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 722 transitions, 15399 flow [2024-01-31 16:05:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:05:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:05:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 358 transitions. [2024-01-31 16:05:49,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44582814445828145 [2024-01-31 16:05:49,865 INFO L175 Difference]: Start difference. First operand has 434 places, 617 transitions, 12922 flow. Second operand 11 states and 358 transitions. [2024-01-31 16:05:49,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 722 transitions, 15399 flow [2024-01-31 16:05:50,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 722 transitions, 15116 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:50,472 INFO L231 Difference]: Finished difference. Result has 439 places, 620 transitions, 12964 flow [2024-01-31 16:05:50,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12651, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12964, PETRI_PLACES=439, PETRI_TRANSITIONS=620} [2024-01-31 16:05:50,473 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 362 predicate places. [2024-01-31 16:05:50,473 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 620 transitions, 12964 flow [2024-01-31 16:05:50,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:50,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:50,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:50,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-01-31 16:05:50,473 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:50,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:50,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1000130548, now seen corresponding path program 2 times [2024-01-31 16:05:50,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:50,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742468810] [2024-01-31 16:05:50,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:50,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:50,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:50,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742468810] [2024-01-31 16:05:50,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742468810] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:50,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:50,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:05:50,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32905935] [2024-01-31 16:05:50,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:50,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:05:50,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:50,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:05:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:05:50,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:50,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 620 transitions, 12964 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:50,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:50,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:50,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:52,495 INFO L124 PetriNetUnfolderBase]: 3484/6844 cut-off events. [2024-01-31 16:05:52,496 INFO L125 PetriNetUnfolderBase]: For 210992/211480 co-relation queries the response was YES. [2024-01-31 16:05:52,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48022 conditions, 6844 events. 3484/6844 cut-off events. For 210992/211480 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 54574 event pairs, 558 based on Foata normal form. 94/6760 useless extension candidates. Maximal degree in co-relation 47901. Up to 2849 conditions per place. [2024-01-31 16:05:52,593 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 494 selfloop transitions, 162 changer transitions 4/694 dead transitions. [2024-01-31 16:05:52,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 694 transitions, 15109 flow [2024-01-31 16:05:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:05:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:05:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 364 transitions. [2024-01-31 16:05:52,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533001245330012 [2024-01-31 16:05:52,594 INFO L175 Difference]: Start difference. First operand has 439 places, 620 transitions, 12964 flow. Second operand 11 states and 364 transitions. [2024-01-31 16:05:52,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 694 transitions, 15109 flow [2024-01-31 16:05:53,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 694 transitions, 14945 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:53,471 INFO L231 Difference]: Finished difference. Result has 445 places, 619 transitions, 13188 flow [2024-01-31 16:05:53,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12800, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13188, PETRI_PLACES=445, PETRI_TRANSITIONS=619} [2024-01-31 16:05:53,472 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 368 predicate places. [2024-01-31 16:05:53,472 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 619 transitions, 13188 flow [2024-01-31 16:05:53,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:53,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:53,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:53,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-01-31 16:05:53,473 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:53,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:53,473 INFO L85 PathProgramCache]: Analyzing trace with hash 871139500, now seen corresponding path program 3 times [2024-01-31 16:05:53,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:53,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410153014] [2024-01-31 16:05:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:53,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:53,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:53,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410153014] [2024-01-31 16:05:53,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410153014] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:53,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:53,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:05:53,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055354154] [2024-01-31 16:05:53,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:53,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:05:53,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:53,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:05:53,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:05:53,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:53,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 619 transitions, 13188 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:53,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:53,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:53,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:55,606 INFO L124 PetriNetUnfolderBase]: 3479/6861 cut-off events. [2024-01-31 16:05:55,606 INFO L125 PetriNetUnfolderBase]: For 218238/218767 co-relation queries the response was YES. [2024-01-31 16:05:55,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49452 conditions, 6861 events. 3479/6861 cut-off events. For 218238/218767 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 54799 event pairs, 565 based on Foata normal form. 92/6784 useless extension candidates. Maximal degree in co-relation 49328. Up to 2849 conditions per place. [2024-01-31 16:05:55,686 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 500 selfloop transitions, 160 changer transitions 7/701 dead transitions. [2024-01-31 16:05:55,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 701 transitions, 15413 flow [2024-01-31 16:05:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:05:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:05:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 420 transitions. [2024-01-31 16:05:55,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44257112750263433 [2024-01-31 16:05:55,687 INFO L175 Difference]: Start difference. First operand has 445 places, 619 transitions, 13188 flow. Second operand 13 states and 420 transitions. [2024-01-31 16:05:55,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 701 transitions, 15413 flow [2024-01-31 16:05:56,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 701 transitions, 15176 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:56,445 INFO L231 Difference]: Finished difference. Result has 450 places, 612 transitions, 13220 flow [2024-01-31 16:05:56,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12959, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13220, PETRI_PLACES=450, PETRI_TRANSITIONS=612} [2024-01-31 16:05:56,445 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 373 predicate places. [2024-01-31 16:05:56,446 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 612 transitions, 13220 flow [2024-01-31 16:05:56,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:56,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:56,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:56,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-01-31 16:05:56,446 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:56,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:56,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1129778306, now seen corresponding path program 4 times [2024-01-31 16:05:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:56,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002868328] [2024-01-31 16:05:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:56,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:56,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:56,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002868328] [2024-01-31 16:05:56,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002868328] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:56,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:56,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:05:56,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73212260] [2024-01-31 16:05:56,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:56,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:05:56,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:05:56,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:05:56,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:56,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 612 transitions, 13220 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:56,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:56,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:56,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:58,644 INFO L124 PetriNetUnfolderBase]: 3575/7156 cut-off events. [2024-01-31 16:05:58,644 INFO L125 PetriNetUnfolderBase]: For 232391/232950 co-relation queries the response was YES. [2024-01-31 16:05:58,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52567 conditions, 7156 events. 3575/7156 cut-off events. For 232391/232950 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 58289 event pairs, 583 based on Foata normal form. 80/7052 useless extension candidates. Maximal degree in co-relation 52443. Up to 2163 conditions per place. [2024-01-31 16:05:58,737 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 423 selfloop transitions, 255 changer transitions 8/720 dead transitions. [2024-01-31 16:05:58,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 720 transitions, 16204 flow [2024-01-31 16:05:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 16:05:58,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 16:05:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 450 transitions. [2024-01-31 16:05:58,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44031311154598823 [2024-01-31 16:05:58,738 INFO L175 Difference]: Start difference. First operand has 450 places, 612 transitions, 13220 flow. Second operand 14 states and 450 transitions. [2024-01-31 16:05:58,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 720 transitions, 16204 flow [2024-01-31 16:05:59,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 720 transitions, 15914 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-01-31 16:05:59,530 INFO L231 Difference]: Finished difference. Result has 454 places, 633 transitions, 14241 flow [2024-01-31 16:05:59,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12938, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14241, PETRI_PLACES=454, PETRI_TRANSITIONS=633} [2024-01-31 16:05:59,531 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 377 predicate places. [2024-01-31 16:05:59,531 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 633 transitions, 14241 flow [2024-01-31 16:05:59,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:59,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:59,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:59,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-01-31 16:05:59,532 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:59,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash -933333460, now seen corresponding path program 5 times [2024-01-31 16:05:59,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:59,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109297885] [2024-01-31 16:05:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:59,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:59,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:59,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109297885] [2024-01-31 16:05:59,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109297885] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:59,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:59,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:05:59,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297862732] [2024-01-31 16:05:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:59,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:05:59,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:05:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:05:59,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:59,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 633 transitions, 14241 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:59,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:59,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:59,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:01,875 INFO L124 PetriNetUnfolderBase]: 3577/7191 cut-off events. [2024-01-31 16:06:01,875 INFO L125 PetriNetUnfolderBase]: For 242010/242569 co-relation queries the response was YES. [2024-01-31 16:06:01,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54787 conditions, 7191 events. 3577/7191 cut-off events. For 242010/242569 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 58832 event pairs, 522 based on Foata normal form. 80/7087 useless extension candidates. Maximal degree in co-relation 54662. Up to 2316 conditions per place. [2024-01-31 16:06:01,963 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 429 selfloop transitions, 227 changer transitions 13/703 dead transitions. [2024-01-31 16:06:01,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 703 transitions, 16326 flow [2024-01-31 16:06:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:06:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:06:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 382 transitions. [2024-01-31 16:06:01,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360730593607306 [2024-01-31 16:06:01,964 INFO L175 Difference]: Start difference. First operand has 454 places, 633 transitions, 14241 flow. Second operand 12 states and 382 transitions. [2024-01-31 16:06:01,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 703 transitions, 16326 flow [2024-01-31 16:06:02,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 703 transitions, 16045 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-01-31 16:06:02,822 INFO L231 Difference]: Finished difference. Result has 457 places, 625 transitions, 14371 flow [2024-01-31 16:06:02,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13969, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14371, PETRI_PLACES=457, PETRI_TRANSITIONS=625} [2024-01-31 16:06:02,823 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 380 predicate places. [2024-01-31 16:06:02,824 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 625 transitions, 14371 flow [2024-01-31 16:06:02,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:02,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:02,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:02,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-01-31 16:06:02,825 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:02,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:02,825 INFO L85 PathProgramCache]: Analyzing trace with hash -839382714, now seen corresponding path program 2 times [2024-01-31 16:06:02,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:02,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840355445] [2024-01-31 16:06:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:02,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:03,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:03,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840355445] [2024-01-31 16:06:03,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840355445] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:03,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:03,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703922769] [2024-01-31 16:06:03,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:03,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:03,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:03,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:03,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 625 transitions, 14371 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:03,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:03,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:03,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:05,172 INFO L124 PetriNetUnfolderBase]: 3636/7168 cut-off events. [2024-01-31 16:06:05,172 INFO L125 PetriNetUnfolderBase]: For 242800/243990 co-relation queries the response was YES. [2024-01-31 16:06:05,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56092 conditions, 7168 events. 3636/7168 cut-off events. For 242800/243990 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 57471 event pairs, 902 based on Foata normal form. 89/7085 useless extension candidates. Maximal degree in co-relation 55965. Up to 3728 conditions per place. [2024-01-31 16:06:05,251 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 524 selfloop transitions, 118 changer transitions 15/690 dead transitions. [2024-01-31 16:06:05,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 690 transitions, 16330 flow [2024-01-31 16:06:05,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:05,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 350 transitions. [2024-01-31 16:06:05,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43586550435865506 [2024-01-31 16:06:05,252 INFO L175 Difference]: Start difference. First operand has 457 places, 625 transitions, 14371 flow. Second operand 11 states and 350 transitions. [2024-01-31 16:06:05,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 690 transitions, 16330 flow [2024-01-31 16:06:06,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 690 transitions, 15927 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-01-31 16:06:06,075 INFO L231 Difference]: Finished difference. Result has 452 places, 610 transitions, 13982 flow [2024-01-31 16:06:06,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13976, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13982, PETRI_PLACES=452, PETRI_TRANSITIONS=610} [2024-01-31 16:06:06,076 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 375 predicate places. [2024-01-31 16:06:06,076 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 610 transitions, 13982 flow [2024-01-31 16:06:06,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:06,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:06,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:06,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-01-31 16:06:06,076 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:06,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:06,077 INFO L85 PathProgramCache]: Analyzing trace with hash 945981058, now seen corresponding path program 6 times [2024-01-31 16:06:06,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:06,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299333765] [2024-01-31 16:06:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:06,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:06,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299333765] [2024-01-31 16:06:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299333765] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:06,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:06,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:06,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057431817] [2024-01-31 16:06:06,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:06,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:06,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:06,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 610 transitions, 13982 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:06,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:06,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:06,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:08,325 INFO L124 PetriNetUnfolderBase]: 3444/7018 cut-off events. [2024-01-31 16:06:08,326 INFO L125 PetriNetUnfolderBase]: For 236638/237121 co-relation queries the response was YES. [2024-01-31 16:06:08,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54245 conditions, 7018 events. 3444/7018 cut-off events. For 236638/237121 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 57759 event pairs, 800 based on Foata normal form. 106/6963 useless extension candidates. Maximal degree in co-relation 54120. Up to 2113 conditions per place. [2024-01-31 16:06:08,419 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 421 selfloop transitions, 167 changer transitions 40/662 dead transitions. [2024-01-31 16:06:08,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 662 transitions, 15857 flow [2024-01-31 16:06:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:08,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2024-01-31 16:06:08,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490106544901065 [2024-01-31 16:06:08,420 INFO L175 Difference]: Start difference. First operand has 452 places, 610 transitions, 13982 flow. Second operand 9 states and 295 transitions. [2024-01-31 16:06:08,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 662 transitions, 15857 flow [2024-01-31 16:06:09,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 662 transitions, 15482 flow, removed 18 selfloop flow, removed 20 redundant places. [2024-01-31 16:06:09,245 INFO L231 Difference]: Finished difference. Result has 441 places, 571 transitions, 13231 flow [2024-01-31 16:06:09,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13631, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13231, PETRI_PLACES=441, PETRI_TRANSITIONS=571} [2024-01-31 16:06:09,246 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 364 predicate places. [2024-01-31 16:06:09,246 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 571 transitions, 13231 flow [2024-01-31 16:06:09,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:09,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:09,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:09,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-01-31 16:06:09,246 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:09,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:09,246 INFO L85 PathProgramCache]: Analyzing trace with hash 766969784, now seen corresponding path program 3 times [2024-01-31 16:06:09,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:09,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818015568] [2024-01-31 16:06:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:09,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:09,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818015568] [2024-01-31 16:06:09,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818015568] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:09,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:09,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:09,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156778483] [2024-01-31 16:06:09,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:09,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:09,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:09,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:09,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:09,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:09,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 571 transitions, 13231 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:09,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:09,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:09,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:11,382 INFO L124 PetriNetUnfolderBase]: 3580/7204 cut-off events. [2024-01-31 16:06:11,382 INFO L125 PetriNetUnfolderBase]: For 226162/227308 co-relation queries the response was YES. [2024-01-31 16:06:11,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55519 conditions, 7204 events. 3580/7204 cut-off events. For 226162/227308 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 59171 event pairs, 1154 based on Foata normal form. 67/7079 useless extension candidates. Maximal degree in co-relation 55398. Up to 4984 conditions per place. [2024-01-31 16:06:11,487 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 543 selfloop transitions, 88 changer transitions 11/674 dead transitions. [2024-01-31 16:06:11,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 674 transitions, 15636 flow [2024-01-31 16:06:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:06:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:06:11,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 378 transitions. [2024-01-31 16:06:11,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-01-31 16:06:11,488 INFO L175 Difference]: Start difference. First operand has 441 places, 571 transitions, 13231 flow. Second operand 12 states and 378 transitions. [2024-01-31 16:06:11,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 674 transitions, 15636 flow [2024-01-31 16:06:12,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 674 transitions, 15049 flow, removed 13 selfloop flow, removed 18 redundant places. [2024-01-31 16:06:12,325 INFO L231 Difference]: Finished difference. Result has 435 places, 562 transitions, 12627 flow [2024-01-31 16:06:12,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12648, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12627, PETRI_PLACES=435, PETRI_TRANSITIONS=562} [2024-01-31 16:06:12,326 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 358 predicate places. [2024-01-31 16:06:12,326 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 562 transitions, 12627 flow [2024-01-31 16:06:12,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:12,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:12,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:12,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-01-31 16:06:12,326 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:12,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:12,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1313171704, now seen corresponding path program 4 times [2024-01-31 16:06:12,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:12,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107849361] [2024-01-31 16:06:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:12,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:12,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107849361] [2024-01-31 16:06:12,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107849361] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:12,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:12,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990256076] [2024-01-31 16:06:12,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:12,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:12,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:12,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:12,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 562 transitions, 12627 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:12,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:12,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:12,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:14,475 INFO L124 PetriNetUnfolderBase]: 3503/7074 cut-off events. [2024-01-31 16:06:14,476 INFO L125 PetriNetUnfolderBase]: For 212276/213385 co-relation queries the response was YES. [2024-01-31 16:06:14,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53524 conditions, 7074 events. 3503/7074 cut-off events. For 212276/213385 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 57957 event pairs, 1133 based on Foata normal form. 61/6949 useless extension candidates. Maximal degree in co-relation 53406. Up to 4984 conditions per place. [2024-01-31 16:06:14,566 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 512 selfloop transitions, 92 changer transitions 20/656 dead transitions. [2024-01-31 16:06:14,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 656 transitions, 14832 flow [2024-01-31 16:06:14,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:06:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:06:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 399 transitions. [2024-01-31 16:06:14,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204425711275026 [2024-01-31 16:06:14,567 INFO L175 Difference]: Start difference. First operand has 435 places, 562 transitions, 12627 flow. Second operand 13 states and 399 transitions. [2024-01-31 16:06:14,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 656 transitions, 14832 flow [2024-01-31 16:06:15,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 656 transitions, 14653 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-31 16:06:15,310 INFO L231 Difference]: Finished difference. Result has 438 places, 545 transitions, 12347 flow [2024-01-31 16:06:15,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12448, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12347, PETRI_PLACES=438, PETRI_TRANSITIONS=545} [2024-01-31 16:06:15,311 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 361 predicate places. [2024-01-31 16:06:15,311 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 545 transitions, 12347 flow [2024-01-31 16:06:15,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:15,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:15,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:15,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-01-31 16:06:15,311 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:15,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:15,311 INFO L85 PathProgramCache]: Analyzing trace with hash 831130252, now seen corresponding path program 5 times [2024-01-31 16:06:15,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:15,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75978451] [2024-01-31 16:06:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:15,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:15,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75978451] [2024-01-31 16:06:15,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75978451] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:15,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:15,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:15,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601867601] [2024-01-31 16:06:15,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:15,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:15,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:15,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:15,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 545 transitions, 12347 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:15,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:15,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:15,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:17,534 INFO L124 PetriNetUnfolderBase]: 3435/6938 cut-off events. [2024-01-31 16:06:17,534 INFO L125 PetriNetUnfolderBase]: For 206527/207635 co-relation queries the response was YES. [2024-01-31 16:06:17,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52580 conditions, 6938 events. 3435/6938 cut-off events. For 206527/207635 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 56673 event pairs, 1114 based on Foata normal form. 50/6800 useless extension candidates. Maximal degree in co-relation 52461. Up to 4984 conditions per place. [2024-01-31 16:06:17,623 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 513 selfloop transitions, 82 changer transitions 6/633 dead transitions. [2024-01-31 16:06:17,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 633 transitions, 14446 flow [2024-01-31 16:06:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 345 transitions. [2024-01-31 16:06:17,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42963885429638854 [2024-01-31 16:06:17,624 INFO L175 Difference]: Start difference. First operand has 438 places, 545 transitions, 12347 flow. Second operand 11 states and 345 transitions. [2024-01-31 16:06:17,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 633 transitions, 14446 flow [2024-01-31 16:06:18,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 633 transitions, 14297 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-01-31 16:06:18,354 INFO L231 Difference]: Finished difference. Result has 438 places, 540 transitions, 12271 flow [2024-01-31 16:06:18,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12198, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12271, PETRI_PLACES=438, PETRI_TRANSITIONS=540} [2024-01-31 16:06:18,354 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 361 predicate places. [2024-01-31 16:06:18,355 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 540 transitions, 12271 flow [2024-01-31 16:06:18,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:18,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:18,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:18,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-01-31 16:06:18,355 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:18,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash -787155772, now seen corresponding path program 7 times [2024-01-31 16:06:18,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:18,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540949333] [2024-01-31 16:06:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:18,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:18,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:18,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540949333] [2024-01-31 16:06:18,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540949333] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:18,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:18,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:18,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036903622] [2024-01-31 16:06:18,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:18,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:18,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:18,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:18,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:18,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:18,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 540 transitions, 12271 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:18,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:18,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:18,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:20,370 INFO L124 PetriNetUnfolderBase]: 3225/6730 cut-off events. [2024-01-31 16:06:20,371 INFO L125 PetriNetUnfolderBase]: For 212865/213342 co-relation queries the response was YES. [2024-01-31 16:06:20,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50861 conditions, 6730 events. 3225/6730 cut-off events. For 212865/213342 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 56006 event pairs, 839 based on Foata normal form. 132/6715 useless extension candidates. Maximal degree in co-relation 50741. Up to 1908 conditions per place. [2024-01-31 16:06:20,457 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 406 selfloop transitions, 123 changer transitions 31/594 dead transitions. [2024-01-31 16:06:20,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 594 transitions, 14018 flow [2024-01-31 16:06:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:20,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-01-31 16:06:20,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:06:20,458 INFO L175 Difference]: Start difference. First operand has 438 places, 540 transitions, 12271 flow. Second operand 9 states and 292 transitions. [2024-01-31 16:06:20,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 594 transitions, 14018 flow [2024-01-31 16:06:21,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 594 transitions, 13840 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-31 16:06:21,259 INFO L231 Difference]: Finished difference. Result has 437 places, 509 transitions, 11809 flow [2024-01-31 16:06:21,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12093, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11809, PETRI_PLACES=437, PETRI_TRANSITIONS=509} [2024-01-31 16:06:21,260 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-01-31 16:06:21,260 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 509 transitions, 11809 flow [2024-01-31 16:06:21,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:21,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:21,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-01-31 16:06:21,260 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:21,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1523903606, now seen corresponding path program 8 times [2024-01-31 16:06:21,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:21,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319785726] [2024-01-31 16:06:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:21,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:21,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:21,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319785726] [2024-01-31 16:06:21,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319785726] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:21,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:21,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:21,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629313508] [2024-01-31 16:06:21,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:21,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:21,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:21,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:21,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:21,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:21,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 509 transitions, 11809 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:21,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:21,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:21,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:23,319 INFO L124 PetriNetUnfolderBase]: 3065/6445 cut-off events. [2024-01-31 16:06:23,319 INFO L125 PetriNetUnfolderBase]: For 207380/207844 co-relation queries the response was YES. [2024-01-31 16:06:23,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48980 conditions, 6445 events. 3065/6445 cut-off events. For 207380/207844 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 53397 event pairs, 744 based on Foata normal form. 92/6408 useless extension candidates. Maximal degree in co-relation 48859. Up to 3299 conditions per place. [2024-01-31 16:06:23,403 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 388 selfloop transitions, 137 changer transitions 7/566 dead transitions. [2024-01-31 16:06:23,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 566 transitions, 13480 flow [2024-01-31 16:06:23,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 343 transitions. [2024-01-31 16:06:23,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42714819427148193 [2024-01-31 16:06:23,404 INFO L175 Difference]: Start difference. First operand has 437 places, 509 transitions, 11809 flow. Second operand 11 states and 343 transitions. [2024-01-31 16:06:23,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 566 transitions, 13480 flow [2024-01-31 16:06:24,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 566 transitions, 12932 flow, removed 10 selfloop flow, removed 25 redundant places. [2024-01-31 16:06:24,194 INFO L231 Difference]: Finished difference. Result has 421 places, 500 transitions, 11433 flow [2024-01-31 16:06:24,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11191, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11433, PETRI_PLACES=421, PETRI_TRANSITIONS=500} [2024-01-31 16:06:24,195 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-01-31 16:06:24,195 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 500 transitions, 11433 flow [2024-01-31 16:06:24,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:24,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:24,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:24,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-01-31 16:06:24,196 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:24,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:24,196 INFO L85 PathProgramCache]: Analyzing trace with hash -705251146, now seen corresponding path program 6 times [2024-01-31 16:06:24,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:24,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693784852] [2024-01-31 16:06:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:24,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:24,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:24,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693784852] [2024-01-31 16:06:24,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693784852] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:24,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:24,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:24,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897431508] [2024-01-31 16:06:24,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:24,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:24,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:24,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:24,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:24,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 500 transitions, 11433 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:24,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:24,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:24,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:26,239 INFO L124 PetriNetUnfolderBase]: 3197/6465 cut-off events. [2024-01-31 16:06:26,239 INFO L125 PetriNetUnfolderBase]: For 191426/192427 co-relation queries the response was YES. [2024-01-31 16:06:26,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48883 conditions, 6465 events. 3197/6465 cut-off events. For 191426/192427 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 51986 event pairs, 993 based on Foata normal form. 65/6379 useless extension candidates. Maximal degree in co-relation 48773. Up to 4483 conditions per place. [2024-01-31 16:06:26,308 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 493 selfloop transitions, 65 changer transitions 11/598 dead transitions. [2024-01-31 16:06:26,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 598 transitions, 13639 flow [2024-01-31 16:06:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:26,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 346 transitions. [2024-01-31 16:06:26,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43088418430884184 [2024-01-31 16:06:26,310 INFO L175 Difference]: Start difference. First operand has 421 places, 500 transitions, 11433 flow. Second operand 11 states and 346 transitions. [2024-01-31 16:06:26,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 598 transitions, 13639 flow [2024-01-31 16:06:26,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 598 transitions, 13335 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-01-31 16:06:26,935 INFO L231 Difference]: Finished difference. Result has 420 places, 491 transitions, 11060 flow [2024-01-31 16:06:26,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11133, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11060, PETRI_PLACES=420, PETRI_TRANSITIONS=491} [2024-01-31 16:06:26,943 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 343 predicate places. [2024-01-31 16:06:26,943 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 491 transitions, 11060 flow [2024-01-31 16:06:26,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:26,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:26,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:26,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-01-31 16:06:26,943 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:26,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1496067430, now seen corresponding path program 7 times [2024-01-31 16:06:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:26,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407404366] [2024-01-31 16:06:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:26,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:27,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:27,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407404366] [2024-01-31 16:06:27,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407404366] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:27,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:27,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:27,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893452378] [2024-01-31 16:06:27,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:27,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:27,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:27,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:27,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:27,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:27,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 491 transitions, 11060 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:27,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:27,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:27,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:28,877 INFO L124 PetriNetUnfolderBase]: 3136/6370 cut-off events. [2024-01-31 16:06:28,878 INFO L125 PetriNetUnfolderBase]: For 179402/180406 co-relation queries the response was YES. [2024-01-31 16:06:28,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48063 conditions, 6370 events. 3136/6370 cut-off events. For 179402/180406 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 51332 event pairs, 828 based on Foata normal form. 80/6314 useless extension candidates. Maximal degree in co-relation 47956. Up to 2639 conditions per place. [2024-01-31 16:06:28,956 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 466 selfloop transitions, 95 changer transitions 10/600 dead transitions. [2024-01-31 16:06:28,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 600 transitions, 13372 flow [2024-01-31 16:06:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:06:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:06:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 406 transitions. [2024-01-31 16:06:28,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42781875658587987 [2024-01-31 16:06:28,957 INFO L175 Difference]: Start difference. First operand has 420 places, 491 transitions, 11060 flow. Second operand 13 states and 406 transitions. [2024-01-31 16:06:28,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 600 transitions, 13372 flow [2024-01-31 16:06:29,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 600 transitions, 13178 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-01-31 16:06:29,548 INFO L231 Difference]: Finished difference. Result has 423 places, 483 transitions, 10941 flow [2024-01-31 16:06:29,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10866, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10941, PETRI_PLACES=423, PETRI_TRANSITIONS=483} [2024-01-31 16:06:29,549 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-01-31 16:06:29,549 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 483 transitions, 10941 flow [2024-01-31 16:06:29,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:29,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:29,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:29,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-01-31 16:06:29,549 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:29,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash -774949568, now seen corresponding path program 8 times [2024-01-31 16:06:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:29,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435056104] [2024-01-31 16:06:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:29,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:29,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:29,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435056104] [2024-01-31 16:06:29,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435056104] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:29,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:29,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:29,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071133692] [2024-01-31 16:06:29,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:29,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:29,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:29,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:29,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:29,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:29,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 483 transitions, 10941 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:29,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:29,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:29,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:31,346 INFO L124 PetriNetUnfolderBase]: 3093/6274 cut-off events. [2024-01-31 16:06:31,346 INFO L125 PetriNetUnfolderBase]: For 173749/174734 co-relation queries the response was YES. [2024-01-31 16:06:31,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47319 conditions, 6274 events. 3093/6274 cut-off events. For 173749/174734 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 50393 event pairs, 994 based on Foata normal form. 65/6196 useless extension candidates. Maximal degree in co-relation 47211. Up to 4438 conditions per place. [2024-01-31 16:06:31,428 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 457 selfloop transitions, 65 changer transitions 20/571 dead transitions. [2024-01-31 16:06:31,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 571 transitions, 12921 flow [2024-01-31 16:06:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 344 transitions. [2024-01-31 16:06:31,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42839352428393523 [2024-01-31 16:06:31,429 INFO L175 Difference]: Start difference. First operand has 423 places, 483 transitions, 10941 flow. Second operand 11 states and 344 transitions. [2024-01-31 16:06:31,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 571 transitions, 12921 flow [2024-01-31 16:06:32,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 571 transitions, 12734 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-01-31 16:06:32,016 INFO L231 Difference]: Finished difference. Result has 421 places, 466 transitions, 10553 flow [2024-01-31 16:06:32,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10754, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10553, PETRI_PLACES=421, PETRI_TRANSITIONS=466} [2024-01-31 16:06:32,017 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-01-31 16:06:32,017 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 466 transitions, 10553 flow [2024-01-31 16:06:32,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:32,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:32,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:32,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-01-31 16:06:32,018 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:32,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1988617872, now seen corresponding path program 9 times [2024-01-31 16:06:32,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:32,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225700092] [2024-01-31 16:06:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:32,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:32,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225700092] [2024-01-31 16:06:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225700092] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:32,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:32,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:32,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854156834] [2024-01-31 16:06:32,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:32,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:32,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:32,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:32,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:32,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:32,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 466 transitions, 10553 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:32,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:32,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:32,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:33,875 INFO L124 PetriNetUnfolderBase]: 3042/6169 cut-off events. [2024-01-31 16:06:33,875 INFO L125 PetriNetUnfolderBase]: For 166266/167235 co-relation queries the response was YES. [2024-01-31 16:06:33,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46534 conditions, 6169 events. 3042/6169 cut-off events. For 166266/167235 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49201 event pairs, 809 based on Foata normal form. 70/6103 useless extension candidates. Maximal degree in co-relation 46425. Up to 2643 conditions per place. [2024-01-31 16:06:33,934 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 396 selfloop transitions, 122 changer transitions 8/555 dead transitions. [2024-01-31 16:06:33,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 555 transitions, 12510 flow [2024-01-31 16:06:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:06:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:06:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 369 transitions. [2024-01-31 16:06:33,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-01-31 16:06:33,935 INFO L175 Difference]: Start difference. First operand has 421 places, 466 transitions, 10553 flow. Second operand 12 states and 369 transitions. [2024-01-31 16:06:33,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 555 transitions, 12510 flow [2024-01-31 16:06:34,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 555 transitions, 12378 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-31 16:06:34,416 INFO L231 Difference]: Finished difference. Result has 423 places, 459 transitions, 10552 flow [2024-01-31 16:06:34,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10421, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10552, PETRI_PLACES=423, PETRI_TRANSITIONS=459} [2024-01-31 16:06:34,416 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-01-31 16:06:34,416 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 459 transitions, 10552 flow [2024-01-31 16:06:34,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:34,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:34,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:34,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-01-31 16:06:34,417 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:34,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:34,417 INFO L85 PathProgramCache]: Analyzing trace with hash -966709928, now seen corresponding path program 10 times [2024-01-31 16:06:34,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:34,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633574623] [2024-01-31 16:06:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:34,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:34,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633574623] [2024-01-31 16:06:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633574623] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:34,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700502722] [2024-01-31 16:06:34,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:34,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:34,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:34,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:34,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:34,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:34,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 459 transitions, 10552 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:34,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:34,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:34,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:36,312 INFO L124 PetriNetUnfolderBase]: 3016/6109 cut-off events. [2024-01-31 16:06:36,312 INFO L125 PetriNetUnfolderBase]: For 169398/170364 co-relation queries the response was YES. [2024-01-31 16:06:36,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46312 conditions, 6109 events. 3016/6109 cut-off events. For 169398/170364 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 48656 event pairs, 970 based on Foata normal form. 56/6022 useless extension candidates. Maximal degree in co-relation 46202. Up to 4393 conditions per place. [2024-01-31 16:06:36,390 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 447 selfloop transitions, 49 changer transitions 26/551 dead transitions. [2024-01-31 16:06:36,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 551 transitions, 12482 flow [2024-01-31 16:06:36,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:06:36,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:06:36,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 367 transitions. [2024-01-31 16:06:36,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189497716894977 [2024-01-31 16:06:36,391 INFO L175 Difference]: Start difference. First operand has 423 places, 459 transitions, 10552 flow. Second operand 12 states and 367 transitions. [2024-01-31 16:06:36,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 551 transitions, 12482 flow [2024-01-31 16:06:36,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 551 transitions, 12275 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-31 16:06:36,948 INFO L231 Difference]: Finished difference. Result has 423 places, 437 transitions, 10022 flow [2024-01-31 16:06:36,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10345, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10022, PETRI_PLACES=423, PETRI_TRANSITIONS=437} [2024-01-31 16:06:36,948 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-01-31 16:06:36,948 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 437 transitions, 10022 flow [2024-01-31 16:06:36,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:36,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:36,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:36,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-01-31 16:06:36,949 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:36,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:36,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2059524480, now seen corresponding path program 11 times [2024-01-31 16:06:36,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:36,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279787854] [2024-01-31 16:06:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:36,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:37,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:37,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279787854] [2024-01-31 16:06:37,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279787854] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:37,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:37,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:37,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361502580] [2024-01-31 16:06:37,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:37,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:37,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:37,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:37,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:37,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:37,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 437 transitions, 10022 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:37,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:37,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:37,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:38,590 INFO L124 PetriNetUnfolderBase]: 2924/5954 cut-off events. [2024-01-31 16:06:38,590 INFO L125 PetriNetUnfolderBase]: For 158686/159650 co-relation queries the response was YES. [2024-01-31 16:06:38,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45083 conditions, 5954 events. 2924/5954 cut-off events. For 158686/159650 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 47118 event pairs, 841 based on Foata normal form. 89/5925 useless extension candidates. Maximal degree in co-relation 44972. Up to 1958 conditions per place. [2024-01-31 16:06:38,660 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 349 selfloop transitions, 108 changer transitions 13/497 dead transitions. [2024-01-31 16:06:38,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 497 transitions, 11620 flow [2024-01-31 16:06:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-01-31 16:06:38,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:06:38,661 INFO L175 Difference]: Start difference. First operand has 423 places, 437 transitions, 10022 flow. Second operand 9 states and 292 transitions. [2024-01-31 16:06:38,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 497 transitions, 11620 flow [2024-01-31 16:06:39,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 497 transitions, 11519 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-01-31 16:06:39,199 INFO L231 Difference]: Finished difference. Result has 421 places, 425 transitions, 9932 flow [2024-01-31 16:06:39,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9921, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9932, PETRI_PLACES=421, PETRI_TRANSITIONS=425} [2024-01-31 16:06:39,200 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-01-31 16:06:39,200 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 425 transitions, 9932 flow [2024-01-31 16:06:39,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:39,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:39,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:39,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-01-31 16:06:39,200 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:39,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash -255855452, now seen corresponding path program 12 times [2024-01-31 16:06:39,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:39,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595222534] [2024-01-31 16:06:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:39,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:39,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:39,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595222534] [2024-01-31 16:06:39,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595222534] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:39,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599342127] [2024-01-31 16:06:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:39,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:39,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:39,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:39,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 425 transitions, 9932 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:39,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:39,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:39,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:40,829 INFO L124 PetriNetUnfolderBase]: 2847/5823 cut-off events. [2024-01-31 16:06:40,829 INFO L125 PetriNetUnfolderBase]: For 160921/161860 co-relation queries the response was YES. [2024-01-31 16:06:40,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44280 conditions, 5823 events. 2847/5823 cut-off events. For 160921/161860 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 46014 event pairs, 830 based on Foata normal form. 74/5788 useless extension candidates. Maximal degree in co-relation 44168. Up to 1958 conditions per place. [2024-01-31 16:06:40,898 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 347 selfloop transitions, 92 changer transitions 20/485 dead transitions. [2024-01-31 16:06:40,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 485 transitions, 11440 flow [2024-01-31 16:06:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:06:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:06:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-01-31 16:06:40,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328767123287671 [2024-01-31 16:06:40,899 INFO L175 Difference]: Start difference. First operand has 421 places, 425 transitions, 9932 flow. Second operand 10 states and 316 transitions. [2024-01-31 16:06:40,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 485 transitions, 11440 flow [2024-01-31 16:06:41,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 485 transitions, 11031 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-01-31 16:06:41,588 INFO L231 Difference]: Finished difference. Result has 418 places, 406 transitions, 9423 flow [2024-01-31 16:06:41,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9539, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9423, PETRI_PLACES=418, PETRI_TRANSITIONS=406} [2024-01-31 16:06:41,589 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 341 predicate places. [2024-01-31 16:06:41,589 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 406 transitions, 9423 flow [2024-01-31 16:06:41,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:41,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:41,589 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, 1, 1] [2024-01-31 16:06:41,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-01-31 16:06:41,589 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:41,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1783134488, now seen corresponding path program 13 times [2024-01-31 16:06:41,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:41,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067208844] [2024-01-31 16:06:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:41,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:41,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:41,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:41,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067208844] [2024-01-31 16:06:41,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067208844] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:41,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:41,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:41,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817893855] [2024-01-31 16:06:41,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:41,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:41,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:41,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:41,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:41,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 406 transitions, 9423 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:41,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:41,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:41,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:43,255 INFO L124 PetriNetUnfolderBase]: 2755/5652 cut-off events. [2024-01-31 16:06:43,256 INFO L125 PetriNetUnfolderBase]: For 141926/142832 co-relation queries the response was YES. [2024-01-31 16:06:43,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42320 conditions, 5652 events. 2755/5652 cut-off events. For 141926/142832 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 44429 event pairs, 810 based on Foata normal form. 57/5593 useless extension candidates. Maximal degree in co-relation 42212. Up to 1958 conditions per place. [2024-01-31 16:06:43,319 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 301 selfloop transitions, 104 changer transitions 23/454 dead transitions. [2024-01-31 16:06:43,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 454 transitions, 10652 flow [2024-01-31 16:06:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 287 transitions. [2024-01-31 16:06:43,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368340943683409 [2024-01-31 16:06:43,320 INFO L175 Difference]: Start difference. First operand has 418 places, 406 transitions, 9423 flow. Second operand 9 states and 287 transitions. [2024-01-31 16:06:43,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 454 transitions, 10652 flow [2024-01-31 16:06:43,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 454 transitions, 10093 flow, removed 13 selfloop flow, removed 20 redundant places. [2024-01-31 16:06:43,770 INFO L231 Difference]: Finished difference. Result has 407 places, 383 transitions, 8723 flow [2024-01-31 16:06:43,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8872, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8723, PETRI_PLACES=407, PETRI_TRANSITIONS=383} [2024-01-31 16:06:43,770 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-01-31 16:06:43,770 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 383 transitions, 8723 flow [2024-01-31 16:06:43,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:43,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:43,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:43,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-01-31 16:06:43,771 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:43,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash -459069398, now seen corresponding path program 14 times [2024-01-31 16:06:43,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:43,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960431443] [2024-01-31 16:06:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:44,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:44,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960431443] [2024-01-31 16:06:44,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960431443] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:44,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:44,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:44,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621241259] [2024-01-31 16:06:44,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:44,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:44,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:44,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:44,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 383 transitions, 8723 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:44,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:44,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:44,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:45,419 INFO L124 PetriNetUnfolderBase]: 2726/5629 cut-off events. [2024-01-31 16:06:45,420 INFO L125 PetriNetUnfolderBase]: For 121077/121974 co-relation queries the response was YES. [2024-01-31 16:06:45,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41402 conditions, 5629 events. 2726/5629 cut-off events. For 121077/121974 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 44579 event pairs, 642 based on Foata normal form. 64/5575 useless extension candidates. Maximal degree in co-relation 41299. Up to 2756 conditions per place. [2024-01-31 16:06:45,474 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 323 selfloop transitions, 100 changer transitions 6/455 dead transitions. [2024-01-31 16:06:45,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 455 transitions, 10298 flow [2024-01-31 16:06:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:06:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:06:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2024-01-31 16:06:45,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438356164383562 [2024-01-31 16:06:45,475 INFO L175 Difference]: Start difference. First operand has 407 places, 383 transitions, 8723 flow. Second operand 10 states and 324 transitions. [2024-01-31 16:06:45,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 455 transitions, 10298 flow [2024-01-31 16:06:45,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 455 transitions, 9802 flow, removed 16 selfloop flow, removed 21 redundant places. [2024-01-31 16:06:45,820 INFO L231 Difference]: Finished difference. Result has 396 places, 379 transitions, 8388 flow [2024-01-31 16:06:45,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8245, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8388, PETRI_PLACES=396, PETRI_TRANSITIONS=379} [2024-01-31 16:06:45,820 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 319 predicate places. [2024-01-31 16:06:45,820 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 379 transitions, 8388 flow [2024-01-31 16:06:45,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:45,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:45,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:45,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-01-31 16:06:45,821 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:45,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash 517959024, now seen corresponding path program 15 times [2024-01-31 16:06:45,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:45,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146766293] [2024-01-31 16:06:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:45,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:46,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:46,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146766293] [2024-01-31 16:06:46,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146766293] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:46,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:46,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:46,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723527023] [2024-01-31 16:06:46,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:46,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:46,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:46,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:46,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:46,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:46,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 379 transitions, 8388 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:46,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:46,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:46,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:47,340 INFO L124 PetriNetUnfolderBase]: 2684/5570 cut-off events. [2024-01-31 16:06:47,340 INFO L125 PetriNetUnfolderBase]: For 108607/109428 co-relation queries the response was YES. [2024-01-31 16:06:47,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40284 conditions, 5570 events. 2684/5570 cut-off events. For 108607/109428 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 44032 event pairs, 549 based on Foata normal form. 64/5519 useless extension candidates. Maximal degree in co-relation 40185. Up to 2402 conditions per place. [2024-01-31 16:06:47,403 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 282 selfloop transitions, 126 changer transitions 6/440 dead transitions. [2024-01-31 16:06:47,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 440 transitions, 9733 flow [2024-01-31 16:06:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:47,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:47,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 346 transitions. [2024-01-31 16:06:47,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43088418430884184 [2024-01-31 16:06:47,404 INFO L175 Difference]: Start difference. First operand has 396 places, 379 transitions, 8388 flow. Second operand 11 states and 346 transitions. [2024-01-31 16:06:47,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 440 transitions, 9733 flow [2024-01-31 16:06:47,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 440 transitions, 9515 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:06:47,771 INFO L231 Difference]: Finished difference. Result has 399 places, 375 transitions, 8411 flow [2024-01-31 16:06:47,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8170, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8411, PETRI_PLACES=399, PETRI_TRANSITIONS=375} [2024-01-31 16:06:47,772 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 322 predicate places. [2024-01-31 16:06:47,772 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 375 transitions, 8411 flow [2024-01-31 16:06:47,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:47,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:47,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:47,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-01-31 16:06:47,772 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:47,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1725096586, now seen corresponding path program 16 times [2024-01-31 16:06:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475646217] [2024-01-31 16:06:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:47,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:48,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:48,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475646217] [2024-01-31 16:06:48,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475646217] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:48,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:48,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918269490] [2024-01-31 16:06:48,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:48,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:48,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:48,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 375 transitions, 8411 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:48,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:48,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:48,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:49,311 INFO L124 PetriNetUnfolderBase]: 2656/5535 cut-off events. [2024-01-31 16:06:49,312 INFO L125 PetriNetUnfolderBase]: For 107327/108155 co-relation queries the response was YES. [2024-01-31 16:06:49,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41017 conditions, 5535 events. 2656/5535 cut-off events. For 107327/108155 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 43851 event pairs, 621 based on Foata normal form. 62/5477 useless extension candidates. Maximal degree in co-relation 40917. Up to 2786 conditions per place. [2024-01-31 16:06:49,362 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 324 selfloop transitions, 97 changer transitions 9/456 dead transitions. [2024-01-31 16:06:49,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 456 transitions, 10053 flow [2024-01-31 16:06:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:06:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:06:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 382 transitions. [2024-01-31 16:06:49,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360730593607306 [2024-01-31 16:06:49,363 INFO L175 Difference]: Start difference. First operand has 399 places, 375 transitions, 8411 flow. Second operand 12 states and 382 transitions. [2024-01-31 16:06:49,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 456 transitions, 10053 flow [2024-01-31 16:06:49,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 456 transitions, 9637 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-01-31 16:06:49,698 INFO L231 Difference]: Finished difference. Result has 398 places, 368 transitions, 8118 flow [2024-01-31 16:06:49,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8014, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8118, PETRI_PLACES=398, PETRI_TRANSITIONS=368} [2024-01-31 16:06:49,698 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 321 predicate places. [2024-01-31 16:06:49,698 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 368 transitions, 8118 flow [2024-01-31 16:06:49,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:49,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:49,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:49,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-01-31 16:06:49,699 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:49,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:49,699 INFO L85 PathProgramCache]: Analyzing trace with hash -529612934, now seen corresponding path program 17 times [2024-01-31 16:06:49,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:49,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569124135] [2024-01-31 16:06:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:49,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:49,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:49,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569124135] [2024-01-31 16:06:49,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569124135] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:49,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:49,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:49,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809074647] [2024-01-31 16:06:49,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:49,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:49,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:49,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:49,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:49,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:49,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 368 transitions, 8118 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:49,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:49,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:49,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:51,208 INFO L124 PetriNetUnfolderBase]: 2640/5518 cut-off events. [2024-01-31 16:06:51,208 INFO L125 PetriNetUnfolderBase]: For 97248/98024 co-relation queries the response was YES. [2024-01-31 16:06:51,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40483 conditions, 5518 events. 2640/5518 cut-off events. For 97248/98024 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 43679 event pairs, 544 based on Foata normal form. 58/5459 useless extension candidates. Maximal degree in co-relation 40385. Up to 2402 conditions per place. [2024-01-31 16:06:51,265 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 281 selfloop transitions, 121 changer transitions 10/438 dead transitions. [2024-01-31 16:06:51,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 438 transitions, 9527 flow [2024-01-31 16:06:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:06:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:06:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 404 transitions. [2024-01-31 16:06:51,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42571127502634354 [2024-01-31 16:06:51,266 INFO L175 Difference]: Start difference. First operand has 398 places, 368 transitions, 8118 flow. Second operand 13 states and 404 transitions. [2024-01-31 16:06:51,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 438 transitions, 9527 flow [2024-01-31 16:06:51,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 438 transitions, 9307 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-01-31 16:06:51,608 INFO L231 Difference]: Finished difference. Result has 398 places, 359 transitions, 8037 flow [2024-01-31 16:06:51,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7900, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8037, PETRI_PLACES=398, PETRI_TRANSITIONS=359} [2024-01-31 16:06:51,608 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 321 predicate places. [2024-01-31 16:06:51,609 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 359 transitions, 8037 flow [2024-01-31 16:06:51,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:51,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:51,609 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] [2024-01-31 16:06:51,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-01-31 16:06:51,609 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:51,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash 379738064, now seen corresponding path program 18 times [2024-01-31 16:06:51,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:51,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84701723] [2024-01-31 16:06:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:51,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:51,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:51,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84701723] [2024-01-31 16:06:51,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84701723] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:51,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:51,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:51,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900763946] [2024-01-31 16:06:51,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:51,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:51,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:51,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:51,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:51,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:51,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 359 transitions, 8037 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:51,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:51,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:51,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:53,128 INFO L124 PetriNetUnfolderBase]: 2614/5461 cut-off events. [2024-01-31 16:06:53,128 INFO L125 PetriNetUnfolderBase]: For 92630/93434 co-relation queries the response was YES. [2024-01-31 16:06:53,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40475 conditions, 5461 events. 2614/5461 cut-off events. For 92630/93434 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 43109 event pairs, 633 based on Foata normal form. 48/5389 useless extension candidates. Maximal degree in co-relation 40377. Up to 2548 conditions per place. [2024-01-31 16:06:53,184 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 248 selfloop transitions, 138 changer transitions 11/423 dead transitions. [2024-01-31 16:06:53,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 423 transitions, 9374 flow [2024-01-31 16:06:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 344 transitions. [2024-01-31 16:06:53,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42839352428393523 [2024-01-31 16:06:53,185 INFO L175 Difference]: Start difference. First operand has 398 places, 359 transitions, 8037 flow. Second operand 11 states and 344 transitions. [2024-01-31 16:06:53,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 423 transitions, 9374 flow [2024-01-31 16:06:53,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 423 transitions, 8941 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-01-31 16:06:53,511 INFO L231 Difference]: Finished difference. Result has 387 places, 349 transitions, 7738 flow [2024-01-31 16:06:53,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7614, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7738, PETRI_PLACES=387, PETRI_TRANSITIONS=349} [2024-01-31 16:06:53,512 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 310 predicate places. [2024-01-31 16:06:53,512 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 349 transitions, 7738 flow [2024-01-31 16:06:53,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:53,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:53,512 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, 1, 1] [2024-01-31 16:06:53,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-01-31 16:06:53,512 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:53,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash -364860486, now seen corresponding path program 19 times [2024-01-31 16:06:53,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:53,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998291001] [2024-01-31 16:06:53,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:53,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:53,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:53,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998291001] [2024-01-31 16:06:53,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998291001] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:53,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:53,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:53,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985860127] [2024-01-31 16:06:53,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:53,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:53,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:53,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:53,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:53,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:53,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 349 transitions, 7738 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:53,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:53,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:53,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:54,954 INFO L124 PetriNetUnfolderBase]: 2608/5506 cut-off events. [2024-01-31 16:06:54,954 INFO L125 PetriNetUnfolderBase]: For 90760/91510 co-relation queries the response was YES. [2024-01-31 16:06:55,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40495 conditions, 5506 events. 2608/5506 cut-off events. For 90760/91510 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 43695 event pairs, 549 based on Foata normal form. 54/5449 useless extension candidates. Maximal degree in co-relation 40401. Up to 2352 conditions per place. [2024-01-31 16:06:55,027 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 220 selfloop transitions, 155 changer transitions 10/411 dead transitions. [2024-01-31 16:06:55,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 411 transitions, 9000 flow [2024-01-31 16:06:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:06:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:06:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 374 transitions. [2024-01-31 16:06:55,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269406392694064 [2024-01-31 16:06:55,028 INFO L175 Difference]: Start difference. First operand has 387 places, 349 transitions, 7738 flow. Second operand 12 states and 374 transitions. [2024-01-31 16:06:55,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 411 transitions, 9000 flow [2024-01-31 16:06:55,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 411 transitions, 8706 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-01-31 16:06:55,389 INFO L231 Difference]: Finished difference. Result has 383 places, 340 transitions, 7616 flow [2024-01-31 16:06:55,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7446, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7616, PETRI_PLACES=383, PETRI_TRANSITIONS=340} [2024-01-31 16:06:55,389 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 306 predicate places. [2024-01-31 16:06:55,389 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 340 transitions, 7616 flow [2024-01-31 16:06:55,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:55,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:55,389 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, 1, 1] [2024-01-31 16:06:55,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-01-31 16:06:55,389 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:55,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -502223712, now seen corresponding path program 20 times [2024-01-31 16:06:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:55,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251696559] [2024-01-31 16:06:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:55,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:55,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251696559] [2024-01-31 16:06:55,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251696559] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:55,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:55,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:06:55,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310276168] [2024-01-31 16:06:55,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:55,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:06:55,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:55,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:06:55,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:06:55,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:55,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 340 transitions, 7616 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:55,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:55,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:55,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:56,904 INFO L124 PetriNetUnfolderBase]: 2587/5426 cut-off events. [2024-01-31 16:06:56,905 INFO L125 PetriNetUnfolderBase]: For 85885/86641 co-relation queries the response was YES. [2024-01-31 16:06:56,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40400 conditions, 5426 events. 2587/5426 cut-off events. For 85885/86641 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 42703 event pairs, 470 based on Foata normal form. 40/5349 useless extension candidates. Maximal degree in co-relation 40306. Up to 2264 conditions per place. [2024-01-31 16:06:56,963 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 198 selfloop transitions, 153 changer transitions 17/393 dead transitions. [2024-01-31 16:06:56,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 393 transitions, 8693 flow [2024-01-31 16:06:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:06:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:06:56,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 364 transitions. [2024-01-31 16:06:56,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155251141552511 [2024-01-31 16:06:56,964 INFO L175 Difference]: Start difference. First operand has 383 places, 340 transitions, 7616 flow. Second operand 12 states and 364 transitions. [2024-01-31 16:06:56,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 393 transitions, 8693 flow [2024-01-31 16:06:57,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 393 transitions, 8208 flow, removed 9 selfloop flow, removed 28 redundant places. [2024-01-31 16:06:57,268 INFO L231 Difference]: Finished difference. Result has 364 places, 322 transitions, 7191 flow [2024-01-31 16:06:57,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7069, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7191, PETRI_PLACES=364, PETRI_TRANSITIONS=322} [2024-01-31 16:06:57,269 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-01-31 16:06:57,269 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 322 transitions, 7191 flow [2024-01-31 16:06:57,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:57,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:57,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:57,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-01-31 16:06:57,269 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:57,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:57,269 INFO L85 PathProgramCache]: Analyzing trace with hash -773978686, now seen corresponding path program 1 times [2024-01-31 16:06:57,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:57,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512681870] [2024-01-31 16:06:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:57,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:06:57,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:06:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:06:57,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:06:57,320 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:06:57,321 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 60 remaining) [2024-01-31 16:06:57,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 60 remaining) [2024-01-31 16:06:57,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 60 remaining) [2024-01-31 16:06:57,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 60 remaining) [2024-01-31 16:06:57,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 60 remaining) [2024-01-31 16:06:57,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 60 remaining) [2024-01-31 16:06:57,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 60 remaining) [2024-01-31 16:06:57,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 60 remaining) [2024-01-31 16:06:57,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 60 remaining) [2024-01-31 16:06:57,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 60 remaining) [2024-01-31 16:06:57,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 60 remaining) [2024-01-31 16:06:57,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 60 remaining) [2024-01-31 16:06:57,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 60 remaining) [2024-01-31 16:06:57,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 60 remaining) [2024-01-31 16:06:57,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 60 remaining) [2024-01-31 16:06:57,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 60 remaining) [2024-01-31 16:06:57,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 60 remaining) [2024-01-31 16:06:57,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (26 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 60 remaining) [2024-01-31 16:06:57,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 60 remaining) [2024-01-31 16:06:57,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 60 remaining) [2024-01-31 16:06:57,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-01-31 16:06:57,330 INFO L445 BasicCegarLoop]: Path program histogram: [20, 20, 10, 10, 10, 9, 8, 7, 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] [2024-01-31 16:06:57,334 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:06:57,334 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:06:57,379 INFO L503 ceAbstractionStarter]: Automizer considered 33 witness invariants [2024-01-31 16:06:57,379 INFO L504 ceAbstractionStarter]: WitnessConsidered=33 [2024-01-31 16:06:57,380 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:06:57 BasicIcfg [2024-01-31 16:06:57,380 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:06:57,380 INFO L158 Benchmark]: Toolchain (without parser) took 251047.46ms. Allocated memory was 186.6MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 150.2MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 490.7MB. Max. memory is 16.1GB. [2024-01-31 16:06:57,380 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 109.1MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:06:57,380 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:06:57,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 817.23ms. Allocated memory is still 186.6MB. Free memory was 150.2MB in the beginning and 82.6MB in the end (delta: 67.7MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2024-01-31 16:06:57,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.92ms. Allocated memory is still 186.6MB. Free memory was 82.0MB in the beginning and 79.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:06:57,381 INFO L158 Benchmark]: Boogie Preprocessor took 74.61ms. Allocated memory is still 186.6MB. Free memory was 79.8MB in the beginning and 153.3MB in the end (delta: -73.5MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-01-31 16:06:57,381 INFO L158 Benchmark]: RCFGBuilder took 763.60ms. Allocated memory is still 186.6MB. Free memory was 153.3MB in the beginning and 73.6MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2024-01-31 16:06:57,381 INFO L158 Benchmark]: TraceAbstraction took 249322.95ms. Allocated memory was 186.6MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 72.6MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 412.5MB. Max. memory is 16.1GB. [2024-01-31 16:06:57,382 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 109.1MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 817.23ms. Allocated memory is still 186.6MB. Free memory was 150.2MB in the beginning and 82.6MB in the end (delta: 67.7MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.92ms. Allocated memory is still 186.6MB. Free memory was 82.0MB in the beginning and 79.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.61ms. Allocated memory is still 186.6MB. Free memory was 79.8MB in the beginning and 153.3MB in the end (delta: -73.5MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * RCFGBuilder took 763.60ms. Allocated memory is still 186.6MB. Free memory was 153.3MB in the beginning and 73.6MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * TraceAbstraction took 249322.95ms. Allocated memory was 186.6MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 72.6MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 412.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L713] 0 _Bool main$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$tmp_guard1=0, t1925={5:0}, x=0, y=0] [L762] 0 pthread_t t1926; [L763] FCALL, FORK 0 pthread_create(&t1926, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=0, y=0] [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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 invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: 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 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, 121 locations, 60 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: 249.1s, OverallIterations: 170, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 210.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14785 SdHoareTripleChecker+Valid, 33.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13422 mSDsluCounter, 3541 SdHoareTripleChecker+Invalid, 27.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3045 mSDsCounter, 2384 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49772 IncrementalHoareTripleChecker+Invalid, 52156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2384 mSolverCounterUnsat, 496 mSDtfsCounter, 49772 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1547 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14371occurred in iteration=147, InterpolantAutomatonStates: 1492, 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, 36.0s InterpolantComputationTime, 3207 NumberOfCodeBlocks, 3207 NumberOfCodeBlocksAsserted, 170 NumberOfCheckSat, 3010 ConstructedInterpolants, 0 QuantifiedInterpolants, 77654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 169 InterpolantComputations, 169 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-31 16:06:57,420 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