./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/safe033_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d8006e4b 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/safe033_tso.i ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/safe033_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-d8006e4-m [2024-02-05 10:28:49,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:28:49,176 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:28:49,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:28:49,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:28:49,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:28:49,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:28:49,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:28:49,218 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:28:49,221 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:28:49,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:28:49,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:28:49,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:28:49,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:28:49,223 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:28:49,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:28:49,223 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:28:49,223 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:28:49,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:28:49,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:28:49,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:28:49,224 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:28:49,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:28:49,225 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:28:49,225 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:28:49,225 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:28:49,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:28:49,225 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:28:49,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:28:49,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:28:49,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:28:49,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:28:49,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:28:49,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:28:49,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:28:49,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:28:49,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:28:49,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:28:49,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:28:49,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:28:49,228 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:28:49,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:28:49,228 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:28:49,228 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:28:49,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:28:49,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:28:49,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:28:49,470 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:28:49,471 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:28:49,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-02-05 10:28:50,589 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:28:50,793 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:28:50,793 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-02-05 10:28:50,813 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0c136cfc/2b278098659044019fe6d2618a8c6a37/FLAGe53f63564 [2024-02-05 10:28:50,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0c136cfc/2b278098659044019fe6d2618a8c6a37 [2024-02-05 10:28:50,829 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:28:50,830 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:28:50,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/safe033_tso.yml/witness.yml [2024-02-05 10:28:50,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:28:50,963 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:28:50,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:28:50,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:28:50,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:28:50,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:28:50" (1/2) ... [2024-02-05 10:28:50,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db29795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:50, skipping insertion in model container [2024-02-05 10:28:50,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:28:50" (1/2) ... [2024-02-05 10:28:50,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@592ea706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:50, skipping insertion in model container [2024-02-05 10:28:50,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:28:50" (2/2) ... [2024-02-05 10:28:50,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db29795 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:50, skipping insertion in model container [2024-02-05 10:28:50,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:28:50" (2/2) ... [2024-02-05 10:28:50,973 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:28:51,199 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:28:51,201 INFO L101 nessWitnessExtractor]: Location invariant before [L725-L725] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,202 INFO L101 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-02-05 10:28:51,202 INFO L101 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,202 INFO L101 nessWitnessExtractor]: Location invariant before [L761-L761] (((((__unbuffered_cnt == 0) && (__unbuffered_p0_EAX == 0)) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-02-05 10:28:51,202 INFO L101 nessWitnessExtractor]: Location invariant before [L741-L741] ((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-02-05 10:28:51,203 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 0 [2024-02-05 10:28:51,203 INFO L101 nessWitnessExtractor]: Location invariant before [L766-L766] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,203 INFO L101 nessWitnessExtractor]: Location invariant before [L740-L740] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,203 INFO L101 nessWitnessExtractor]: Location invariant before [L747-L747] (unsigned long )arg == 0UL [2024-02-05 10:28:51,203 INFO L101 nessWitnessExtractor]: Location invariant before [L772-L772] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,204 INFO L101 nessWitnessExtractor]: Location invariant before [L722-L722] (unsigned long )arg == 0UL [2024-02-05 10:28:51,204 INFO L101 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-02-05 10:28:51,204 INFO L101 nessWitnessExtractor]: Location invariant before [L769-L769] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,204 INFO L101 nessWitnessExtractor]: Location invariant before [L723-L723] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,204 INFO L101 nessWitnessExtractor]: Location invariant before [L743-L743] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,204 INFO L101 nessWitnessExtractor]: Location invariant before [L746-L746] (((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,204 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-02-05 10:28:51,205 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-02-05 10:28:51,205 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-02-05 10:28:51,205 INFO L101 nessWitnessExtractor]: Location invariant before [L720-L720] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,205 INFO L101 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,205 INFO L101 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-02-05 10:28:51,206 INFO L101 nessWitnessExtractor]: Location invariant before [L745-L745] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,206 INFO L101 nessWitnessExtractor]: Location invariant before [L744-L744] (unsigned long )arg == 0UL [2024-02-05 10:28:51,206 INFO L101 nessWitnessExtractor]: Location invariant before [L738-L738] (((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (y <= 2)) && (y <= 127)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,206 INFO L101 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-02-05 10:28:51,206 INFO L101 nessWitnessExtractor]: Location invariant before [L737-L737] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,206 INFO L101 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-02-05 10:28:51,206 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-05 10:28:51,207 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-02-05 10:28:51,207 INFO L101 nessWitnessExtractor]: Location invariant before [L719-L719] (unsigned long )arg == 0UL [2024-02-05 10:28:51,207 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-02-05 10:28:51,207 INFO L101 nessWitnessExtractor]: Location invariant before [L731-L731] (((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,207 INFO L101 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-02-05 10:28:51,207 INFO L101 nessWitnessExtractor]: Location invariant before [L721-L721] ((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y == 2)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-02-05 10:28:51,207 INFO L101 nessWitnessExtractor]: Location invariant before [L771-L771] (((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y == 2)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-02-05 10:28:51,208 INFO L101 nessWitnessExtractor]: Location invariant before [L728-L728] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,208 INFO L101 nessWitnessExtractor]: Location invariant before [L730-L730] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_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) || y == 2) [2024-02-05 10:28:51,249 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:28:51,383 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/safe033_tso.i[945,958] [2024-02-05 10:28:51,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:28:51,518 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-05 10:28:51,565 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/safe033_tso.i[945,958] Start Parsing Local Start Parsing Local [2024-02-05 10:28:51,567 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 Start Parsing Local Start Parsing Local [2024-02-05 10:28:51,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:28:51,709 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:28:51,709 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51 WrapperNode [2024-02-05 10:28:51,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:28:51,710 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:28:51,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:28:51,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:28:51,716 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 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,730 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 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,751 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-02-05 10:28:51,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:28:51,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:28:51,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:28:51,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:28:51,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,773 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,785 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-05 10:28:51,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,817 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:28:51,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:28:51,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:28:51,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:28:51,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (1/1) ... [2024-02-05 10:28:51,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:28:51,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:28:51,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-05 10:28:51,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-05 10:28:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:28:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:28:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:28:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:28:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:28:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:28:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:28:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-05 10:28:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-05 10:28:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-05 10:28:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-05 10:28:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:28:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:28:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:28:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:28:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:28:51,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:28:51,916 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:28:52,021 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:28:52,023 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:28:52,426 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:28:52,426 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:28:52,536 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:28:52,536 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-05 10:28:52,537 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:28:52 BoogieIcfgContainer [2024-02-05 10:28:52,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:28:52,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:28:52,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:28:52,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:28:52,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:28:50" (1/4) ... [2024-02-05 10:28:52,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361f9381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:28:52, skipping insertion in model container [2024-02-05 10:28:52,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:28:50" (2/4) ... [2024-02-05 10:28:52,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361f9381 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:28:52, skipping insertion in model container [2024-02-05 10:28:52,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:51" (3/4) ... [2024-02-05 10:28:52,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361f9381 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:28:52, skipping insertion in model container [2024-02-05 10:28:52,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:28:52" (4/4) ... [2024-02-05 10:28:52,546 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-02-05 10:28:52,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:28:52,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-02-05 10:28:52,561 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:28:52,626 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-05 10:28:52,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 77 transitions, 162 flow [2024-02-05 10:28:52,692 INFO L124 PetriNetUnfolderBase]: 1/75 cut-off events. [2024-02-05 10:28:52,692 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:28:52,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 279 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2024-02-05 10:28:52,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 77 transitions, 162 flow [2024-02-05 10:28:52,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 75 transitions, 156 flow [2024-02-05 10:28:52,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:28:52,715 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;@1c54c91a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:28:52,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-02-05 10:28:52,717 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:28:52,717 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:28:52,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:28:52,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:52,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:28:52,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:28:52,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash 10282, now seen corresponding path program 1 times [2024-02-05 10:28:52,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:52,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451916854] [2024-02-05 10:28:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:53,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451916854] [2024-02-05 10:28:53,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451916854] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:53,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:53,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:28:53,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925946155] [2024-02-05 10:28:53,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:53,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:28:53,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:28:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:28:53,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 77 [2024-02-05 10:28:53,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:53,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:53,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 77 [2024-02-05 10:28:53,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:53,713 INFO L124 PetriNetUnfolderBase]: 2237/4623 cut-off events. [2024-02-05 10:28:53,714 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-02-05 10:28:53,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8204 conditions, 4623 events. 2237/4623 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 38898 event pairs, 1699 based on Foata normal form. 99/2822 useless extension candidates. Maximal degree in co-relation 8192. Up to 3523 conditions per place. [2024-02-05 10:28:53,742 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 40 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-02-05 10:28:53,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 73 transitions, 241 flow [2024-02-05 10:28:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:28:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:28:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-02-05 10:28:53,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-02-05 10:28:53,754 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 156 flow. Second operand 3 states and 154 transitions. [2024-02-05 10:28:53,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 73 transitions, 241 flow [2024-02-05 10:28:53,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:53,763 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 155 flow [2024-02-05 10:28:53,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-02-05 10:28:53,768 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -8 predicate places. [2024-02-05 10:28:53,769 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 155 flow [2024-02-05 10:28:53,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:53,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:53,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:28:53,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:28:53,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:28:53,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:53,770 INFO L85 PathProgramCache]: Analyzing trace with hash 306723513, now seen corresponding path program 1 times [2024-02-05 10:28:53,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:53,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119253109] [2024-02-05 10:28:53,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:53,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:53,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:53,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119253109] [2024-02-05 10:28:53,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119253109] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:53,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:53,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:28:53,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230168351] [2024-02-05 10:28:53,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:53,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:28:53,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:53,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:28:53,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:28:53,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-02-05 10:28:53,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:53,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:53,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-02-05 10:28:53,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:54,506 INFO L124 PetriNetUnfolderBase]: 2406/4898 cut-off events. [2024-02-05 10:28:54,506 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-02-05 10:28:54,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9227 conditions, 4898 events. 2406/4898 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 40423 event pairs, 1963 based on Foata normal form. 544/3830 useless extension candidates. Maximal degree in co-relation 9214. Up to 3644 conditions per place. [2024-02-05 10:28:54,530 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 57 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-02-05 10:28:54,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 312 flow [2024-02-05 10:28:54,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:54,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-02-05 10:28:54,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422077922077922 [2024-02-05 10:28:54,536 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 155 flow. Second operand 4 states and 167 transitions. [2024-02-05 10:28:54,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 312 flow [2024-02-05 10:28:54,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:28:54,538 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 144 flow [2024-02-05 10:28:54,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2024-02-05 10:28:54,539 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -12 predicate places. [2024-02-05 10:28:54,539 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 144 flow [2024-02-05 10:28:54,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:54,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:54,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-05 10:28:54,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:28:54,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:28:54,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:54,542 INFO L85 PathProgramCache]: Analyzing trace with hash 918494681, now seen corresponding path program 1 times [2024-02-05 10:28:54,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:54,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946924381] [2024-02-05 10:28:54,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:54,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:54,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:54,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946924381] [2024-02-05 10:28:54,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946924381] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:54,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:54,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:28:54,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445201233] [2024-02-05 10:28:54,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:54,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:28:54,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:54,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:28:54,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:28:54,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-02-05 10:28:54,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 144 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) [2024-02-05 10:28:54,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:54,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-02-05 10:28:54,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:55,395 INFO L124 PetriNetUnfolderBase]: 3367/6482 cut-off events. [2024-02-05 10:28:55,396 INFO L125 PetriNetUnfolderBase]: For 641/647 co-relation queries the response was YES. [2024-02-05 10:28:55,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12536 conditions, 6482 events. 3367/6482 cut-off events. For 641/647 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 52700 event pairs, 2568 based on Foata normal form. 11/4564 useless extension candidates. Maximal degree in co-relation 12522. Up to 5268 conditions per place. [2024-02-05 10:28:55,433 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 51 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2024-02-05 10:28:55,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 74 transitions, 290 flow [2024-02-05 10:28:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-02-05 10:28:55,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-02-05 10:28:55,436 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 144 flow. Second operand 4 states and 137 transitions. [2024-02-05 10:28:55,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 74 transitions, 290 flow [2024-02-05 10:28:55,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:55,438 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 167 flow [2024-02-05 10:28:55,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-02-05 10:28:55,439 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2024-02-05 10:28:55,439 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 167 flow [2024-02-05 10:28:55,439 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) [2024-02-05 10:28:55,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:55,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:55,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:28:55,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:28:55,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1592372821, now seen corresponding path program 1 times [2024-02-05 10:28:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:55,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047315977] [2024-02-05 10:28:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:55,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047315977] [2024-02-05 10:28:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047315977] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:55,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:55,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:28:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046925044] [2024-02-05 10:28:55,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:28:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:28:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:28:55,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-02-05 10:28:55,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:55,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:55,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-02-05 10:28:55,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:56,094 INFO L124 PetriNetUnfolderBase]: 2504/4686 cut-off events. [2024-02-05 10:28:56,094 INFO L125 PetriNetUnfolderBase]: For 536/544 co-relation queries the response was YES. [2024-02-05 10:28:56,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9337 conditions, 4686 events. 2504/4686 cut-off events. For 536/544 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 36690 event pairs, 353 based on Foata normal form. 550/3932 useless extension candidates. Maximal degree in co-relation 9321. Up to 3759 conditions per place. [2024-02-05 10:28:56,115 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 67 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-02-05 10:28:56,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 369 flow [2024-02-05 10:28:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:56,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-02-05 10:28:56,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811688311688312 [2024-02-05 10:28:56,117 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 167 flow. Second operand 4 states and 179 transitions. [2024-02-05 10:28:56,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 369 flow [2024-02-05 10:28:56,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:56,121 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 153 flow [2024-02-05 10:28:56,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=153, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-02-05 10:28:56,122 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -13 predicate places. [2024-02-05 10:28:56,123 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 153 flow [2024-02-05 10:28:56,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:56,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:56,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:56,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:28:56,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:28:56,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:56,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2118916799, now seen corresponding path program 1 times [2024-02-05 10:28:56,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:56,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73134750] [2024-02-05 10:28:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:56,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:56,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:56,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73134750] [2024-02-05 10:28:56,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73134750] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:56,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:56,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:28:56,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536882030] [2024-02-05 10:28:56,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:56,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:28:56,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:56,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:28:56,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:28:56,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 77 [2024-02-05 10:28:56,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:56,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:56,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 77 [2024-02-05 10:28:56,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:56,849 INFO L124 PetriNetUnfolderBase]: 3456/6592 cut-off events. [2024-02-05 10:28:56,850 INFO L125 PetriNetUnfolderBase]: For 766/774 co-relation queries the response was YES. [2024-02-05 10:28:56,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13004 conditions, 6592 events. 3456/6592 cut-off events. For 766/774 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 52604 event pairs, 2831 based on Foata normal form. 11/4678 useless extension candidates. Maximal degree in co-relation 12989. Up to 5483 conditions per place. [2024-02-05 10:28:56,887 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 46 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2024-02-05 10:28:56,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 284 flow [2024-02-05 10:28:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-02-05 10:28:56,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-02-05 10:28:56,889 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 153 flow. Second operand 4 states and 140 transitions. [2024-02-05 10:28:56,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 284 flow [2024-02-05 10:28:56,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:56,891 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 180 flow [2024-02-05 10:28:56,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-02-05 10:28:56,891 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -10 predicate places. [2024-02-05 10:28:56,892 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 180 flow [2024-02-05 10:28:56,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:56,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:56,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:56,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:28:56,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:28:56,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:56,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2089861636, now seen corresponding path program 1 times [2024-02-05 10:28:56,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:56,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080617967] [2024-02-05 10:28:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:56,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:57,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:57,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080617967] [2024-02-05 10:28:57,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080617967] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:28:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831601214] [2024-02-05 10:28:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:57,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:28:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:28:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:28:57,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:28:57,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:57,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:57,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:28:57,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:57,558 INFO L124 PetriNetUnfolderBase]: 2923/5486 cut-off events. [2024-02-05 10:28:57,558 INFO L125 PetriNetUnfolderBase]: For 663/684 co-relation queries the response was YES. [2024-02-05 10:28:57,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10992 conditions, 5486 events. 2923/5486 cut-off events. For 663/684 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41819 event pairs, 1644 based on Foata normal form. 36/3892 useless extension candidates. Maximal degree in co-relation 10974. Up to 4476 conditions per place. [2024-02-05 10:28:57,647 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 61 selfloop transitions, 8 changer transitions 0/83 dead transitions. [2024-02-05 10:28:57,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 83 transitions, 375 flow [2024-02-05 10:28:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:28:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:28:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-02-05 10:28:57,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649350649350649 [2024-02-05 10:28:57,649 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 180 flow. Second operand 5 states and 179 transitions. [2024-02-05 10:28:57,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 83 transitions, 375 flow [2024-02-05 10:28:57,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:28:57,651 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 217 flow [2024-02-05 10:28:57,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-02-05 10:28:57,652 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2024-02-05 10:28:57,652 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 217 flow [2024-02-05 10:28:57,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:57,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:57,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:57,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:28:57,653 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:28:57,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:57,653 INFO L85 PathProgramCache]: Analyzing trace with hash -464617439, now seen corresponding path program 1 times [2024-02-05 10:28:57,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:57,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836247756] [2024-02-05 10:28:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:57,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:57,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836247756] [2024-02-05 10:28:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836247756] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:57,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:57,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:28:57,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658856545] [2024-02-05 10:28:57,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:57,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:28:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:28:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:28:57,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:28:57,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:57,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:57,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:28:57,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:58,167 INFO L124 PetriNetUnfolderBase]: 1914/3808 cut-off events. [2024-02-05 10:28:58,167 INFO L125 PetriNetUnfolderBase]: For 1085/1087 co-relation queries the response was YES. [2024-02-05 10:28:58,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8121 conditions, 3808 events. 1914/3808 cut-off events. For 1085/1087 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 29317 event pairs, 1504 based on Foata normal form. 14/2853 useless extension candidates. Maximal degree in co-relation 8101. Up to 3055 conditions per place. [2024-02-05 10:28:58,187 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 44 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-02-05 10:28:58,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 345 flow [2024-02-05 10:28:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2024-02-05 10:28:58,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5876623376623377 [2024-02-05 10:28:58,189 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 217 flow. Second operand 4 states and 181 transitions. [2024-02-05 10:28:58,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 345 flow [2024-02-05 10:28:58,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 331 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:58,192 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 235 flow [2024-02-05 10:28:58,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-02-05 10:28:58,192 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2024-02-05 10:28:58,192 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 235 flow [2024-02-05 10:28:58,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:58,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:58,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:58,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-05 10:28:58,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:28:58,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:58,194 INFO L85 PathProgramCache]: Analyzing trace with hash -464531804, now seen corresponding path program 1 times [2024-02-05 10:28:58,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:58,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623549958] [2024-02-05 10:28:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:58,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:58,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:58,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623549958] [2024-02-05 10:28:58,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623549958] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:58,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:58,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:28:58,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812182660] [2024-02-05 10:28:58,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:58,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:28:58,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:28:58,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:28:58,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:28:58,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:58,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:58,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:28:58,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:59,004 INFO L124 PetriNetUnfolderBase]: 2724/5283 cut-off events. [2024-02-05 10:28:59,004 INFO L125 PetriNetUnfolderBase]: For 2457/2465 co-relation queries the response was YES. [2024-02-05 10:28:59,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11825 conditions, 5283 events. 2724/5283 cut-off events. For 2457/2465 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 40391 event pairs, 2138 based on Foata normal form. 17/4252 useless extension candidates. Maximal degree in co-relation 11804. Up to 4325 conditions per place. [2024-02-05 10:28:59,035 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 52 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2024-02-05 10:28:59,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 382 flow [2024-02-05 10:28:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:28:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:28:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-02-05 10:28:59,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44935064935064933 [2024-02-05 10:28:59,037 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 235 flow. Second operand 5 states and 173 transitions. [2024-02-05 10:28:59,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 382 flow [2024-02-05 10:28:59,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 370 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:59,040 INFO L231 Difference]: Finished difference. Result has 79 places, 64 transitions, 245 flow [2024-02-05 10:28:59,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=79, PETRI_TRANSITIONS=64} [2024-02-05 10:28:59,041 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -2 predicate places. [2024-02-05 10:28:59,041 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 64 transitions, 245 flow [2024-02-05 10:28:59,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:59,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:59,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:59,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-05 10:28:59,042 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:28:59,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:59,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1542333292, now seen corresponding path program 1 times [2024-02-05 10:28:59,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:59,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634304711] [2024-02-05 10:28:59,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:59,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:59,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:59,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634304711] [2024-02-05 10:28:59,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634304711] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:59,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:59,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:28:59,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916970067] [2024-02-05 10:28:59,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:59,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:28:59,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:59,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:28:59,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:28:59,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:28:59,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 64 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:59,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:59,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:28:59,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:59,758 INFO L124 PetriNetUnfolderBase]: 2744/5311 cut-off events. [2024-02-05 10:28:59,758 INFO L125 PetriNetUnfolderBase]: For 2589/2597 co-relation queries the response was YES. [2024-02-05 10:28:59,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12029 conditions, 5311 events. 2744/5311 cut-off events. For 2589/2597 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 40427 event pairs, 1831 based on Foata normal form. 20/4287 useless extension candidates. Maximal degree in co-relation 12007. Up to 4244 conditions per place. [2024-02-05 10:28:59,795 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 61 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-02-05 10:28:59,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 445 flow [2024-02-05 10:28:59,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:28:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:28:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-02-05 10:28:59,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753246753246753 [2024-02-05 10:28:59,809 INFO L175 Difference]: Start difference. First operand has 79 places, 64 transitions, 245 flow. Second operand 5 states and 183 transitions. [2024-02-05 10:28:59,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 445 flow [2024-02-05 10:28:59,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 429 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:59,812 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 273 flow [2024-02-05 10:28:59,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-02-05 10:28:59,813 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 0 predicate places. [2024-02-05 10:28:59,813 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 273 flow [2024-02-05 10:28:59,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:59,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:59,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:59,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-05 10:28:59,814 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:28:59,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:59,814 INFO L85 PathProgramCache]: Analyzing trace with hash -270297358, now seen corresponding path program 1 times [2024-02-05 10:28:59,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:59,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146593708] [2024-02-05 10:28:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:59,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:00,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:00,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146593708] [2024-02-05 10:29:00,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146593708] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:00,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:00,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:29:00,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423944929] [2024-02-05 10:29:00,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:00,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:29:00,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:29:00,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:29:00,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:00,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:00,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:00,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:00,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:00,476 INFO L124 PetriNetUnfolderBase]: 2835/5440 cut-off events. [2024-02-05 10:29:00,477 INFO L125 PetriNetUnfolderBase]: For 2784/2841 co-relation queries the response was YES. [2024-02-05 10:29:00,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12426 conditions, 5440 events. 2835/5440 cut-off events. For 2784/2841 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 42225 event pairs, 2208 based on Foata normal form. 43/4319 useless extension candidates. Maximal degree in co-relation 12402. Up to 4466 conditions per place. [2024-02-05 10:29:00,504 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 57 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-02-05 10:29:00,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 459 flow [2024-02-05 10:29:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-02-05 10:29:00,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43376623376623374 [2024-02-05 10:29:00,506 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 273 flow. Second operand 5 states and 167 transitions. [2024-02-05 10:29:00,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 459 flow [2024-02-05 10:29:00,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 439 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:00,509 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 305 flow [2024-02-05 10:29:00,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-02-05 10:29:00,510 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2024-02-05 10:29:00,510 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 305 flow [2024-02-05 10:29:00,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:00,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:00,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:00,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-05 10:29:00,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:00,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:00,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1397087712, now seen corresponding path program 2 times [2024-02-05 10:29:00,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:00,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574759459] [2024-02-05 10:29:00,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:00,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:00,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:00,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574759459] [2024-02-05 10:29:00,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574759459] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:00,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:00,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:29:00,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190547076] [2024-02-05 10:29:00,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:00,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:29:00,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:00,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:29:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:29:00,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:00,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:00,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:00,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:00,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:01,194 INFO L124 PetriNetUnfolderBase]: 2733/5263 cut-off events. [2024-02-05 10:29:01,195 INFO L125 PetriNetUnfolderBase]: For 2972/2983 co-relation queries the response was YES. [2024-02-05 10:29:01,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12182 conditions, 5263 events. 2733/5263 cut-off events. For 2972/2983 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 40132 event pairs, 1853 based on Foata normal form. 20/4235 useless extension candidates. Maximal degree in co-relation 12156. Up to 4250 conditions per place. [2024-02-05 10:29:01,218 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 63 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2024-02-05 10:29:01,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 497 flow [2024-02-05 10:29:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-02-05 10:29:01,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-02-05 10:29:01,220 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 305 flow. Second operand 5 states and 182 transitions. [2024-02-05 10:29:01,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 497 flow [2024-02-05 10:29:01,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 487 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-05 10:29:01,223 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 327 flow [2024-02-05 10:29:01,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-02-05 10:29:01,224 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 7 predicate places. [2024-02-05 10:29:01,224 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 327 flow [2024-02-05 10:29:01,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:01,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:01,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:01,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-05 10:29:01,225 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:01,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:01,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1515616402, now seen corresponding path program 2 times [2024-02-05 10:29:01,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:01,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765943758] [2024-02-05 10:29:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:01,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:01,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:01,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765943758] [2024-02-05 10:29:01,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765943758] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:01,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:01,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:29:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151049628] [2024-02-05 10:29:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:01,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:29:01,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:01,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:29:01,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:29:01,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:01,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:01,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:01,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:01,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:01,829 INFO L124 PetriNetUnfolderBase]: 2790/5356 cut-off events. [2024-02-05 10:29:01,829 INFO L125 PetriNetUnfolderBase]: For 2975/3002 co-relation queries the response was YES. [2024-02-05 10:29:01,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12351 conditions, 5356 events. 2790/5356 cut-off events. For 2975/3002 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41640 event pairs, 2184 based on Foata normal form. 22/4220 useless extension candidates. Maximal degree in co-relation 12323. Up to 4399 conditions per place. [2024-02-05 10:29:01,858 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 56 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-02-05 10:29:01,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 485 flow [2024-02-05 10:29:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-02-05 10:29:01,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-05 10:29:01,859 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 327 flow. Second operand 5 states and 165 transitions. [2024-02-05 10:29:01,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 485 flow [2024-02-05 10:29:01,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 82 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:29:01,863 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 339 flow [2024-02-05 10:29:01,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2024-02-05 10:29:01,864 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2024-02-05 10:29:01,864 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 339 flow [2024-02-05 10:29:01,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:01,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:01,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:01,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-05 10:29:01,865 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:01,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:01,865 INFO L85 PathProgramCache]: Analyzing trace with hash 179293086, now seen corresponding path program 1 times [2024-02-05 10:29:01,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:01,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402155971] [2024-02-05 10:29:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:01,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:01,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:01,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402155971] [2024-02-05 10:29:01,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402155971] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:01,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:01,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:29:01,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21607715] [2024-02-05 10:29:01,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:01,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:29:01,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:01,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:29:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:29:01,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:01,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:01,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:01,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:01,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:02,371 INFO L124 PetriNetUnfolderBase]: 1518/3184 cut-off events. [2024-02-05 10:29:02,372 INFO L125 PetriNetUnfolderBase]: For 2346/2354 co-relation queries the response was YES. [2024-02-05 10:29:02,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7295 conditions, 3184 events. 1518/3184 cut-off events. For 2346/2354 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 23903 event pairs, 906 based on Foata normal form. 88/2611 useless extension candidates. Maximal degree in co-relation 7265. Up to 2007 conditions per place. [2024-02-05 10:29:02,384 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 67 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2024-02-05 10:29:02,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 105 transitions, 607 flow [2024-02-05 10:29:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-02-05 10:29:02,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6155844155844156 [2024-02-05 10:29:02,389 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 339 flow. Second operand 5 states and 237 transitions. [2024-02-05 10:29:02,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 105 transitions, 607 flow [2024-02-05 10:29:02,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 105 transitions, 575 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:02,404 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 411 flow [2024-02-05 10:29:02,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-02-05 10:29:02,405 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2024-02-05 10:29:02,405 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 411 flow [2024-02-05 10:29:02,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:02,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:02,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:02,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-05 10:29:02,406 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:02,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash 261549031, now seen corresponding path program 1 times [2024-02-05 10:29:02,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:02,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581059162] [2024-02-05 10:29:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:02,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:02,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:02,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581059162] [2024-02-05 10:29:02,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581059162] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:02,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:02,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161752653] [2024-02-05 10:29:02,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:02,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:02,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:02,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:02,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:02,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 411 flow. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:02,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:02,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:02,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:03,026 INFO L124 PetriNetUnfolderBase]: 2051/4161 cut-off events. [2024-02-05 10:29:03,026 INFO L125 PetriNetUnfolderBase]: For 3990/4001 co-relation queries the response was YES. [2024-02-05 10:29:03,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10297 conditions, 4161 events. 2051/4161 cut-off events. For 3990/4001 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 30717 event pairs, 791 based on Foata normal form. 33/3556 useless extension candidates. Maximal degree in co-relation 10265. Up to 2672 conditions per place. [2024-02-05 10:29:03,046 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 80 selfloop transitions, 18 changer transitions 0/114 dead transitions. [2024-02-05 10:29:03,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 114 transitions, 708 flow [2024-02-05 10:29:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-02-05 10:29:03,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-02-05 10:29:03,048 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 411 flow. Second operand 6 states and 224 transitions. [2024-02-05 10:29:03,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 114 transitions, 708 flow [2024-02-05 10:29:03,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 114 transitions, 704 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-05 10:29:03,053 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 472 flow [2024-02-05 10:29:03,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-02-05 10:29:03,054 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 19 predicate places. [2024-02-05 10:29:03,054 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 472 flow [2024-02-05 10:29:03,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:03,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:03,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:03,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-05 10:29:03,055 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:03,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:03,055 INFO L85 PathProgramCache]: Analyzing trace with hash 562636642, now seen corresponding path program 1 times [2024-02-05 10:29:03,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:03,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715380482] [2024-02-05 10:29:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:03,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:03,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:03,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715380482] [2024-02-05 10:29:03,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715380482] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:03,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:03,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:29:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592536885] [2024-02-05 10:29:03,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:03,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:29:03,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:03,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:29:03,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:29:03,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:03,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 472 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:03,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:03,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:03,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:03,546 INFO L124 PetriNetUnfolderBase]: 1491/3168 cut-off events. [2024-02-05 10:29:03,547 INFO L125 PetriNetUnfolderBase]: For 4119/4132 co-relation queries the response was YES. [2024-02-05 10:29:03,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8263 conditions, 3168 events. 1491/3168 cut-off events. For 4119/4132 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 23717 event pairs, 725 based on Foata normal form. 17/2732 useless extension candidates. Maximal degree in co-relation 8227. Up to 2015 conditions per place. [2024-02-05 10:29:03,563 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 71 selfloop transitions, 17 changer transitions 0/112 dead transitions. [2024-02-05 10:29:03,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 112 transitions, 758 flow [2024-02-05 10:29:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:03,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-02-05 10:29:03,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6207792207792208 [2024-02-05 10:29:03,564 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 472 flow. Second operand 5 states and 239 transitions. [2024-02-05 10:29:03,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 112 transitions, 758 flow [2024-02-05 10:29:03,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 112 transitions, 722 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:03,569 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 494 flow [2024-02-05 10:29:03,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=96, 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=494, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-02-05 10:29:03,569 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 20 predicate places. [2024-02-05 10:29:03,570 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 494 flow [2024-02-05 10:29:03,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:03,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:03,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:03,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-05 10:29:03,570 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:03,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:03,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1398289402, now seen corresponding path program 2 times [2024-02-05 10:29:03,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:03,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138556608] [2024-02-05 10:29:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:03,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:03,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:03,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138556608] [2024-02-05 10:29:03,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138556608] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:03,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:03,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:29:03,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486521785] [2024-02-05 10:29:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:03,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:29:03,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:03,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:29:03,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:29:03,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:03,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:03,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:03,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:03,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:04,114 INFO L124 PetriNetUnfolderBase]: 1437/3073 cut-off events. [2024-02-05 10:29:04,114 INFO L125 PetriNetUnfolderBase]: For 4356/4373 co-relation queries the response was YES. [2024-02-05 10:29:04,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7976 conditions, 3073 events. 1437/3073 cut-off events. For 4356/4373 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 23033 event pairs, 687 based on Foata normal form. 35/2659 useless extension candidates. Maximal degree in co-relation 7939. Up to 1999 conditions per place. [2024-02-05 10:29:04,133 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 67 selfloop transitions, 16 changer transitions 0/107 dead transitions. [2024-02-05 10:29:04,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 728 flow [2024-02-05 10:29:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-02-05 10:29:04,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6051948051948052 [2024-02-05 10:29:04,134 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 494 flow. Second operand 5 states and 233 transitions. [2024-02-05 10:29:04,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 107 transitions, 728 flow [2024-02-05 10:29:04,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 107 transitions, 706 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-05 10:29:04,140 INFO L231 Difference]: Finished difference. Result has 104 places, 85 transitions, 512 flow [2024-02-05 10:29:04,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=104, PETRI_TRANSITIONS=85} [2024-02-05 10:29:04,140 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 23 predicate places. [2024-02-05 10:29:04,141 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 85 transitions, 512 flow [2024-02-05 10:29:04,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:04,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:04,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:04,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-05 10:29:04,141 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:04,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:04,142 INFO L85 PathProgramCache]: Analyzing trace with hash -545728103, now seen corresponding path program 1 times [2024-02-05 10:29:04,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:04,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377283642] [2024-02-05 10:29:04,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:04,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:04,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377283642] [2024-02-05 10:29:04,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377283642] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:04,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:04,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:04,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971668282] [2024-02-05 10:29:04,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:04,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:04,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:04,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:04,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:04,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 85 transitions, 512 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:04,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:04,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:04,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:04,899 INFO L124 PetriNetUnfolderBase]: 2029/3970 cut-off events. [2024-02-05 10:29:04,899 INFO L125 PetriNetUnfolderBase]: For 5917/5959 co-relation queries the response was YES. [2024-02-05 10:29:04,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10627 conditions, 3970 events. 2029/3970 cut-off events. For 5917/5959 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 28543 event pairs, 924 based on Foata normal form. 31/3489 useless extension candidates. Maximal degree in co-relation 10589. Up to 2735 conditions per place. [2024-02-05 10:29:04,922 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 86 selfloop transitions, 21 changer transitions 0/123 dead transitions. [2024-02-05 10:29:04,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 123 transitions, 839 flow [2024-02-05 10:29:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-02-05 10:29:04,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-02-05 10:29:04,924 INFO L175 Difference]: Start difference. First operand has 104 places, 85 transitions, 512 flow. Second operand 6 states and 220 transitions. [2024-02-05 10:29:04,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 123 transitions, 839 flow [2024-02-05 10:29:04,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 123 transitions, 798 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:04,933 INFO L231 Difference]: Finished difference. Result has 107 places, 87 transitions, 540 flow [2024-02-05 10:29:04,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2024-02-05 10:29:04,933 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 26 predicate places. [2024-02-05 10:29:04,933 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 540 flow [2024-02-05 10:29:04,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:04,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:04,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:04,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-05 10:29:04,934 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:04,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:04,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1262613507, now seen corresponding path program 1 times [2024-02-05 10:29:04,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:04,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336100898] [2024-02-05 10:29:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:05,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:05,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336100898] [2024-02-05 10:29:05,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336100898] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:05,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:05,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:05,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539142464] [2024-02-05 10:29:05,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:05,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:05,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:05,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:05,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 540 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:05,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:05,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:05,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:05,562 INFO L124 PetriNetUnfolderBase]: 2126/4154 cut-off events. [2024-02-05 10:29:05,562 INFO L125 PetriNetUnfolderBase]: For 6131/6142 co-relation queries the response was YES. [2024-02-05 10:29:05,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11301 conditions, 4154 events. 2126/4154 cut-off events. For 6131/6142 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 30089 event pairs, 984 based on Foata normal form. 14/3638 useless extension candidates. Maximal degree in co-relation 11261. Up to 2690 conditions per place. [2024-02-05 10:29:05,585 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 89 selfloop transitions, 27 changer transitions 0/133 dead transitions. [2024-02-05 10:29:05,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 133 transitions, 941 flow [2024-02-05 10:29:05,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-02-05 10:29:05,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-02-05 10:29:05,589 INFO L175 Difference]: Start difference. First operand has 107 places, 87 transitions, 540 flow. Second operand 6 states and 238 transitions. [2024-02-05 10:29:05,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 133 transitions, 941 flow [2024-02-05 10:29:05,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 133 transitions, 907 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:05,597 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 635 flow [2024-02-05 10:29:05,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=635, PETRI_PLACES=111, PETRI_TRANSITIONS=95} [2024-02-05 10:29:05,598 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 30 predicate places. [2024-02-05 10:29:05,598 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 635 flow [2024-02-05 10:29:05,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:05,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:05,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:05,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-05 10:29:05,599 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:05,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:05,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2057710379, now seen corresponding path program 2 times [2024-02-05 10:29:05,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:05,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691827626] [2024-02-05 10:29:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:05,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:05,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:05,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691827626] [2024-02-05 10:29:05,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691827626] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:05,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:05,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633024990] [2024-02-05 10:29:05,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:05,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:05,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:05,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:05,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:05,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 95 transitions, 635 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:05,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:05,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:05,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:06,465 INFO L124 PetriNetUnfolderBase]: 3300/6093 cut-off events. [2024-02-05 10:29:06,466 INFO L125 PetriNetUnfolderBase]: For 10820/10999 co-relation queries the response was YES. [2024-02-05 10:29:06,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17652 conditions, 6093 events. 3300/6093 cut-off events. For 10820/10999 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 43048 event pairs, 1333 based on Foata normal form. 127/5525 useless extension candidates. Maximal degree in co-relation 17609. Up to 3875 conditions per place. [2024-02-05 10:29:06,498 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 96 selfloop transitions, 28 changer transitions 0/143 dead transitions. [2024-02-05 10:29:06,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 143 transitions, 1115 flow [2024-02-05 10:29:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-02-05 10:29:06,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48268398268398266 [2024-02-05 10:29:06,501 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 635 flow. Second operand 6 states and 223 transitions. [2024-02-05 10:29:06,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 143 transitions, 1115 flow [2024-02-05 10:29:06,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 143 transitions, 1053 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:06,516 INFO L231 Difference]: Finished difference. Result has 114 places, 104 transitions, 751 flow [2024-02-05 10:29:06,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=751, PETRI_PLACES=114, PETRI_TRANSITIONS=104} [2024-02-05 10:29:06,517 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 33 predicate places. [2024-02-05 10:29:06,517 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 104 transitions, 751 flow [2024-02-05 10:29:06,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:06,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:06,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:06,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-05 10:29:06,517 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:06,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:06,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1724261767, now seen corresponding path program 2 times [2024-02-05 10:29:06,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:06,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846865684] [2024-02-05 10:29:06,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:06,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:06,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:06,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846865684] [2024-02-05 10:29:06,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846865684] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:06,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:06,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:06,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17410757] [2024-02-05 10:29:06,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:06,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:06,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:06,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:06,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 104 transitions, 751 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:06,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:06,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:06,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:07,182 INFO L124 PetriNetUnfolderBase]: 2226/4342 cut-off events. [2024-02-05 10:29:07,182 INFO L125 PetriNetUnfolderBase]: For 8014/8031 co-relation queries the response was YES. [2024-02-05 10:29:07,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12956 conditions, 4342 events. 2226/4342 cut-off events. For 8014/8031 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 31437 event pairs, 984 based on Foata normal form. 116/3926 useless extension candidates. Maximal degree in co-relation 12911. Up to 2744 conditions per place. [2024-02-05 10:29:07,207 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 81 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-02-05 10:29:07,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 130 transitions, 1074 flow [2024-02-05 10:29:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-02-05 10:29:07,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-02-05 10:29:07,209 INFO L175 Difference]: Start difference. First operand has 114 places, 104 transitions, 751 flow. Second operand 6 states and 222 transitions. [2024-02-05 10:29:07,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 130 transitions, 1074 flow [2024-02-05 10:29:07,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 130 transitions, 1051 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:29:07,221 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 814 flow [2024-02-05 10:29:07,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=814, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-02-05 10:29:07,222 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 37 predicate places. [2024-02-05 10:29:07,222 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 814 flow [2024-02-05 10:29:07,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:07,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:07,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:07,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-05 10:29:07,223 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:07,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:07,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2057682577, now seen corresponding path program 1 times [2024-02-05 10:29:07,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:07,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700061299] [2024-02-05 10:29:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:07,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:07,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700061299] [2024-02-05 10:29:07,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700061299] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:07,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:07,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:07,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414835305] [2024-02-05 10:29:07,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:07,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:07,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:07,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:07,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:07,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:07,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 814 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) [2024-02-05 10:29:07,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:07,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:07,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:07,992 INFO L124 PetriNetUnfolderBase]: 2970/5549 cut-off events. [2024-02-05 10:29:07,992 INFO L125 PetriNetUnfolderBase]: For 13535/13704 co-relation queries the response was YES. [2024-02-05 10:29:08,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17064 conditions, 5549 events. 2970/5549 cut-off events. For 13535/13704 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 39061 event pairs, 1237 based on Foata normal form. 67/4940 useless extension candidates. Maximal degree in co-relation 17018. Up to 3830 conditions per place. [2024-02-05 10:29:08,018 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 86 selfloop transitions, 29 changer transitions 0/134 dead transitions. [2024-02-05 10:29:08,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 134 transitions, 1138 flow [2024-02-05 10:29:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-02-05 10:29:08,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653679653679654 [2024-02-05 10:29:08,020 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 814 flow. Second operand 6 states and 215 transitions. [2024-02-05 10:29:08,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 134 transitions, 1138 flow [2024-02-05 10:29:08,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 134 transitions, 1074 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:08,035 INFO L231 Difference]: Finished difference. Result has 119 places, 104 transitions, 821 flow [2024-02-05 10:29:08,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=821, PETRI_PLACES=119, PETRI_TRANSITIONS=104} [2024-02-05 10:29:08,036 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 38 predicate places. [2024-02-05 10:29:08,036 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 104 transitions, 821 flow [2024-02-05 10:29:08,036 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) [2024-02-05 10:29:08,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:08,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:08,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-05 10:29:08,036 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:08,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1750153065, now seen corresponding path program 3 times [2024-02-05 10:29:08,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:08,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240121277] [2024-02-05 10:29:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:08,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:08,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240121277] [2024-02-05 10:29:08,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240121277] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:08,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:08,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:08,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189152053] [2024-02-05 10:29:08,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:08,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:08,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:08,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:08,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:08,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 104 transitions, 821 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:08,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:08,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:08,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:08,779 INFO L124 PetriNetUnfolderBase]: 2973/5536 cut-off events. [2024-02-05 10:29:08,779 INFO L125 PetriNetUnfolderBase]: For 14161/14325 co-relation queries the response was YES. [2024-02-05 10:29:08,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17097 conditions, 5536 events. 2973/5536 cut-off events. For 14161/14325 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 38823 event pairs, 1220 based on Foata normal form. 83/4943 useless extension candidates. Maximal degree in co-relation 17050. Up to 3851 conditions per place. [2024-02-05 10:29:08,812 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 81 selfloop transitions, 38 changer transitions 0/138 dead transitions. [2024-02-05 10:29:08,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 138 transitions, 1203 flow [2024-02-05 10:29:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-02-05 10:29:08,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653679653679654 [2024-02-05 10:29:08,814 INFO L175 Difference]: Start difference. First operand has 119 places, 104 transitions, 821 flow. Second operand 6 states and 215 transitions. [2024-02-05 10:29:08,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 138 transitions, 1203 flow [2024-02-05 10:29:08,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 1134 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:08,832 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 912 flow [2024-02-05 10:29:08,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=912, PETRI_PLACES=121, PETRI_TRANSITIONS=110} [2024-02-05 10:29:08,833 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 40 predicate places. [2024-02-05 10:29:08,833 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 912 flow [2024-02-05 10:29:08,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:08,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:08,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:08,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-05 10:29:08,834 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:08,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1750180867, now seen corresponding path program 2 times [2024-02-05 10:29:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:08,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235675997] [2024-02-05 10:29:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:08,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:08,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:08,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235675997] [2024-02-05 10:29:08,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235675997] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:08,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:08,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:08,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297001490] [2024-02-05 10:29:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:08,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:08,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:09,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:09,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 110 transitions, 912 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) [2024-02-05 10:29:09,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:09,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:09,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:09,632 INFO L124 PetriNetUnfolderBase]: 2999/5604 cut-off events. [2024-02-05 10:29:09,632 INFO L125 PetriNetUnfolderBase]: For 15112/15290 co-relation queries the response was YES. [2024-02-05 10:29:09,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17952 conditions, 5604 events. 2999/5604 cut-off events. For 15112/15290 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 39405 event pairs, 1205 based on Foata normal form. 80/5011 useless extension candidates. Maximal degree in co-relation 17903. Up to 3863 conditions per place. [2024-02-05 10:29:09,673 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 79 selfloop transitions, 42 changer transitions 0/140 dead transitions. [2024-02-05 10:29:09,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 140 transitions, 1304 flow [2024-02-05 10:29:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-02-05 10:29:09,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-02-05 10:29:09,677 INFO L175 Difference]: Start difference. First operand has 121 places, 110 transitions, 912 flow. Second operand 6 states and 214 transitions. [2024-02-05 10:29:09,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 140 transitions, 1304 flow [2024-02-05 10:29:09,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 140 transitions, 1251 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:09,701 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 1054 flow [2024-02-05 10:29:09,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1054, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2024-02-05 10:29:09,702 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 44 predicate places. [2024-02-05 10:29:09,702 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 1054 flow [2024-02-05 10:29:09,702 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) [2024-02-05 10:29:09,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:09,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:09,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-05 10:29:09,703 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:09,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1751106217, now seen corresponding path program 3 times [2024-02-05 10:29:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:09,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537932689] [2024-02-05 10:29:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:09,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:09,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:09,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537932689] [2024-02-05 10:29:09,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537932689] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:09,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:09,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:09,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486202393] [2024-02-05 10:29:09,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:09,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:09,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:09,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:09,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:09,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:09,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 1054 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) [2024-02-05 10:29:09,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:09,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:09,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:10,641 INFO L124 PetriNetUnfolderBase]: 3061/5696 cut-off events. [2024-02-05 10:29:10,642 INFO L125 PetriNetUnfolderBase]: For 17106/17293 co-relation queries the response was YES. [2024-02-05 10:29:10,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18808 conditions, 5696 events. 3061/5696 cut-off events. For 17106/17293 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 40017 event pairs, 1205 based on Foata normal form. 62/5082 useless extension candidates. Maximal degree in co-relation 18757. Up to 3902 conditions per place. [2024-02-05 10:29:10,689 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 79 selfloop transitions, 51 changer transitions 0/149 dead transitions. [2024-02-05 10:29:10,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 149 transitions, 1477 flow [2024-02-05 10:29:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:10,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-02-05 10:29:10,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45670995670995673 [2024-02-05 10:29:10,698 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 1054 flow. Second operand 6 states and 211 transitions. [2024-02-05 10:29:10,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 149 transitions, 1477 flow [2024-02-05 10:29:10,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 149 transitions, 1423 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:10,744 INFO L231 Difference]: Finished difference. Result has 129 places, 125 transitions, 1244 flow [2024-02-05 10:29:10,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1244, PETRI_PLACES=129, PETRI_TRANSITIONS=125} [2024-02-05 10:29:10,745 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 48 predicate places. [2024-02-05 10:29:10,745 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 125 transitions, 1244 flow [2024-02-05 10:29:10,745 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) [2024-02-05 10:29:10,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:10,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:10,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-05 10:29:10,746 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:10,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash -726710362, now seen corresponding path program 1 times [2024-02-05 10:29:10,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:10,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619425172] [2024-02-05 10:29:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:10,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:10,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:10,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619425172] [2024-02-05 10:29:10,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619425172] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:10,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:10,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:10,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583176665] [2024-02-05 10:29:10,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:10,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:10,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:10,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:10,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:10,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 125 transitions, 1244 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:10,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:10,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:10,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:11,506 INFO L124 PetriNetUnfolderBase]: 1935/3830 cut-off events. [2024-02-05 10:29:11,506 INFO L125 PetriNetUnfolderBase]: For 16956/17149 co-relation queries the response was YES. [2024-02-05 10:29:11,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14204 conditions, 3830 events. 1935/3830 cut-off events. For 16956/17149 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 25944 event pairs, 626 based on Foata normal form. 176/3619 useless extension candidates. Maximal degree in co-relation 14151. Up to 1533 conditions per place. [2024-02-05 10:29:11,534 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 104 selfloop transitions, 43 changer transitions 0/170 dead transitions. [2024-02-05 10:29:11,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 170 transitions, 1717 flow [2024-02-05 10:29:11,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-02-05 10:29:11,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49536178107606677 [2024-02-05 10:29:11,536 INFO L175 Difference]: Start difference. First operand has 129 places, 125 transitions, 1244 flow. Second operand 7 states and 267 transitions. [2024-02-05 10:29:11,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 170 transitions, 1717 flow [2024-02-05 10:29:11,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 170 transitions, 1594 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:11,565 INFO L231 Difference]: Finished difference. Result has 131 places, 130 transitions, 1280 flow [2024-02-05 10:29:11,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1280, PETRI_PLACES=131, PETRI_TRANSITIONS=130} [2024-02-05 10:29:11,565 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 50 predicate places. [2024-02-05 10:29:11,565 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 130 transitions, 1280 flow [2024-02-05 10:29:11,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:11,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:11,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:11,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-05 10:29:11,566 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:11,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1597610877, now seen corresponding path program 1 times [2024-02-05 10:29:11,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:11,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537992430] [2024-02-05 10:29:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537992430] [2024-02-05 10:29:11,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537992430] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:11,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:11,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:11,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742109336] [2024-02-05 10:29:11,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:11,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:11,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:11,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:11,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:11,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 130 transitions, 1280 flow. Second operand has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:11,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:11,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:11,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:12,234 INFO L124 PetriNetUnfolderBase]: 1561/3216 cut-off events. [2024-02-05 10:29:12,234 INFO L125 PetriNetUnfolderBase]: For 17506/17673 co-relation queries the response was YES. [2024-02-05 10:29:12,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12603 conditions, 3216 events. 1561/3216 cut-off events. For 17506/17673 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 22430 event pairs, 409 based on Foata normal form. 62/3030 useless extension candidates. Maximal degree in co-relation 12549. Up to 1559 conditions per place. [2024-02-05 10:29:12,253 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 120 selfloop transitions, 63 changer transitions 0/217 dead transitions. [2024-02-05 10:29:12,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 217 transitions, 2612 flow [2024-02-05 10:29:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 315 transitions. [2024-02-05 10:29:12,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5844155844155844 [2024-02-05 10:29:12,255 INFO L175 Difference]: Start difference. First operand has 131 places, 130 transitions, 1280 flow. Second operand 7 states and 315 transitions. [2024-02-05 10:29:12,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 217 transitions, 2612 flow [2024-02-05 10:29:12,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 217 transitions, 2552 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:12,284 INFO L231 Difference]: Finished difference. Result has 138 places, 176 transitions, 2124 flow [2024-02-05 10:29:12,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2124, PETRI_PLACES=138, PETRI_TRANSITIONS=176} [2024-02-05 10:29:12,285 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 57 predicate places. [2024-02-05 10:29:12,285 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 176 transitions, 2124 flow [2024-02-05 10:29:12,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:12,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:12,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:12,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-05 10:29:12,286 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:12,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1065048879, now seen corresponding path program 1 times [2024-02-05 10:29:12,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:12,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816447632] [2024-02-05 10:29:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:12,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:12,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:12,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816447632] [2024-02-05 10:29:12,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816447632] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:12,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:12,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:12,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310039837] [2024-02-05 10:29:12,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:12,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:12,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:12,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:12,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:12,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 176 transitions, 2124 flow. Second operand has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:12,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:12,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:12,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:12,884 INFO L124 PetriNetUnfolderBase]: 1566/3249 cut-off events. [2024-02-05 10:29:12,884 INFO L125 PetriNetUnfolderBase]: For 20842/21019 co-relation queries the response was YES. [2024-02-05 10:29:12,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13528 conditions, 3249 events. 1566/3249 cut-off events. For 20842/21019 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 22634 event pairs, 505 based on Foata normal form. 67/3017 useless extension candidates. Maximal degree in co-relation 13469. Up to 1548 conditions per place. [2024-02-05 10:29:12,909 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 117 selfloop transitions, 59 changer transitions 0/210 dead transitions. [2024-02-05 10:29:12,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 210 transitions, 2641 flow [2024-02-05 10:29:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:12,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:12,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2024-02-05 10:29:12,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6311688311688312 [2024-02-05 10:29:12,910 INFO L175 Difference]: Start difference. First operand has 138 places, 176 transitions, 2124 flow. Second operand 5 states and 243 transitions. [2024-02-05 10:29:12,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 210 transitions, 2641 flow [2024-02-05 10:29:12,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 210 transitions, 2633 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-02-05 10:29:12,946 INFO L231 Difference]: Finished difference. Result has 143 places, 178 transitions, 2265 flow [2024-02-05 10:29:12,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2265, PETRI_PLACES=143, PETRI_TRANSITIONS=178} [2024-02-05 10:29:12,947 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 62 predicate places. [2024-02-05 10:29:12,947 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 178 transitions, 2265 flow [2024-02-05 10:29:12,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:12,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:12,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:12,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-05 10:29:12,948 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:12,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2063878690, now seen corresponding path program 2 times [2024-02-05 10:29:12,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:12,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769346773] [2024-02-05 10:29:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:13,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:13,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769346773] [2024-02-05 10:29:13,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769346773] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:13,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:13,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:13,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300254377] [2024-02-05 10:29:13,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:13,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:13,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:13,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:13,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 178 transitions, 2265 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:13,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:13,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:13,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:13,765 INFO L124 PetriNetUnfolderBase]: 2060/4048 cut-off events. [2024-02-05 10:29:13,765 INFO L125 PetriNetUnfolderBase]: For 23291/23486 co-relation queries the response was YES. [2024-02-05 10:29:13,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17038 conditions, 4048 events. 2060/4048 cut-off events. For 23291/23486 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 27478 event pairs, 658 based on Foata normal form. 74/3816 useless extension candidates. Maximal degree in co-relation 16976. Up to 1590 conditions per place. [2024-02-05 10:29:13,800 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 139 selfloop transitions, 78 changer transitions 0/240 dead transitions. [2024-02-05 10:29:13,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 240 transitions, 2990 flow [2024-02-05 10:29:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 276 transitions. [2024-02-05 10:29:13,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120593692022264 [2024-02-05 10:29:13,802 INFO L175 Difference]: Start difference. First operand has 143 places, 178 transitions, 2265 flow. Second operand 7 states and 276 transitions. [2024-02-05 10:29:13,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 240 transitions, 2990 flow [2024-02-05 10:29:13,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 240 transitions, 2901 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:13,847 INFO L231 Difference]: Finished difference. Result has 148 places, 187 transitions, 2445 flow [2024-02-05 10:29:13,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2186, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2445, PETRI_PLACES=148, PETRI_TRANSITIONS=187} [2024-02-05 10:29:13,847 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 67 predicate places. [2024-02-05 10:29:13,848 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 187 transitions, 2445 flow [2024-02-05 10:29:13,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:13,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:13,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:13,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-05 10:29:13,849 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:13,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:13,849 INFO L85 PathProgramCache]: Analyzing trace with hash -787722504, now seen corresponding path program 1 times [2024-02-05 10:29:13,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:13,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845458705] [2024-02-05 10:29:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:13,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:14,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:14,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845458705] [2024-02-05 10:29:14,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845458705] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:14,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:14,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:14,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363174301] [2024-02-05 10:29:14,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:14,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:14,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:14,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:14,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:14,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:14,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 187 transitions, 2445 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:14,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:14,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:14,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:14,779 INFO L124 PetriNetUnfolderBase]: 2244/4288 cut-off events. [2024-02-05 10:29:14,780 INFO L125 PetriNetUnfolderBase]: For 26880/27164 co-relation queries the response was YES. [2024-02-05 10:29:14,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18726 conditions, 4288 events. 2244/4288 cut-off events. For 26880/27164 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 28376 event pairs, 544 based on Foata normal form. 84/4048 useless extension candidates. Maximal degree in co-relation 18662. Up to 1945 conditions per place. [2024-02-05 10:29:14,806 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 149 selfloop transitions, 71 changer transitions 0/242 dead transitions. [2024-02-05 10:29:14,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 242 transitions, 3121 flow [2024-02-05 10:29:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:14,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-02-05 10:29:14,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842300556586271 [2024-02-05 10:29:14,808 INFO L175 Difference]: Start difference. First operand has 148 places, 187 transitions, 2445 flow. Second operand 7 states and 261 transitions. [2024-02-05 10:29:14,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 242 transitions, 3121 flow [2024-02-05 10:29:14,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 242 transitions, 3010 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:14,855 INFO L231 Difference]: Finished difference. Result has 152 places, 187 transitions, 2492 flow [2024-02-05 10:29:14,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2492, PETRI_PLACES=152, PETRI_TRANSITIONS=187} [2024-02-05 10:29:14,856 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 71 predicate places. [2024-02-05 10:29:14,857 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 187 transitions, 2492 flow [2024-02-05 10:29:14,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:14,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:14,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:14,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-05 10:29:14,857 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:14,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:14,858 INFO L85 PathProgramCache]: Analyzing trace with hash 304671390, now seen corresponding path program 3 times [2024-02-05 10:29:14,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:14,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943335508] [2024-02-05 10:29:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:15,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:15,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943335508] [2024-02-05 10:29:15,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943335508] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:15,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:15,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:15,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148504782] [2024-02-05 10:29:15,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:15,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:15,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:15,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:15,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 187 transitions, 2492 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:15,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:15,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:15,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:15,682 INFO L124 PetriNetUnfolderBase]: 2152/4213 cut-off events. [2024-02-05 10:29:15,683 INFO L125 PetriNetUnfolderBase]: For 29184/29401 co-relation queries the response was YES. [2024-02-05 10:29:15,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18743 conditions, 4213 events. 2152/4213 cut-off events. For 29184/29401 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 28747 event pairs, 658 based on Foata normal form. 74/3978 useless extension candidates. Maximal degree in co-relation 18678. Up to 1623 conditions per place. [2024-02-05 10:29:15,711 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 139 selfloop transitions, 99 changer transitions 0/261 dead transitions. [2024-02-05 10:29:15,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 261 transitions, 3563 flow [2024-02-05 10:29:15,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 279 transitions. [2024-02-05 10:29:15,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176252319109462 [2024-02-05 10:29:15,713 INFO L175 Difference]: Start difference. First operand has 152 places, 187 transitions, 2492 flow. Second operand 7 states and 279 transitions. [2024-02-05 10:29:15,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 261 transitions, 3563 flow [2024-02-05 10:29:15,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 261 transitions, 3393 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:15,767 INFO L231 Difference]: Finished difference. Result has 154 places, 212 transitions, 2963 flow [2024-02-05 10:29:15,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2963, PETRI_PLACES=154, PETRI_TRANSITIONS=212} [2024-02-05 10:29:15,768 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 73 predicate places. [2024-02-05 10:29:15,768 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 212 transitions, 2963 flow [2024-02-05 10:29:15,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:15,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:15,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:15,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-05 10:29:15,769 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:15,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:15,769 INFO L85 PathProgramCache]: Analyzing trace with hash -591127240, now seen corresponding path program 2 times [2024-02-05 10:29:15,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:15,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312235149] [2024-02-05 10:29:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:15,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:15,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312235149] [2024-02-05 10:29:15,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312235149] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:15,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:15,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:15,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987197551] [2024-02-05 10:29:15,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:15,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:15,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:15,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:15,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:15,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:15,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 212 transitions, 2963 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:15,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:15,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:15,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:16,640 INFO L124 PetriNetUnfolderBase]: 2423/4532 cut-off events. [2024-02-05 10:29:16,640 INFO L125 PetriNetUnfolderBase]: For 31974/32289 co-relation queries the response was YES. [2024-02-05 10:29:16,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21162 conditions, 4532 events. 2423/4532 cut-off events. For 31974/32289 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 29830 event pairs, 564 based on Foata normal form. 43/4186 useless extension candidates. Maximal degree in co-relation 21096. Up to 1968 conditions per place. [2024-02-05 10:29:16,679 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 157 selfloop transitions, 80 changer transitions 0/259 dead transitions. [2024-02-05 10:29:16,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 259 transitions, 3679 flow [2024-02-05 10:29:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 230 transitions. [2024-02-05 10:29:16,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49783549783549785 [2024-02-05 10:29:16,682 INFO L175 Difference]: Start difference. First operand has 154 places, 212 transitions, 2963 flow. Second operand 6 states and 230 transitions. [2024-02-05 10:29:16,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 259 transitions, 3679 flow [2024-02-05 10:29:16,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 259 transitions, 3477 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:16,755 INFO L231 Difference]: Finished difference. Result has 153 places, 212 transitions, 2942 flow [2024-02-05 10:29:16,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2942, PETRI_PLACES=153, PETRI_TRANSITIONS=212} [2024-02-05 10:29:16,755 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 72 predicate places. [2024-02-05 10:29:16,755 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 212 transitions, 2942 flow [2024-02-05 10:29:16,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:16,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:16,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:16,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-05 10:29:16,756 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:16,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:16,757 INFO L85 PathProgramCache]: Analyzing trace with hash -568852684, now seen corresponding path program 3 times [2024-02-05 10:29:16,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:16,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473203869] [2024-02-05 10:29:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:16,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:16,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473203869] [2024-02-05 10:29:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473203869] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:16,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:16,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:16,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096688545] [2024-02-05 10:29:16,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:16,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:16,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:16,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:16,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:16,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 212 transitions, 2942 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:16,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:16,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:16,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:17,679 INFO L124 PetriNetUnfolderBase]: 2821/5164 cut-off events. [2024-02-05 10:29:17,679 INFO L125 PetriNetUnfolderBase]: For 35457/35828 co-relation queries the response was YES. [2024-02-05 10:29:17,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23850 conditions, 5164 events. 2821/5164 cut-off events. For 35457/35828 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 34457 event pairs, 630 based on Foata normal form. 124/4891 useless extension candidates. Maximal degree in co-relation 23785. Up to 2095 conditions per place. [2024-02-05 10:29:17,718 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 187 selfloop transitions, 77 changer transitions 0/286 dead transitions. [2024-02-05 10:29:17,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 286 transitions, 3954 flow [2024-02-05 10:29:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 259 transitions. [2024-02-05 10:29:17,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-02-05 10:29:17,720 INFO L175 Difference]: Start difference. First operand has 153 places, 212 transitions, 2942 flow. Second operand 7 states and 259 transitions. [2024-02-05 10:29:17,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 286 transitions, 3954 flow [2024-02-05 10:29:17,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 286 transitions, 3754 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:17,797 INFO L231 Difference]: Finished difference. Result has 154 places, 223 transitions, 3039 flow [2024-02-05 10:29:17,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2772, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3039, PETRI_PLACES=154, PETRI_TRANSITIONS=223} [2024-02-05 10:29:17,798 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 73 predicate places. [2024-02-05 10:29:17,798 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 223 transitions, 3039 flow [2024-02-05 10:29:17,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:17,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:17,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:17,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-05 10:29:17,799 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:17,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash -630634172, now seen corresponding path program 1 times [2024-02-05 10:29:17,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:17,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563553394] [2024-02-05 10:29:17,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:17,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:17,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563553394] [2024-02-05 10:29:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563553394] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:17,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:17,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614973306] [2024-02-05 10:29:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:17,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:17,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:17,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 223 transitions, 3039 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) [2024-02-05 10:29:17,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:17,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:17,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:18,728 INFO L124 PetriNetUnfolderBase]: 2905/5204 cut-off events. [2024-02-05 10:29:18,728 INFO L125 PetriNetUnfolderBase]: For 35936/36282 co-relation queries the response was YES. [2024-02-05 10:29:18,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24388 conditions, 5204 events. 2905/5204 cut-off events. For 35936/36282 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 34401 event pairs, 605 based on Foata normal form. 61/4896 useless extension candidates. Maximal degree in co-relation 24323. Up to 2821 conditions per place. [2024-02-05 10:29:18,770 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 214 selfloop transitions, 76 changer transitions 0/312 dead transitions. [2024-02-05 10:29:18,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 312 transitions, 4340 flow [2024-02-05 10:29:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:18,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2024-02-05 10:29:18,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-02-05 10:29:18,772 INFO L175 Difference]: Start difference. First operand has 154 places, 223 transitions, 3039 flow. Second operand 8 states and 284 transitions. [2024-02-05 10:29:18,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 312 transitions, 4340 flow [2024-02-05 10:29:18,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 312 transitions, 4252 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:18,848 INFO L231 Difference]: Finished difference. Result has 160 places, 238 transitions, 3262 flow [2024-02-05 10:29:18,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3262, PETRI_PLACES=160, PETRI_TRANSITIONS=238} [2024-02-05 10:29:18,849 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 79 predicate places. [2024-02-05 10:29:18,849 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 238 transitions, 3262 flow [2024-02-05 10:29:18,849 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) [2024-02-05 10:29:18,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:18,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:18,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-05 10:29:18,849 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:18,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:18,850 INFO L85 PathProgramCache]: Analyzing trace with hash -447316722, now seen corresponding path program 4 times [2024-02-05 10:29:18,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:18,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272667885] [2024-02-05 10:29:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:18,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:19,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:19,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272667885] [2024-02-05 10:29:19,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272667885] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:19,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:19,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137965077] [2024-02-05 10:29:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:19,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:19,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:19,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:19,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 238 transitions, 3262 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:19,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:19,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:19,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:19,872 INFO L124 PetriNetUnfolderBase]: 2982/5451 cut-off events. [2024-02-05 10:29:19,872 INFO L125 PetriNetUnfolderBase]: For 39644/39985 co-relation queries the response was YES. [2024-02-05 10:29:19,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25289 conditions, 5451 events. 2982/5451 cut-off events. For 39644/39985 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 36761 event pairs, 686 based on Foata normal form. 122/5199 useless extension candidates. Maximal degree in co-relation 25222. Up to 2254 conditions per place. [2024-02-05 10:29:19,913 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 161 selfloop transitions, 116 changer transitions 0/299 dead transitions. [2024-02-05 10:29:19,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 299 transitions, 4187 flow [2024-02-05 10:29:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 264 transitions. [2024-02-05 10:29:19,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-02-05 10:29:19,915 INFO L175 Difference]: Start difference. First operand has 160 places, 238 transitions, 3262 flow. Second operand 7 states and 264 transitions. [2024-02-05 10:29:19,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 299 transitions, 4187 flow [2024-02-05 10:29:20,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 299 transitions, 4100 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-05 10:29:20,015 INFO L231 Difference]: Finished difference. Result has 166 places, 244 transitions, 3529 flow [2024-02-05 10:29:20,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3181, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3529, PETRI_PLACES=166, PETRI_TRANSITIONS=244} [2024-02-05 10:29:20,019 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 85 predicate places. [2024-02-05 10:29:20,020 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 244 transitions, 3529 flow [2024-02-05 10:29:20,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:20,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:20,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:20,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-05 10:29:20,021 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:20,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash -509098210, now seen corresponding path program 2 times [2024-02-05 10:29:20,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:20,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556035871] [2024-02-05 10:29:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:20,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:20,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:20,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556035871] [2024-02-05 10:29:20,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556035871] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:20,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:20,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:20,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329788294] [2024-02-05 10:29:20,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:20,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:20,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:20,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:20,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:20,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:20,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 244 transitions, 3529 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) [2024-02-05 10:29:20,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:20,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:20,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:21,099 INFO L124 PetriNetUnfolderBase]: 3020/5418 cut-off events. [2024-02-05 10:29:21,099 INFO L125 PetriNetUnfolderBase]: For 46787/47107 co-relation queries the response was YES. [2024-02-05 10:29:21,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26820 conditions, 5418 events. 3020/5418 cut-off events. For 46787/47107 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 36184 event pairs, 609 based on Foata normal form. 39/5098 useless extension candidates. Maximal degree in co-relation 26750. Up to 2957 conditions per place. [2024-02-05 10:29:21,149 INFO L140 encePairwiseOnDemand]: 63/77 looper letters, 199 selfloop transitions, 99 changer transitions 0/320 dead transitions. [2024-02-05 10:29:21,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 320 transitions, 4758 flow [2024-02-05 10:29:21,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 281 transitions. [2024-02-05 10:29:21,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616883116883117 [2024-02-05 10:29:21,150 INFO L175 Difference]: Start difference. First operand has 166 places, 244 transitions, 3529 flow. Second operand 8 states and 281 transitions. [2024-02-05 10:29:21,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 320 transitions, 4758 flow [2024-02-05 10:29:21,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 320 transitions, 4540 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:21,256 INFO L231 Difference]: Finished difference. Result has 170 places, 264 transitions, 3784 flow [2024-02-05 10:29:21,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3784, PETRI_PLACES=170, PETRI_TRANSITIONS=264} [2024-02-05 10:29:21,257 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 89 predicate places. [2024-02-05 10:29:21,257 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 264 transitions, 3784 flow [2024-02-05 10:29:21,257 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) [2024-02-05 10:29:21,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:21,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:21,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-05 10:29:21,257 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:21,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash 403931656, now seen corresponding path program 3 times [2024-02-05 10:29:21,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:21,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171988081] [2024-02-05 10:29:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:21,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:21,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:21,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171988081] [2024-02-05 10:29:21,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171988081] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:21,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:21,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:21,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306785469] [2024-02-05 10:29:21,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:21,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:21,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:21,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:21,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:21,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:21,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 264 transitions, 3784 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) [2024-02-05 10:29:21,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:21,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:21,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:22,329 INFO L124 PetriNetUnfolderBase]: 3116/5578 cut-off events. [2024-02-05 10:29:22,329 INFO L125 PetriNetUnfolderBase]: For 45907/46235 co-relation queries the response was YES. [2024-02-05 10:29:22,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27741 conditions, 5578 events. 3116/5578 cut-off events. For 45907/46235 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 37243 event pairs, 595 based on Foata normal form. 31/5250 useless extension candidates. Maximal degree in co-relation 27669. Up to 2971 conditions per place. [2024-02-05 10:29:22,384 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 197 selfloop transitions, 119 changer transitions 0/338 dead transitions. [2024-02-05 10:29:22,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 338 transitions, 5019 flow [2024-02-05 10:29:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:22,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 279 transitions. [2024-02-05 10:29:22,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45292207792207795 [2024-02-05 10:29:22,385 INFO L175 Difference]: Start difference. First operand has 170 places, 264 transitions, 3784 flow. Second operand 8 states and 279 transitions. [2024-02-05 10:29:22,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 338 transitions, 5019 flow [2024-02-05 10:29:22,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 338 transitions, 4909 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:22,496 INFO L231 Difference]: Finished difference. Result has 176 places, 284 transitions, 4159 flow [2024-02-05 10:29:22,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3687, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4159, PETRI_PLACES=176, PETRI_TRANSITIONS=284} [2024-02-05 10:29:22,497 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 95 predicate places. [2024-02-05 10:29:22,497 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 284 transitions, 4159 flow [2024-02-05 10:29:22,497 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) [2024-02-05 10:29:22,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:22,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:22,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-05 10:29:22,497 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:22,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:22,498 INFO L85 PathProgramCache]: Analyzing trace with hash 405124846, now seen corresponding path program 4 times [2024-02-05 10:29:22,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:22,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976964062] [2024-02-05 10:29:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:22,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:22,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:22,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976964062] [2024-02-05 10:29:22,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976964062] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:22,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:22,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844218901] [2024-02-05 10:29:22,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:22,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:22,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:22,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 284 transitions, 4159 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) [2024-02-05 10:29:22,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:22,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:22,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:23,592 INFO L124 PetriNetUnfolderBase]: 3146/5628 cut-off events. [2024-02-05 10:29:23,592 INFO L125 PetriNetUnfolderBase]: For 50325/50661 co-relation queries the response was YES. [2024-02-05 10:29:23,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28818 conditions, 5628 events. 3146/5628 cut-off events. For 50325/50661 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 37628 event pairs, 615 based on Foata normal form. 25/5294 useless extension candidates. Maximal degree in co-relation 28744. Up to 2983 conditions per place. [2024-02-05 10:29:23,631 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 198 selfloop transitions, 124 changer transitions 0/344 dead transitions. [2024-02-05 10:29:23,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 344 transitions, 5315 flow [2024-02-05 10:29:23,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2024-02-05 10:29:23,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-02-05 10:29:23,633 INFO L175 Difference]: Start difference. First operand has 176 places, 284 transitions, 4159 flow. Second operand 8 states and 278 transitions. [2024-02-05 10:29:23,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 344 transitions, 5315 flow [2024-02-05 10:29:23,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 344 transitions, 5160 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:23,732 INFO L231 Difference]: Finished difference. Result has 181 places, 292 transitions, 4405 flow [2024-02-05 10:29:23,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4405, PETRI_PLACES=181, PETRI_TRANSITIONS=292} [2024-02-05 10:29:23,732 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 100 predicate places. [2024-02-05 10:29:23,732 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 292 transitions, 4405 flow [2024-02-05 10:29:23,733 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) [2024-02-05 10:29:23,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:23,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:23,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-02-05 10:29:23,733 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:23,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1714653069, now seen corresponding path program 1 times [2024-02-05 10:29:23,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:23,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899785073] [2024-02-05 10:29:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:23,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:23,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:23,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899785073] [2024-02-05 10:29:23,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899785073] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:23,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724808259] [2024-02-05 10:29:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:23,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:23,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:23,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:23,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:23,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 292 transitions, 4405 flow. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:23,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:23,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:23,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:24,650 INFO L124 PetriNetUnfolderBase]: 2399/4768 cut-off events. [2024-02-05 10:29:24,650 INFO L125 PetriNetUnfolderBase]: For 52223/52681 co-relation queries the response was YES. [2024-02-05 10:29:24,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24986 conditions, 4768 events. 2399/4768 cut-off events. For 52223/52681 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 34849 event pairs, 672 based on Foata normal form. 76/4517 useless extension candidates. Maximal degree in co-relation 24910. Up to 3496 conditions per place. [2024-02-05 10:29:24,693 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 244 selfloop transitions, 36 changer transitions 0/334 dead transitions. [2024-02-05 10:29:24,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 334 transitions, 5259 flow [2024-02-05 10:29:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2024-02-05 10:29:24,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658627087198516 [2024-02-05 10:29:24,694 INFO L175 Difference]: Start difference. First operand has 181 places, 292 transitions, 4405 flow. Second operand 7 states and 305 transitions. [2024-02-05 10:29:24,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 334 transitions, 5259 flow [2024-02-05 10:29:24,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 334 transitions, 5023 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:24,795 INFO L231 Difference]: Finished difference. Result has 185 places, 306 transitions, 4445 flow [2024-02-05 10:29:24,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4171, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4445, PETRI_PLACES=185, PETRI_TRANSITIONS=306} [2024-02-05 10:29:24,796 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 104 predicate places. [2024-02-05 10:29:24,796 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 306 transitions, 4445 flow [2024-02-05 10:29:24,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:24,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:24,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:24,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-05 10:29:24,797 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:24,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:24,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1418014083, now seen corresponding path program 1 times [2024-02-05 10:29:24,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:24,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987837990] [2024-02-05 10:29:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:24,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:24,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:24,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987837990] [2024-02-05 10:29:24,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987837990] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:24,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:24,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:24,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396861044] [2024-02-05 10:29:24,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:24,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:24,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:24,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:24,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:25,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:25,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 306 transitions, 4445 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:25,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:25,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:25,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:25,969 INFO L124 PetriNetUnfolderBase]: 2961/5412 cut-off events. [2024-02-05 10:29:25,969 INFO L125 PetriNetUnfolderBase]: For 51831/52183 co-relation queries the response was YES. [2024-02-05 10:29:25,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27847 conditions, 5412 events. 2961/5412 cut-off events. For 51831/52183 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 36216 event pairs, 663 based on Foata normal form. 102/5116 useless extension candidates. Maximal degree in co-relation 27768. Up to 2484 conditions per place. [2024-02-05 10:29:26,020 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 249 selfloop transitions, 107 changer transitions 0/378 dead transitions. [2024-02-05 10:29:26,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 378 transitions, 5805 flow [2024-02-05 10:29:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-02-05 10:29:26,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842300556586271 [2024-02-05 10:29:26,022 INFO L175 Difference]: Start difference. First operand has 185 places, 306 transitions, 4445 flow. Second operand 7 states and 261 transitions. [2024-02-05 10:29:26,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 378 transitions, 5805 flow [2024-02-05 10:29:26,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 378 transitions, 5739 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-02-05 10:29:26,135 INFO L231 Difference]: Finished difference. Result has 191 places, 318 transitions, 4891 flow [2024-02-05 10:29:26,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4381, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4891, PETRI_PLACES=191, PETRI_TRANSITIONS=318} [2024-02-05 10:29:26,136 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 110 predicate places. [2024-02-05 10:29:26,136 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 318 transitions, 4891 flow [2024-02-05 10:29:26,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:26,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:26,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:26,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-05 10:29:26,136 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:26,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1652303135, now seen corresponding path program 1 times [2024-02-05 10:29:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657065969] [2024-02-05 10:29:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:26,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:26,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657065969] [2024-02-05 10:29:26,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657065969] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:26,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:26,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:26,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522096700] [2024-02-05 10:29:26,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:26,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:26,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:26,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:26,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:26,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:26,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 318 transitions, 4891 flow. Second operand has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:26,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:26,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:26,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:27,319 INFO L124 PetriNetUnfolderBase]: 2267/4544 cut-off events. [2024-02-05 10:29:27,319 INFO L125 PetriNetUnfolderBase]: For 56749/57252 co-relation queries the response was YES. [2024-02-05 10:29:27,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25181 conditions, 4544 events. 2267/4544 cut-off events. For 56749/57252 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 33140 event pairs, 422 based on Foata normal form. 62/4296 useless extension candidates. Maximal degree in co-relation 25100. Up to 2085 conditions per place. [2024-02-05 10:29:27,367 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 183 selfloop transitions, 140 changer transitions 0/377 dead transitions. [2024-02-05 10:29:27,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 377 transitions, 6260 flow [2024-02-05 10:29:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 317 transitions. [2024-02-05 10:29:27,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.588126159554731 [2024-02-05 10:29:27,369 INFO L175 Difference]: Start difference. First operand has 191 places, 318 transitions, 4891 flow. Second operand 7 states and 317 transitions. [2024-02-05 10:29:27,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 377 transitions, 6260 flow [2024-02-05 10:29:27,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 377 transitions, 6022 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:27,500 INFO L231 Difference]: Finished difference. Result has 195 places, 341 transitions, 5522 flow [2024-02-05 10:29:27,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4679, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5522, PETRI_PLACES=195, PETRI_TRANSITIONS=341} [2024-02-05 10:29:27,501 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 114 predicate places. [2024-02-05 10:29:27,501 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 341 transitions, 5522 flow [2024-02-05 10:29:27,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:27,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:27,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:27,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-05 10:29:27,502 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:27,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash 478673720, now seen corresponding path program 1 times [2024-02-05 10:29:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:27,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431653073] [2024-02-05 10:29:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:27,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:27,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431653073] [2024-02-05 10:29:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431653073] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:27,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:27,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:27,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224172795] [2024-02-05 10:29:27,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:27,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:27,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:27,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:27,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:27,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:27,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 341 transitions, 5522 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) [2024-02-05 10:29:27,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:27,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:27,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:28,769 INFO L124 PetriNetUnfolderBase]: 3235/5999 cut-off events. [2024-02-05 10:29:28,769 INFO L125 PetriNetUnfolderBase]: For 67250/67646 co-relation queries the response was YES. [2024-02-05 10:29:28,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32538 conditions, 5999 events. 3235/5999 cut-off events. For 67250/67646 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 41521 event pairs, 870 based on Foata normal form. 47/5729 useless extension candidates. Maximal degree in co-relation 32454. Up to 2730 conditions per place. [2024-02-05 10:29:28,828 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 266 selfloop transitions, 132 changer transitions 0/420 dead transitions. [2024-02-05 10:29:28,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 420 transitions, 6947 flow [2024-02-05 10:29:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 296 transitions. [2024-02-05 10:29:28,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-02-05 10:29:28,829 INFO L175 Difference]: Start difference. First operand has 195 places, 341 transitions, 5522 flow. Second operand 8 states and 296 transitions. [2024-02-05 10:29:28,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 420 transitions, 6947 flow [2024-02-05 10:29:28,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 420 transitions, 6792 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-02-05 10:29:28,986 INFO L231 Difference]: Finished difference. Result has 202 places, 349 transitions, 5804 flow [2024-02-05 10:29:28,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=5420, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5804, PETRI_PLACES=202, PETRI_TRANSITIONS=349} [2024-02-05 10:29:28,986 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 121 predicate places. [2024-02-05 10:29:28,986 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 349 transitions, 5804 flow [2024-02-05 10:29:28,987 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) [2024-02-05 10:29:28,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:28,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:28,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-05 10:29:28,987 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:28,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:28,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2049937166, now seen corresponding path program 1 times [2024-02-05 10:29:28,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:28,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451650824] [2024-02-05 10:29:28,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:28,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:29,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:29,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451650824] [2024-02-05 10:29:29,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451650824] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:29,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:29,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107035293] [2024-02-05 10:29:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:29,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:29,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:29,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:29,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:29,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:29,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 349 transitions, 5804 flow. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:29,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:29,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:29,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:29,993 INFO L124 PetriNetUnfolderBase]: 2452/4952 cut-off events. [2024-02-05 10:29:29,993 INFO L125 PetriNetUnfolderBase]: For 69557/70151 co-relation queries the response was YES. [2024-02-05 10:29:30,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27879 conditions, 4952 events. 2452/4952 cut-off events. For 69557/70151 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 36988 event pairs, 551 based on Foata normal form. 87/4786 useless extension candidates. Maximal degree in co-relation 27793. Up to 2117 conditions per place. [2024-02-05 10:29:30,049 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 212 selfloop transitions, 130 changer transitions 0/396 dead transitions. [2024-02-05 10:29:30,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 396 transitions, 6939 flow [2024-02-05 10:29:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 314 transitions. [2024-02-05 10:29:30,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5825602968460112 [2024-02-05 10:29:30,051 INFO L175 Difference]: Start difference. First operand has 202 places, 349 transitions, 5804 flow. Second operand 7 states and 314 transitions. [2024-02-05 10:29:30,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 396 transitions, 6939 flow [2024-02-05 10:29:30,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 396 transitions, 6824 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:30,209 INFO L231 Difference]: Finished difference. Result has 208 places, 361 transitions, 6251 flow [2024-02-05 10:29:30,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=5691, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6251, PETRI_PLACES=208, PETRI_TRANSITIONS=361} [2024-02-05 10:29:30,210 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 127 predicate places. [2024-02-05 10:29:30,210 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 361 transitions, 6251 flow [2024-02-05 10:29:30,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:30,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:30,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:30,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-05 10:29:30,211 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:30,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1994590140, now seen corresponding path program 2 times [2024-02-05 10:29:30,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:30,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927326173] [2024-02-05 10:29:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:30,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:30,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:30,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927326173] [2024-02-05 10:29:30,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927326173] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:30,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:30,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:29:30,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265458334] [2024-02-05 10:29:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:30,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:29:30,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:30,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:29:30,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:29:30,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:30,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 361 transitions, 6251 flow. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:30,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:30,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:30,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:31,221 INFO L124 PetriNetUnfolderBase]: 2428/4912 cut-off events. [2024-02-05 10:29:31,221 INFO L125 PetriNetUnfolderBase]: For 74110/74684 co-relation queries the response was YES. [2024-02-05 10:29:31,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28396 conditions, 4912 events. 2428/4912 cut-off events. For 74110/74684 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 36657 event pairs, 539 based on Foata normal form. 87/4746 useless extension candidates. Maximal degree in co-relation 28307. Up to 2113 conditions per place. [2024-02-05 10:29:31,272 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 212 selfloop transitions, 129 changer transitions 0/395 dead transitions. [2024-02-05 10:29:31,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 395 transitions, 7205 flow [2024-02-05 10:29:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 310 transitions. [2024-02-05 10:29:31,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575139146567718 [2024-02-05 10:29:31,274 INFO L175 Difference]: Start difference. First operand has 208 places, 361 transitions, 6251 flow. Second operand 7 states and 310 transitions. [2024-02-05 10:29:31,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 395 transitions, 7205 flow [2024-02-05 10:29:31,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 395 transitions, 7050 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:31,435 INFO L231 Difference]: Finished difference. Result has 212 places, 363 transitions, 6390 flow [2024-02-05 10:29:31,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6098, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6390, PETRI_PLACES=212, PETRI_TRANSITIONS=363} [2024-02-05 10:29:31,436 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 131 predicate places. [2024-02-05 10:29:31,436 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 363 transitions, 6390 flow [2024-02-05 10:29:31,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:31,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:31,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:31,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-02-05 10:29:31,437 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:31,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1972351255, now seen corresponding path program 1 times [2024-02-05 10:29:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:31,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260136539] [2024-02-05 10:29:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:31,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:31,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:31,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260136539] [2024-02-05 10:29:31,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260136539] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:31,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:31,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:31,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202062886] [2024-02-05 10:29:31,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:31,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:31,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:31,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:31,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:31,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:31,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 363 transitions, 6390 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:31,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:31,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:31,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:32,646 INFO L124 PetriNetUnfolderBase]: 2706/5311 cut-off events. [2024-02-05 10:29:32,646 INFO L125 PetriNetUnfolderBase]: For 81839/82423 co-relation queries the response was YES. [2024-02-05 10:29:32,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31061 conditions, 5311 events. 2706/5311 cut-off events. For 81839/82423 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 38329 event pairs, 733 based on Foata normal form. 158/5203 useless extension candidates. Maximal degree in co-relation 30971. Up to 2344 conditions per place. [2024-02-05 10:29:32,700 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 223 selfloop transitions, 132 changer transitions 0/395 dead transitions. [2024-02-05 10:29:32,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 395 transitions, 7328 flow [2024-02-05 10:29:32,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-02-05 10:29:32,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48917748917748916 [2024-02-05 10:29:32,701 INFO L175 Difference]: Start difference. First operand has 212 places, 363 transitions, 6390 flow. Second operand 6 states and 226 transitions. [2024-02-05 10:29:32,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 395 transitions, 7328 flow [2024-02-05 10:29:32,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 395 transitions, 7117 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:32,880 INFO L231 Difference]: Finished difference. Result has 214 places, 363 transitions, 6531 flow [2024-02-05 10:29:32,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6185, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6531, PETRI_PLACES=214, PETRI_TRANSITIONS=363} [2024-02-05 10:29:32,883 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 133 predicate places. [2024-02-05 10:29:32,883 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 363 transitions, 6531 flow [2024-02-05 10:29:32,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:32,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:32,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:32,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-02-05 10:29:32,884 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:32,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1257525028, now seen corresponding path program 1 times [2024-02-05 10:29:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:32,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63362186] [2024-02-05 10:29:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:32,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:33,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:33,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63362186] [2024-02-05 10:29:33,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63362186] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:33,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957475003] [2024-02-05 10:29:33,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:33,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:33,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:33,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:33,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:33,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:33,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 363 transitions, 6531 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:33,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:33,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:33,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:34,068 INFO L124 PetriNetUnfolderBase]: 2730/5372 cut-off events. [2024-02-05 10:29:34,068 INFO L125 PetriNetUnfolderBase]: For 86673/87230 co-relation queries the response was YES. [2024-02-05 10:29:34,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31541 conditions, 5372 events. 2730/5372 cut-off events. For 86673/87230 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38841 event pairs, 840 based on Foata normal form. 83/5193 useless extension candidates. Maximal degree in co-relation 31450. Up to 4061 conditions per place. [2024-02-05 10:29:34,123 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 324 selfloop transitions, 43 changer transitions 0/407 dead transitions. [2024-02-05 10:29:34,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 407 transitions, 7548 flow [2024-02-05 10:29:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-02-05 10:29:34,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-02-05 10:29:34,125 INFO L175 Difference]: Start difference. First operand has 214 places, 363 transitions, 6531 flow. Second operand 8 states and 275 transitions. [2024-02-05 10:29:34,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 407 transitions, 7548 flow [2024-02-05 10:29:34,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 407 transitions, 7266 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:34,321 INFO L231 Difference]: Finished difference. Result has 219 places, 375 transitions, 6481 flow [2024-02-05 10:29:34,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6481, PETRI_PLACES=219, PETRI_TRANSITIONS=375} [2024-02-05 10:29:34,322 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 138 predicate places. [2024-02-05 10:29:34,322 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 375 transitions, 6481 flow [2024-02-05 10:29:34,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:34,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:34,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:34,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-02-05 10:29:34,323 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:34,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:34,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1587052860, now seen corresponding path program 2 times [2024-02-05 10:29:34,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:34,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015755311] [2024-02-05 10:29:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:34,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:34,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015755311] [2024-02-05 10:29:34,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015755311] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:34,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:34,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:34,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071628385] [2024-02-05 10:29:34,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:34,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:34,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:34,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:34,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:34,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:34,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 375 transitions, 6481 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:34,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:34,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:34,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:35,466 INFO L124 PetriNetUnfolderBase]: 2748/5394 cut-off events. [2024-02-05 10:29:35,467 INFO L125 PetriNetUnfolderBase]: For 82798/83363 co-relation queries the response was YES. [2024-02-05 10:29:35,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31109 conditions, 5394 events. 2748/5394 cut-off events. For 82798/83363 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38909 event pairs, 838 based on Foata normal form. 91/5221 useless extension candidates. Maximal degree in co-relation 31016. Up to 4077 conditions per place. [2024-02-05 10:29:35,525 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 324 selfloop transitions, 47 changer transitions 0/411 dead transitions. [2024-02-05 10:29:35,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 411 transitions, 7410 flow [2024-02-05 10:29:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-02-05 10:29:35,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-02-05 10:29:35,527 INFO L175 Difference]: Start difference. First operand has 219 places, 375 transitions, 6481 flow. Second operand 8 states and 275 transitions. [2024-02-05 10:29:35,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 411 transitions, 7410 flow [2024-02-05 10:29:35,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 411 transitions, 7354 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:35,812 INFO L231 Difference]: Finished difference. Result has 224 places, 377 transitions, 6539 flow [2024-02-05 10:29:35,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6539, PETRI_PLACES=224, PETRI_TRANSITIONS=377} [2024-02-05 10:29:35,812 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 143 predicate places. [2024-02-05 10:29:35,812 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 377 transitions, 6539 flow [2024-02-05 10:29:35,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:35,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:35,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:35,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-02-05 10:29:35,813 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:35,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:35,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2020706910, now seen corresponding path program 3 times [2024-02-05 10:29:35,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:35,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841279751] [2024-02-05 10:29:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:35,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:35,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:35,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841279751] [2024-02-05 10:29:35,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841279751] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:35,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:35,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:35,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041308280] [2024-02-05 10:29:35,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:35,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:35,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:35,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:35,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:35,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:35,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 377 transitions, 6539 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:35,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:35,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:35,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:36,937 INFO L124 PetriNetUnfolderBase]: 2742/5384 cut-off events. [2024-02-05 10:29:36,937 INFO L125 PetriNetUnfolderBase]: For 83648/84213 co-relation queries the response was YES. [2024-02-05 10:29:36,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31122 conditions, 5384 events. 2742/5384 cut-off events. For 83648/84213 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38820 event pairs, 838 based on Foata normal form. 91/5211 useless extension candidates. Maximal degree in co-relation 31028. Up to 4077 conditions per place. [2024-02-05 10:29:36,992 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 323 selfloop transitions, 49 changer transitions 0/412 dead transitions. [2024-02-05 10:29:36,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 412 transitions, 7455 flow [2024-02-05 10:29:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-02-05 10:29:36,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-02-05 10:29:36,993 INFO L175 Difference]: Start difference. First operand has 224 places, 377 transitions, 6539 flow. Second operand 8 states and 275 transitions. [2024-02-05 10:29:36,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 412 transitions, 7455 flow [2024-02-05 10:29:37,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 412 transitions, 7392 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:37,189 INFO L231 Difference]: Finished difference. Result has 228 places, 377 transitions, 6579 flow [2024-02-05 10:29:37,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6476, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6579, PETRI_PLACES=228, PETRI_TRANSITIONS=377} [2024-02-05 10:29:37,190 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 147 predicate places. [2024-02-05 10:29:37,190 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 377 transitions, 6579 flow [2024-02-05 10:29:37,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:37,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:37,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:37,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-02-05 10:29:37,191 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:37,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1007245532, now seen corresponding path program 4 times [2024-02-05 10:29:37,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:37,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883096370] [2024-02-05 10:29:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:37,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:37,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883096370] [2024-02-05 10:29:37,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883096370] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:37,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:37,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:37,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958998949] [2024-02-05 10:29:37,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:37,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:37,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:37,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:37,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:37,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:37,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 377 transitions, 6579 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:37,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:37,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:37,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:38,275 INFO L124 PetriNetUnfolderBase]: 2724/5341 cut-off events. [2024-02-05 10:29:38,275 INFO L125 PetriNetUnfolderBase]: For 84673/85257 co-relation queries the response was YES. [2024-02-05 10:29:38,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30957 conditions, 5341 events. 2724/5341 cut-off events. For 84673/85257 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38593 event pairs, 871 based on Foata normal form. 83/5158 useless extension candidates. Maximal degree in co-relation 30863. Up to 4065 conditions per place. [2024-02-05 10:29:38,331 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 322 selfloop transitions, 49 changer transitions 0/411 dead transitions. [2024-02-05 10:29:38,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 411 transitions, 7542 flow [2024-02-05 10:29:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:38,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 271 transitions. [2024-02-05 10:29:38,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43993506493506496 [2024-02-05 10:29:38,332 INFO L175 Difference]: Start difference. First operand has 228 places, 377 transitions, 6579 flow. Second operand 8 states and 271 transitions. [2024-02-05 10:29:38,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 411 transitions, 7542 flow [2024-02-05 10:29:38,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 411 transitions, 7480 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:38,537 INFO L231 Difference]: Finished difference. Result has 233 places, 383 transitions, 6702 flow [2024-02-05 10:29:38,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6521, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6702, PETRI_PLACES=233, PETRI_TRANSITIONS=383} [2024-02-05 10:29:38,538 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 152 predicate places. [2024-02-05 10:29:38,538 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 383 transitions, 6702 flow [2024-02-05 10:29:38,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:38,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:38,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:38,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-02-05 10:29:38,539 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:38,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash -757804611, now seen corresponding path program 1 times [2024-02-05 10:29:38,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:38,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429446367] [2024-02-05 10:29:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:38,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429446367] [2024-02-05 10:29:38,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429446367] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:38,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135787477] [2024-02-05 10:29:38,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:38,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:38,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:38,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 383 transitions, 6702 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:38,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:38,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:38,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:39,739 INFO L124 PetriNetUnfolderBase]: 3092/5756 cut-off events. [2024-02-05 10:29:39,739 INFO L125 PetriNetUnfolderBase]: For 83326/83700 co-relation queries the response was YES. [2024-02-05 10:29:39,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32809 conditions, 5756 events. 3092/5756 cut-off events. For 83326/83700 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 39510 event pairs, 721 based on Foata normal form. 35/5485 useless extension candidates. Maximal degree in co-relation 32713. Up to 2466 conditions per place. [2024-02-05 10:29:39,803 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 290 selfloop transitions, 126 changer transitions 0/442 dead transitions. [2024-02-05 10:29:39,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 442 transitions, 7998 flow [2024-02-05 10:29:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 280 transitions. [2024-02-05 10:29:39,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-02-05 10:29:39,805 INFO L175 Difference]: Start difference. First operand has 233 places, 383 transitions, 6702 flow. Second operand 8 states and 280 transitions. [2024-02-05 10:29:39,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 442 transitions, 7998 flow [2024-02-05 10:29:39,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 442 transitions, 7946 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:29:39,998 INFO L231 Difference]: Finished difference. Result has 239 places, 383 transitions, 6911 flow [2024-02-05 10:29:39,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6650, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6911, PETRI_PLACES=239, PETRI_TRANSITIONS=383} [2024-02-05 10:29:39,999 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 158 predicate places. [2024-02-05 10:29:39,999 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 383 transitions, 6911 flow [2024-02-05 10:29:39,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:39,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:39,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:39,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-02-05 10:29:39,999 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:40,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash -449037657, now seen corresponding path program 2 times [2024-02-05 10:29:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:40,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220537295] [2024-02-05 10:29:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:40,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:40,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:40,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220537295] [2024-02-05 10:29:40,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220537295] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:40,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:40,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:40,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154751301] [2024-02-05 10:29:40,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:40,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:40,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:40,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:40,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:40,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:40,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 383 transitions, 6911 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:40,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:40,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:40,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:41,243 INFO L124 PetriNetUnfolderBase]: 3080/5735 cut-off events. [2024-02-05 10:29:41,244 INFO L125 PetriNetUnfolderBase]: For 88909/89280 co-relation queries the response was YES. [2024-02-05 10:29:41,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33275 conditions, 5735 events. 3080/5735 cut-off events. For 88909/89280 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 39332 event pairs, 721 based on Foata normal form. 27/5452 useless extension candidates. Maximal degree in co-relation 33177. Up to 2466 conditions per place. [2024-02-05 10:29:41,318 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 288 selfloop transitions, 125 changer transitions 0/439 dead transitions. [2024-02-05 10:29:41,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 439 transitions, 8169 flow [2024-02-05 10:29:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-02-05 10:29:41,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-02-05 10:29:41,320 INFO L175 Difference]: Start difference. First operand has 239 places, 383 transitions, 6911 flow. Second operand 8 states and 275 transitions. [2024-02-05 10:29:41,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 439 transitions, 8169 flow [2024-02-05 10:29:41,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 439 transitions, 8030 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:29:41,546 INFO L231 Difference]: Finished difference. Result has 245 places, 383 transitions, 7029 flow [2024-02-05 10:29:41,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6772, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7029, PETRI_PLACES=245, PETRI_TRANSITIONS=383} [2024-02-05 10:29:41,547 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 164 predicate places. [2024-02-05 10:29:41,547 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 383 transitions, 7029 flow [2024-02-05 10:29:41,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:41,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:41,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:41,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-02-05 10:29:41,553 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:41,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:41,553 INFO L85 PathProgramCache]: Analyzing trace with hash -903271118, now seen corresponding path program 2 times [2024-02-05 10:29:41,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:41,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516711842] [2024-02-05 10:29:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:41,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:41,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:41,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516711842] [2024-02-05 10:29:41,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516711842] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:41,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:41,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:41,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947740075] [2024-02-05 10:29:41,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:41,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:41,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:41,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:41,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 383 transitions, 7029 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) [2024-02-05 10:29:41,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:41,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:41,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:42,887 INFO L124 PetriNetUnfolderBase]: 3154/5849 cut-off events. [2024-02-05 10:29:42,887 INFO L125 PetriNetUnfolderBase]: For 96241/96603 co-relation queries the response was YES. [2024-02-05 10:29:42,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33989 conditions, 5849 events. 3154/5849 cut-off events. For 96241/96603 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 40168 event pairs, 689 based on Foata normal form. 63/5611 useless extension candidates. Maximal degree in co-relation 33889. Up to 2497 conditions per place. [2024-02-05 10:29:42,948 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 258 selfloop transitions, 147 changer transitions 0/431 dead transitions. [2024-02-05 10:29:42,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 431 transitions, 8186 flow [2024-02-05 10:29:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2024-02-05 10:29:42,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46382189239332094 [2024-02-05 10:29:42,950 INFO L175 Difference]: Start difference. First operand has 245 places, 383 transitions, 7029 flow. Second operand 7 states and 250 transitions. [2024-02-05 10:29:42,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 431 transitions, 8186 flow [2024-02-05 10:29:43,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 431 transitions, 7870 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:43,160 INFO L231 Difference]: Finished difference. Result has 246 places, 392 transitions, 7199 flow [2024-02-05 10:29:43,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6725, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7199, PETRI_PLACES=246, PETRI_TRANSITIONS=392} [2024-02-05 10:29:43,160 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 165 predicate places. [2024-02-05 10:29:43,160 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 392 transitions, 7199 flow [2024-02-05 10:29:43,161 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) [2024-02-05 10:29:43,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:43,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:43,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-02-05 10:29:43,161 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:43,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:43,161 INFO L85 PathProgramCache]: Analyzing trace with hash -666530346, now seen corresponding path program 3 times [2024-02-05 10:29:43,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:43,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656232604] [2024-02-05 10:29:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:43,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:43,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:43,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656232604] [2024-02-05 10:29:43,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656232604] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:43,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:43,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:43,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137360529] [2024-02-05 10:29:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:43,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:43,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:43,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:43,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:43,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:43,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 392 transitions, 7199 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) [2024-02-05 10:29:43,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:43,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:43,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:44,479 INFO L124 PetriNetUnfolderBase]: 3312/6135 cut-off events. [2024-02-05 10:29:44,479 INFO L125 PetriNetUnfolderBase]: For 99891/100261 co-relation queries the response was YES. [2024-02-05 10:29:44,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36119 conditions, 6135 events. 3312/6135 cut-off events. For 99891/100261 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 42420 event pairs, 676 based on Foata normal form. 47/5881 useless extension candidates. Maximal degree in co-relation 36017. Up to 2528 conditions per place. [2024-02-05 10:29:44,547 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 239 selfloop transitions, 182 changer transitions 0/447 dead transitions. [2024-02-05 10:29:44,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 447 transitions, 8457 flow [2024-02-05 10:29:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-02-05 10:29:44,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46567717996289426 [2024-02-05 10:29:44,549 INFO L175 Difference]: Start difference. First operand has 246 places, 392 transitions, 7199 flow. Second operand 7 states and 251 transitions. [2024-02-05 10:29:44,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 447 transitions, 8457 flow [2024-02-05 10:29:44,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 447 transitions, 8308 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:44,775 INFO L231 Difference]: Finished difference. Result has 251 places, 407 transitions, 7705 flow [2024-02-05 10:29:44,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7064, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7705, PETRI_PLACES=251, PETRI_TRANSITIONS=407} [2024-02-05 10:29:44,776 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 170 predicate places. [2024-02-05 10:29:44,776 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 407 transitions, 7705 flow [2024-02-05 10:29:44,776 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) [2024-02-05 10:29:44,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:44,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:44,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-02-05 10:29:44,777 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:44,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash -733750560, now seen corresponding path program 4 times [2024-02-05 10:29:44,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:44,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583349604] [2024-02-05 10:29:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:44,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:44,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:44,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583349604] [2024-02-05 10:29:44,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583349604] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:44,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:44,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:44,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459882961] [2024-02-05 10:29:44,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:44,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:44,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:44,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:44,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:44,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:44,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 407 transitions, 7705 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) [2024-02-05 10:29:44,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:44,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:44,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:46,093 INFO L124 PetriNetUnfolderBase]: 3352/6207 cut-off events. [2024-02-05 10:29:46,094 INFO L125 PetriNetUnfolderBase]: For 107700/108080 co-relation queries the response was YES. [2024-02-05 10:29:46,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37709 conditions, 6207 events. 3352/6207 cut-off events. For 107700/108080 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 43038 event pairs, 695 based on Foata normal form. 39/5945 useless extension candidates. Maximal degree in co-relation 37605. Up to 2552 conditions per place. [2024-02-05 10:29:46,161 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 234 selfloop transitions, 190 changer transitions 0/450 dead transitions. [2024-02-05 10:29:46,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 450 transitions, 8868 flow [2024-02-05 10:29:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-02-05 10:29:46,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582560296846011 [2024-02-05 10:29:46,163 INFO L175 Difference]: Start difference. First operand has 251 places, 407 transitions, 7705 flow. Second operand 7 states and 247 transitions. [2024-02-05 10:29:46,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 450 transitions, 8868 flow [2024-02-05 10:29:46,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 450 transitions, 8529 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-02-05 10:29:46,375 INFO L231 Difference]: Finished difference. Result has 247 places, 414 transitions, 7902 flow [2024-02-05 10:29:46,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7350, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7902, PETRI_PLACES=247, PETRI_TRANSITIONS=414} [2024-02-05 10:29:46,376 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 166 predicate places. [2024-02-05 10:29:46,376 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 414 transitions, 7902 flow [2024-02-05 10:29:46,376 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) [2024-02-05 10:29:46,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:46,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:46,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-02-05 10:29:46,376 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:46,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash 381716293, now seen corresponding path program 3 times [2024-02-05 10:29:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:46,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011863582] [2024-02-05 10:29:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:46,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:46,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:46,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011863582] [2024-02-05 10:29:46,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011863582] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:46,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:46,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:46,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600716634] [2024-02-05 10:29:46,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:46,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:46,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:46,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 414 transitions, 7902 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:46,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:46,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:46,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:47,689 INFO L124 PetriNetUnfolderBase]: 3344/6203 cut-off events. [2024-02-05 10:29:47,689 INFO L125 PetriNetUnfolderBase]: For 112189/112589 co-relation queries the response was YES. [2024-02-05 10:29:47,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38293 conditions, 6203 events. 3344/6203 cut-off events. For 112189/112589 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 42987 event pairs, 804 based on Foata normal form. 78/5986 useless extension candidates. Maximal degree in co-relation 38195. Up to 2564 conditions per place. [2024-02-05 10:29:47,765 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 264 selfloop transitions, 168 changer transitions 0/458 dead transitions. [2024-02-05 10:29:47,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 458 transitions, 9154 flow [2024-02-05 10:29:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:47,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-02-05 10:29:47,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496753246753247 [2024-02-05 10:29:47,766 INFO L175 Difference]: Start difference. First operand has 247 places, 414 transitions, 7902 flow. Second operand 8 states and 277 transitions. [2024-02-05 10:29:47,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 458 transitions, 9154 flow [2024-02-05 10:29:47,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 458 transitions, 8817 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:47,991 INFO L231 Difference]: Finished difference. Result has 250 places, 414 transitions, 7931 flow [2024-02-05 10:29:47,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7581, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7931, PETRI_PLACES=250, PETRI_TRANSITIONS=414} [2024-02-05 10:29:47,991 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 169 predicate places. [2024-02-05 10:29:47,992 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 414 transitions, 7931 flow [2024-02-05 10:29:47,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:47,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:47,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:47,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-02-05 10:29:47,992 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:47,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:47,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1217533021, now seen corresponding path program 4 times [2024-02-05 10:29:47,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:47,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717098649] [2024-02-05 10:29:47,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:47,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:48,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:48,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717098649] [2024-02-05 10:29:48,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717098649] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:48,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:48,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:48,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562050536] [2024-02-05 10:29:48,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:48,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:48,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:48,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:48,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:48,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:48,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 414 transitions, 7931 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:48,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:48,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:48,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:49,299 INFO L124 PetriNetUnfolderBase]: 3368/6243 cut-off events. [2024-02-05 10:29:49,299 INFO L125 PetriNetUnfolderBase]: For 110376/110764 co-relation queries the response was YES. [2024-02-05 10:29:49,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38167 conditions, 6243 events. 3368/6243 cut-off events. For 110376/110764 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 43264 event pairs, 804 based on Foata normal form. 62/6004 useless extension candidates. Maximal degree in co-relation 38069. Up to 2568 conditions per place. [2024-02-05 10:29:49,362 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 268 selfloop transitions, 166 changer transitions 0/460 dead transitions. [2024-02-05 10:29:49,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 460 transitions, 9212 flow [2024-02-05 10:29:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-02-05 10:29:49,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-02-05 10:29:49,364 INFO L175 Difference]: Start difference. First operand has 250 places, 414 transitions, 7931 flow. Second operand 8 states and 275 transitions. [2024-02-05 10:29:49,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 460 transitions, 9212 flow [2024-02-05 10:29:49,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 460 transitions, 8892 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:49,572 INFO L231 Difference]: Finished difference. Result has 251 places, 416 transitions, 7986 flow [2024-02-05 10:29:49,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7617, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7986, PETRI_PLACES=251, PETRI_TRANSITIONS=416} [2024-02-05 10:29:49,573 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 170 predicate places. [2024-02-05 10:29:49,573 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 416 transitions, 7986 flow [2024-02-05 10:29:49,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:49,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:49,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:49,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-02-05 10:29:49,574 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:49,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:49,574 INFO L85 PathProgramCache]: Analyzing trace with hash -468843053, now seen corresponding path program 2 times [2024-02-05 10:29:49,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:49,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162777838] [2024-02-05 10:29:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:49,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:49,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162777838] [2024-02-05 10:29:49,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162777838] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:49,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:49,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:49,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304241111] [2024-02-05 10:29:49,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:49,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:49,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:49,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:49,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 416 transitions, 7986 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:49,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:49,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:49,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:50,924 INFO L124 PetriNetUnfolderBase]: 3486/6437 cut-off events. [2024-02-05 10:29:50,925 INFO L125 PetriNetUnfolderBase]: For 112105/112497 co-relation queries the response was YES. [2024-02-05 10:29:50,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39123 conditions, 6437 events. 3486/6437 cut-off events. For 112105/112497 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 44886 event pairs, 885 based on Foata normal form. 57/6209 useless extension candidates. Maximal degree in co-relation 39025. Up to 3443 conditions per place. [2024-02-05 10:29:50,999 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 275 selfloop transitions, 163 changer transitions 0/464 dead transitions. [2024-02-05 10:29:51,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 464 transitions, 9247 flow [2024-02-05 10:29:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:51,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2024-02-05 10:29:51,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47866419294990725 [2024-02-05 10:29:51,001 INFO L175 Difference]: Start difference. First operand has 251 places, 416 transitions, 7986 flow. Second operand 7 states and 258 transitions. [2024-02-05 10:29:51,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 464 transitions, 9247 flow [2024-02-05 10:29:51,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 464 transitions, 9008 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:51,236 INFO L231 Difference]: Finished difference. Result has 255 places, 423 transitions, 8268 flow [2024-02-05 10:29:51,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7747, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8268, PETRI_PLACES=255, PETRI_TRANSITIONS=423} [2024-02-05 10:29:51,238 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 174 predicate places. [2024-02-05 10:29:51,238 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 423 transitions, 8268 flow [2024-02-05 10:29:51,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:51,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:51,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:51,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-02-05 10:29:51,239 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:51,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash -469495913, now seen corresponding path program 3 times [2024-02-05 10:29:51,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:51,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188484174] [2024-02-05 10:29:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:51,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188484174] [2024-02-05 10:29:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188484174] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:51,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:51,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902608603] [2024-02-05 10:29:51,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:51,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:51,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:51,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:51,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:51,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 423 transitions, 8268 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:51,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:51,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:51,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:52,620 INFO L124 PetriNetUnfolderBase]: 3526/6519 cut-off events. [2024-02-05 10:29:52,620 INFO L125 PetriNetUnfolderBase]: For 119118/119521 co-relation queries the response was YES. [2024-02-05 10:29:52,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40183 conditions, 6519 events. 3526/6519 cut-off events. For 119118/119521 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 45670 event pairs, 871 based on Foata normal form. 57/6291 useless extension candidates. Maximal degree in co-relation 40083. Up to 3467 conditions per place. [2024-02-05 10:29:52,695 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 275 selfloop transitions, 163 changer transitions 0/464 dead transitions. [2024-02-05 10:29:52,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 464 transitions, 9451 flow [2024-02-05 10:29:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-02-05 10:29:52,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46567717996289426 [2024-02-05 10:29:52,696 INFO L175 Difference]: Start difference. First operand has 255 places, 423 transitions, 8268 flow. Second operand 7 states and 251 transitions. [2024-02-05 10:29:52,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 464 transitions, 9451 flow [2024-02-05 10:29:52,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 464 transitions, 9098 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:52,953 INFO L231 Difference]: Finished difference. Result has 257 places, 427 transitions, 8310 flow [2024-02-05 10:29:52,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7927, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8310, PETRI_PLACES=257, PETRI_TRANSITIONS=427} [2024-02-05 10:29:52,954 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 176 predicate places. [2024-02-05 10:29:52,954 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 427 transitions, 8310 flow [2024-02-05 10:29:52,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:52,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:52,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:52,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-02-05 10:29:52,955 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:52,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:52,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1517034031, now seen corresponding path program 5 times [2024-02-05 10:29:52,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:52,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607854852] [2024-02-05 10:29:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:52,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:53,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:53,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607854852] [2024-02-05 10:29:53,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607854852] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:53,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:53,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:53,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200766937] [2024-02-05 10:29:53,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:53,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:53,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:53,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:53,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:29:53,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 427 transitions, 8310 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:53,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:53,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:29:53,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:54,412 INFO L124 PetriNetUnfolderBase]: 3552/6561 cut-off events. [2024-02-05 10:29:54,412 INFO L125 PetriNetUnfolderBase]: For 119144/119547 co-relation queries the response was YES. [2024-02-05 10:29:54,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40318 conditions, 6561 events. 3552/6561 cut-off events. For 119144/119547 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 46090 event pairs, 827 based on Foata normal form. 46/6314 useless extension candidates. Maximal degree in co-relation 40217. Up to 2826 conditions per place. [2024-02-05 10:29:54,488 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 277 selfloop transitions, 171 changer transitions 0/474 dead transitions. [2024-02-05 10:29:54,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 474 transitions, 9615 flow [2024-02-05 10:29:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2024-02-05 10:29:54,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383116883116883 [2024-02-05 10:29:54,489 INFO L175 Difference]: Start difference. First operand has 257 places, 427 transitions, 8310 flow. Second operand 8 states and 270 transitions. [2024-02-05 10:29:54,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 474 transitions, 9615 flow [2024-02-05 10:29:54,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 474 transitions, 9445 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:54,767 INFO L231 Difference]: Finished difference. Result has 263 places, 434 transitions, 8650 flow [2024-02-05 10:29:54,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8140, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8650, PETRI_PLACES=263, PETRI_TRANSITIONS=434} [2024-02-05 10:29:54,768 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 182 predicate places. [2024-02-05 10:29:54,768 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 434 transitions, 8650 flow [2024-02-05 10:29:54,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:54,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:54,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:54,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-02-05 10:29:54,769 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:54,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:54,772 INFO L85 PathProgramCache]: Analyzing trace with hash 318210719, now seen corresponding path program 1 times [2024-02-05 10:29:54,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:54,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951687446] [2024-02-05 10:29:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:54,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:54,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951687446] [2024-02-05 10:29:54,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951687446] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:54,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:54,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:29:54,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949646934] [2024-02-05 10:29:54,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:54,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:29:54,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:54,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:29:54,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:29:54,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:54,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 434 transitions, 8650 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:54,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:54,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:54,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:55,906 INFO L124 PetriNetUnfolderBase]: 2754/5578 cut-off events. [2024-02-05 10:29:55,907 INFO L125 PetriNetUnfolderBase]: For 132067/132913 co-relation queries the response was YES. [2024-02-05 10:29:55,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35840 conditions, 5578 events. 2754/5578 cut-off events. For 132067/132913 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 43227 event pairs, 457 based on Foata normal form. 189/5348 useless extension candidates. Maximal degree in co-relation 35737. Up to 1813 conditions per place. [2024-02-05 10:29:55,979 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 306 selfloop transitions, 108 changer transitions 0/479 dead transitions. [2024-02-05 10:29:55,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 479 transitions, 10030 flow [2024-02-05 10:29:55,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:29:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:29:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-02-05 10:29:55,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461038961038961 [2024-02-05 10:29:55,980 INFO L175 Difference]: Start difference. First operand has 263 places, 434 transitions, 8650 flow. Second operand 4 states and 199 transitions. [2024-02-05 10:29:55,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 479 transitions, 10030 flow [2024-02-05 10:29:56,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 479 transitions, 9697 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:56,197 INFO L231 Difference]: Finished difference. Result has 260 places, 435 transitions, 8690 flow [2024-02-05 10:29:56,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8353, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=8690, PETRI_PLACES=260, PETRI_TRANSITIONS=435} [2024-02-05 10:29:56,198 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 179 predicate places. [2024-02-05 10:29:56,198 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 435 transitions, 8690 flow [2024-02-05 10:29:56,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:56,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:56,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:56,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-02-05 10:29:56,198 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:56,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1082788193, now seen corresponding path program 2 times [2024-02-05 10:29:56,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678129859] [2024-02-05 10:29:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:56,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:56,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:56,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678129859] [2024-02-05 10:29:56,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678129859] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:56,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:56,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:29:56,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630718659] [2024-02-05 10:29:56,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:56,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:29:56,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:56,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:29:56,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:29:56,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:29:56,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 435 transitions, 8690 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:56,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:56,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:29:56,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:56,974 INFO L124 PetriNetUnfolderBase]: 1897/3739 cut-off events. [2024-02-05 10:29:56,975 INFO L125 PetriNetUnfolderBase]: For 118308/118770 co-relation queries the response was YES. [2024-02-05 10:29:57,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28506 conditions, 3739 events. 1897/3739 cut-off events. For 118308/118770 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 27465 event pairs, 409 based on Foata normal form. 165/3639 useless extension candidates. Maximal degree in co-relation 28404. Up to 1494 conditions per place. [2024-02-05 10:29:57,017 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 280 selfloop transitions, 83 changer transitions 1/429 dead transitions. [2024-02-05 10:29:57,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 429 transitions, 9284 flow [2024-02-05 10:29:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-02-05 10:29:57,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574025974025974 [2024-02-05 10:29:57,018 INFO L175 Difference]: Start difference. First operand has 260 places, 435 transitions, 8690 flow. Second operand 5 states and 221 transitions. [2024-02-05 10:29:57,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 429 transitions, 9284 flow [2024-02-05 10:29:57,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 429 transitions, 9126 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:57,319 INFO L231 Difference]: Finished difference. Result has 261 places, 416 transitions, 8572 flow [2024-02-05 10:29:57,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8308, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8572, PETRI_PLACES=261, PETRI_TRANSITIONS=416} [2024-02-05 10:29:57,321 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 180 predicate places. [2024-02-05 10:29:57,321 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 416 transitions, 8572 flow [2024-02-05 10:29:57,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:57,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:57,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:57,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-02-05 10:29:57,321 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:57,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:57,322 INFO L85 PathProgramCache]: Analyzing trace with hash -111418173, now seen corresponding path program 1 times [2024-02-05 10:29:57,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:57,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469321233] [2024-02-05 10:29:57,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:57,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:57,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:57,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469321233] [2024-02-05 10:29:57,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469321233] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:57,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:57,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:57,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413023452] [2024-02-05 10:29:57,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:57,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:57,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:57,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:57,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:57,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:57,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 416 transitions, 8572 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:57,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:57,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:57,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:58,634 INFO L124 PetriNetUnfolderBase]: 2435/4664 cut-off events. [2024-02-05 10:29:58,634 INFO L125 PetriNetUnfolderBase]: For 130906/131457 co-relation queries the response was YES. [2024-02-05 10:29:58,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34284 conditions, 4664 events. 2435/4664 cut-off events. For 130906/131457 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 33798 event pairs, 298 based on Foata normal form. 107/4621 useless extension candidates. Maximal degree in co-relation 34182. Up to 1693 conditions per place. [2024-02-05 10:29:58,678 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 347 selfloop transitions, 132 changer transitions 2/528 dead transitions. [2024-02-05 10:29:58,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 528 transitions, 10776 flow [2024-02-05 10:29:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 302 transitions. [2024-02-05 10:29:58,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4902597402597403 [2024-02-05 10:29:58,680 INFO L175 Difference]: Start difference. First operand has 261 places, 416 transitions, 8572 flow. Second operand 8 states and 302 transitions. [2024-02-05 10:29:58,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 528 transitions, 10776 flow [2024-02-05 10:29:59,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 528 transitions, 10525 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:59,073 INFO L231 Difference]: Finished difference. Result has 266 places, 440 transitions, 9115 flow [2024-02-05 10:29:59,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8400, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9115, PETRI_PLACES=266, PETRI_TRANSITIONS=440} [2024-02-05 10:29:59,074 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 185 predicate places. [2024-02-05 10:29:59,074 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 440 transitions, 9115 flow [2024-02-05 10:29:59,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:59,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:59,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:59,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-02-05 10:29:59,075 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:29:59,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:59,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1563311618, now seen corresponding path program 1 times [2024-02-05 10:29:59,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100789566] [2024-02-05 10:29:59,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:59,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:59,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:59,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100789566] [2024-02-05 10:29:59,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100789566] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:59,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:59,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:59,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453779487] [2024-02-05 10:29:59,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:59,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:59,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:59,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:29:59,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 440 transitions, 9115 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:59,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:59,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:29:59,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:00,257 INFO L124 PetriNetUnfolderBase]: 2450/4708 cut-off events. [2024-02-05 10:30:00,258 INFO L125 PetriNetUnfolderBase]: For 134567/135097 co-relation queries the response was YES. [2024-02-05 10:30:00,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35205 conditions, 4708 events. 2450/4708 cut-off events. For 134567/135097 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 34077 event pairs, 508 based on Foata normal form. 72/4628 useless extension candidates. Maximal degree in co-relation 35102. Up to 3770 conditions per place. [2024-02-05 10:30:00,313 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 371 selfloop transitions, 45 changer transitions 0/463 dead transitions. [2024-02-05 10:30:00,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 463 transitions, 10110 flow [2024-02-05 10:30:00,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:00,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:00,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-02-05 10:30:00,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322820037105751 [2024-02-05 10:30:00,314 INFO L175 Difference]: Start difference. First operand has 266 places, 440 transitions, 9115 flow. Second operand 7 states and 233 transitions. [2024-02-05 10:30:00,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 463 transitions, 10110 flow [2024-02-05 10:30:00,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 463 transitions, 9907 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-02-05 10:30:00,736 INFO L231 Difference]: Finished difference. Result has 269 places, 444 transitions, 9068 flow [2024-02-05 10:30:00,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8915, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9068, PETRI_PLACES=269, PETRI_TRANSITIONS=444} [2024-02-05 10:30:00,737 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 188 predicate places. [2024-02-05 10:30:00,737 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 444 transitions, 9068 flow [2024-02-05 10:30:00,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:00,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:00,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:00,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-02-05 10:30:00,738 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:00,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1086155980, now seen corresponding path program 2 times [2024-02-05 10:30:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:00,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474182961] [2024-02-05 10:30:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:00,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:00,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:00,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474182961] [2024-02-05 10:30:00,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474182961] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:00,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:00,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:00,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463522577] [2024-02-05 10:30:00,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:00,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:00,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:00,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:00,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:00,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:00,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 444 transitions, 9068 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:00,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:00,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:00,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:01,928 INFO L124 PetriNetUnfolderBase]: 2490/4764 cut-off events. [2024-02-05 10:30:01,929 INFO L125 PetriNetUnfolderBase]: For 131764/132303 co-relation queries the response was YES. [2024-02-05 10:30:02,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34753 conditions, 4764 events. 2490/4764 cut-off events. For 131764/132303 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 34445 event pairs, 500 based on Foata normal form. 78/4684 useless extension candidates. Maximal degree in co-relation 34649. Up to 3825 conditions per place. [2024-02-05 10:30:02,131 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 368 selfloop transitions, 50 changer transitions 0/465 dead transitions. [2024-02-05 10:30:02,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 465 transitions, 10012 flow [2024-02-05 10:30:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-02-05 10:30:02,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322820037105751 [2024-02-05 10:30:02,133 INFO L175 Difference]: Start difference. First operand has 269 places, 444 transitions, 9068 flow. Second operand 7 states and 233 transitions. [2024-02-05 10:30:02,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 465 transitions, 10012 flow [2024-02-05 10:30:02,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 465 transitions, 9945 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-02-05 10:30:02,546 INFO L231 Difference]: Finished difference. Result has 272 places, 445 transitions, 9121 flow [2024-02-05 10:30:02,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9006, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9121, PETRI_PLACES=272, PETRI_TRANSITIONS=445} [2024-02-05 10:30:02,547 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 191 predicate places. [2024-02-05 10:30:02,547 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 445 transitions, 9121 flow [2024-02-05 10:30:02,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:02,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:02,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:02,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-02-05 10:30:02,548 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:02,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:02,549 INFO L85 PathProgramCache]: Analyzing trace with hash -308120678, now seen corresponding path program 3 times [2024-02-05 10:30:02,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:02,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962243289] [2024-02-05 10:30:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:02,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:02,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:02,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962243289] [2024-02-05 10:30:02,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962243289] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:02,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:02,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:02,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184570460] [2024-02-05 10:30:02,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:02,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:02,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:02,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:02,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:02,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:02,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 445 transitions, 9121 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:02,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:02,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:02,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:03,730 INFO L124 PetriNetUnfolderBase]: 2488/4758 cut-off events. [2024-02-05 10:30:03,730 INFO L125 PetriNetUnfolderBase]: For 132849/133388 co-relation queries the response was YES. [2024-02-05 10:30:03,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34719 conditions, 4758 events. 2488/4758 cut-off events. For 132849/133388 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 34405 event pairs, 500 based on Foata normal form. 78/4678 useless extension candidates. Maximal degree in co-relation 34616. Up to 3825 conditions per place. [2024-02-05 10:30:03,789 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 364 selfloop transitions, 54 changer transitions 0/465 dead transitions. [2024-02-05 10:30:03,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 465 transitions, 10038 flow [2024-02-05 10:30:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-02-05 10:30:03,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322820037105751 [2024-02-05 10:30:03,791 INFO L175 Difference]: Start difference. First operand has 272 places, 445 transitions, 9121 flow. Second operand 7 states and 233 transitions. [2024-02-05 10:30:03,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 465 transitions, 10038 flow [2024-02-05 10:30:04,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 465 transitions, 9945 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-02-05 10:30:04,263 INFO L231 Difference]: Finished difference. Result has 273 places, 445 transitions, 9142 flow [2024-02-05 10:30:04,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9028, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9142, PETRI_PLACES=273, PETRI_TRANSITIONS=445} [2024-02-05 10:30:04,264 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 192 predicate places. [2024-02-05 10:30:04,264 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 445 transitions, 9142 flow [2024-02-05 10:30:04,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:04,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:04,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:04,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-02-05 10:30:04,265 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:04,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1416480202, now seen corresponding path program 1 times [2024-02-05 10:30:04,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:04,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372783614] [2024-02-05 10:30:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:04,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:04,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372783614] [2024-02-05 10:30:04,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372783614] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:04,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:04,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:30:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995224024] [2024-02-05 10:30:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:04,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:30:04,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:04,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:30:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:30:04,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:30:04,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 445 transitions, 9142 flow. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:04,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:04,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:30:04,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:05,274 INFO L124 PetriNetUnfolderBase]: 1929/3910 cut-off events. [2024-02-05 10:30:05,275 INFO L125 PetriNetUnfolderBase]: For 124523/124963 co-relation queries the response was YES. [2024-02-05 10:30:05,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29407 conditions, 3910 events. 1929/3910 cut-off events. For 124523/124963 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29602 event pairs, 343 based on Foata normal form. 54/3784 useless extension candidates. Maximal degree in co-relation 29307. Up to 1327 conditions per place. [2024-02-05 10:30:05,317 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 331 selfloop transitions, 116 changer transitions 2/514 dead transitions. [2024-02-05 10:30:05,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 514 transitions, 10793 flow [2024-02-05 10:30:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:30:05,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:30:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2024-02-05 10:30:05,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6038961038961039 [2024-02-05 10:30:05,318 INFO L175 Difference]: Start difference. First operand has 273 places, 445 transitions, 9142 flow. Second operand 6 states and 279 transitions. [2024-02-05 10:30:05,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 514 transitions, 10793 flow [2024-02-05 10:30:05,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 514 transitions, 10704 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-02-05 10:30:05,654 INFO L231 Difference]: Finished difference. Result has 275 places, 457 transitions, 9486 flow [2024-02-05 10:30:05,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9053, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9486, PETRI_PLACES=275, PETRI_TRANSITIONS=457} [2024-02-05 10:30:05,654 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 194 predicate places. [2024-02-05 10:30:05,655 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 457 transitions, 9486 flow [2024-02-05 10:30:05,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:05,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:05,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:05,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-02-05 10:30:05,655 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:05,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:05,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2049721134, now seen corresponding path program 2 times [2024-02-05 10:30:05,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:05,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535728041] [2024-02-05 10:30:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:05,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:05,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:05,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535728041] [2024-02-05 10:30:05,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535728041] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:05,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:05,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:30:05,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404711640] [2024-02-05 10:30:05,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:05,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:05,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:05,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:05,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:05,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:30:05,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 457 transitions, 9486 flow. Second operand has 8 states, 8 states have (on average 34.625) internal successors, (277), 8 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:05,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:05,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:30:05,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:06,703 INFO L124 PetriNetUnfolderBase]: 1917/3932 cut-off events. [2024-02-05 10:30:06,704 INFO L125 PetriNetUnfolderBase]: For 127796/128229 co-relation queries the response was YES. [2024-02-05 10:30:06,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30036 conditions, 3932 events. 1917/3932 cut-off events. For 127796/128229 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29794 event pairs, 325 based on Foata normal form. 42/3844 useless extension candidates. Maximal degree in co-relation 29936. Up to 2863 conditions per place. [2024-02-05 10:30:06,750 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 356 selfloop transitions, 59 changer transitions 0/480 dead transitions. [2024-02-05 10:30:06,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 480 transitions, 10442 flow [2024-02-05 10:30:06,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:06,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 333 transitions. [2024-02-05 10:30:06,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405844155844156 [2024-02-05 10:30:06,752 INFO L175 Difference]: Start difference. First operand has 275 places, 457 transitions, 9486 flow. Second operand 8 states and 333 transitions. [2024-02-05 10:30:06,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 480 transitions, 10442 flow [2024-02-05 10:30:07,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 480 transitions, 10360 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-02-05 10:30:07,120 INFO L231 Difference]: Finished difference. Result has 282 places, 457 transitions, 9530 flow [2024-02-05 10:30:07,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9404, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9530, PETRI_PLACES=282, PETRI_TRANSITIONS=457} [2024-02-05 10:30:07,121 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 201 predicate places. [2024-02-05 10:30:07,121 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 457 transitions, 9530 flow [2024-02-05 10:30:07,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.625) internal successors, (277), 8 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:07,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:07,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:07,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-02-05 10:30:07,122 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:07,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:07,122 INFO L85 PathProgramCache]: Analyzing trace with hash -330970449, now seen corresponding path program 1 times [2024-02-05 10:30:07,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:07,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500126132] [2024-02-05 10:30:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:07,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:07,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:07,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500126132] [2024-02-05 10:30:07,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500126132] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:07,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:07,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:07,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871530752] [2024-02-05 10:30:07,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:07,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:07,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:07,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:07,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:07,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:30:07,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 457 transitions, 9530 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:07,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:07,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:30:07,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:08,517 INFO L124 PetriNetUnfolderBase]: 2665/4867 cut-off events. [2024-02-05 10:30:08,518 INFO L125 PetriNetUnfolderBase]: For 131735/132148 co-relation queries the response was YES. [2024-02-05 10:30:08,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35921 conditions, 4867 events. 2665/4867 cut-off events. For 131735/132148 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33697 event pairs, 418 based on Foata normal form. 41/4755 useless extension candidates. Maximal degree in co-relation 35818. Up to 2325 conditions per place. [2024-02-05 10:30:08,575 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 352 selfloop transitions, 135 changer transitions 0/513 dead transitions. [2024-02-05 10:30:08,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 513 transitions, 11089 flow [2024-02-05 10:30:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2024-02-05 10:30:08,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43344155844155846 [2024-02-05 10:30:08,576 INFO L175 Difference]: Start difference. First operand has 282 places, 457 transitions, 9530 flow. Second operand 8 states and 267 transitions. [2024-02-05 10:30:08,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 513 transitions, 11089 flow [2024-02-05 10:30:09,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 513 transitions, 10982 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-02-05 10:30:09,068 INFO L231 Difference]: Finished difference. Result has 285 places, 458 transitions, 9715 flow [2024-02-05 10:30:09,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9423, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9715, PETRI_PLACES=285, PETRI_TRANSITIONS=458} [2024-02-05 10:30:09,069 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 204 predicate places. [2024-02-05 10:30:09,069 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 458 transitions, 9715 flow [2024-02-05 10:30:09,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:09,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:09,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:09,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-02-05 10:30:09,070 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:09,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:09,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1301449848, now seen corresponding path program 4 times [2024-02-05 10:30:09,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:09,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908098212] [2024-02-05 10:30:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:09,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:09,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908098212] [2024-02-05 10:30:09,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908098212] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:09,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:09,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:09,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031329976] [2024-02-05 10:30:09,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:09,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:09,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:09,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:09,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:09,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:09,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 458 transitions, 9715 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:09,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:09,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:09,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:10,348 INFO L124 PetriNetUnfolderBase]: 2461/4713 cut-off events. [2024-02-05 10:30:10,349 INFO L125 PetriNetUnfolderBase]: For 146141/146735 co-relation queries the response was YES. [2024-02-05 10:30:10,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35573 conditions, 4713 events. 2461/4713 cut-off events. For 146141/146735 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 34271 event pairs, 547 based on Foata normal form. 75/4632 useless extension candidates. Maximal degree in co-relation 35469. Up to 3801 conditions per place. [2024-02-05 10:30:10,399 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 383 selfloop transitions, 43 changer transitions 0/473 dead transitions. [2024-02-05 10:30:10,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 473 transitions, 10659 flow [2024-02-05 10:30:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-02-05 10:30:10,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424860853432282 [2024-02-05 10:30:10,401 INFO L175 Difference]: Start difference. First operand has 285 places, 458 transitions, 9715 flow. Second operand 7 states and 229 transitions. [2024-02-05 10:30:10,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 473 transitions, 10659 flow [2024-02-05 10:30:10,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 473 transitions, 10358 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-02-05 10:30:10,803 INFO L231 Difference]: Finished difference. Result has 278 places, 457 transitions, 9484 flow [2024-02-05 10:30:10,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9398, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9484, PETRI_PLACES=278, PETRI_TRANSITIONS=457} [2024-02-05 10:30:10,803 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 197 predicate places. [2024-02-05 10:30:10,803 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 457 transitions, 9484 flow [2024-02-05 10:30:10,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:10,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:10,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:10,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-02-05 10:30:10,804 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:10,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:10,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1809430045, now seen corresponding path program 2 times [2024-02-05 10:30:10,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:10,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952361308] [2024-02-05 10:30:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:10,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:11,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:11,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952361308] [2024-02-05 10:30:11,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952361308] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:11,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:11,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301268541] [2024-02-05 10:30:11,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:11,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:11,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:30:11,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 457 transitions, 9484 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:11,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:11,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:30:11,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:12,121 INFO L124 PetriNetUnfolderBase]: 2659/4849 cut-off events. [2024-02-05 10:30:12,121 INFO L125 PetriNetUnfolderBase]: For 131097/131506 co-relation queries the response was YES. [2024-02-05 10:30:12,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35633 conditions, 4849 events. 2659/4849 cut-off events. For 131097/131506 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33482 event pairs, 413 based on Foata normal form. 29/4721 useless extension candidates. Maximal degree in co-relation 35536. Up to 2319 conditions per place. [2024-02-05 10:30:12,170 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 347 selfloop transitions, 136 changer transitions 0/509 dead transitions. [2024-02-05 10:30:12,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 509 transitions, 10984 flow [2024-02-05 10:30:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2024-02-05 10:30:12,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237012987012987 [2024-02-05 10:30:12,172 INFO L175 Difference]: Start difference. First operand has 278 places, 457 transitions, 9484 flow. Second operand 8 states and 261 transitions. [2024-02-05 10:30:12,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 509 transitions, 10984 flow [2024-02-05 10:30:12,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 509 transitions, 10871 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:30:12,593 INFO L231 Difference]: Finished difference. Result has 281 places, 457 transitions, 9651 flow [2024-02-05 10:30:12,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9371, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9651, PETRI_PLACES=281, PETRI_TRANSITIONS=457} [2024-02-05 10:30:12,594 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 200 predicate places. [2024-02-05 10:30:12,594 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 457 transitions, 9651 flow [2024-02-05 10:30:12,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:12,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:12,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:12,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-02-05 10:30:12,594 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:12,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:12,595 INFO L85 PathProgramCache]: Analyzing trace with hash 215600613, now seen corresponding path program 2 times [2024-02-05 10:30:12,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:12,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340093291] [2024-02-05 10:30:12,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:12,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:12,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340093291] [2024-02-05 10:30:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340093291] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:12,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:12,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:12,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19205203] [2024-02-05 10:30:12,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:12,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:12,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:12,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:12,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:12,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 457 transitions, 9651 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:12,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:12,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:12,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:13,899 INFO L124 PetriNetUnfolderBase]: 2569/4906 cut-off events. [2024-02-05 10:30:13,899 INFO L125 PetriNetUnfolderBase]: For 148458/149052 co-relation queries the response was YES. [2024-02-05 10:30:13,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36541 conditions, 4906 events. 2569/4906 cut-off events. For 148458/149052 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 35523 event pairs, 508 based on Foata normal form. 76/4815 useless extension candidates. Maximal degree in co-relation 36443. Up to 1759 conditions per place. [2024-02-05 10:30:13,954 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 360 selfloop transitions, 150 changer transitions 2/559 dead transitions. [2024-02-05 10:30:13,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 559 transitions, 11696 flow [2024-02-05 10:30:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 301 transitions. [2024-02-05 10:30:13,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-02-05 10:30:13,956 INFO L175 Difference]: Start difference. First operand has 281 places, 457 transitions, 9651 flow. Second operand 8 states and 301 transitions. [2024-02-05 10:30:13,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 559 transitions, 11696 flow [2024-02-05 10:30:14,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 559 transitions, 11391 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-05 10:30:14,406 INFO L231 Difference]: Finished difference. Result has 283 places, 484 transitions, 10005 flow [2024-02-05 10:30:14,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9354, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10005, PETRI_PLACES=283, PETRI_TRANSITIONS=484} [2024-02-05 10:30:14,407 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 202 predicate places. [2024-02-05 10:30:14,407 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 484 transitions, 10005 flow [2024-02-05 10:30:14,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:14,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:14,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:14,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-02-05 10:30:14,408 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:14,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1274343609, now seen corresponding path program 3 times [2024-02-05 10:30:14,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:14,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370813946] [2024-02-05 10:30:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:14,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:14,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370813946] [2024-02-05 10:30:14,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370813946] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:14,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:14,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:14,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287659236] [2024-02-05 10:30:14,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:14,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:14,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:14,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:14,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:14,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:14,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 484 transitions, 10005 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:14,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:14,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:14,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:16,026 INFO L124 PetriNetUnfolderBase]: 2600/4977 cut-off events. [2024-02-05 10:30:16,027 INFO L125 PetriNetUnfolderBase]: For 148788/149401 co-relation queries the response was YES. [2024-02-05 10:30:16,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38441 conditions, 4977 events. 2600/4977 cut-off events. For 148788/149401 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 36211 event pairs, 513 based on Foata normal form. 76/4886 useless extension candidates. Maximal degree in co-relation 38341. Up to 1772 conditions per place. [2024-02-05 10:30:16,094 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 349 selfloop transitions, 178 changer transitions 2/576 dead transitions. [2024-02-05 10:30:16,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 576 transitions, 12120 flow [2024-02-05 10:30:16,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 309 transitions. [2024-02-05 10:30:16,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016233766233766 [2024-02-05 10:30:16,095 INFO L175 Difference]: Start difference. First operand has 283 places, 484 transitions, 10005 flow. Second operand 8 states and 309 transitions. [2024-02-05 10:30:16,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 576 transitions, 12120 flow [2024-02-05 10:30:16,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 576 transitions, 11947 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-02-05 10:30:16,722 INFO L231 Difference]: Finished difference. Result has 290 places, 502 transitions, 10518 flow [2024-02-05 10:30:16,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9839, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10518, PETRI_PLACES=290, PETRI_TRANSITIONS=502} [2024-02-05 10:30:16,723 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 209 predicate places. [2024-02-05 10:30:16,723 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 502 transitions, 10518 flow [2024-02-05 10:30:16,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:16,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:16,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:16,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-02-05 10:30:16,724 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:16,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1274103669, now seen corresponding path program 4 times [2024-02-05 10:30:16,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:16,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512705191] [2024-02-05 10:30:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:16,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:16,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:16,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512705191] [2024-02-05 10:30:16,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512705191] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:16,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:16,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:16,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166257301] [2024-02-05 10:30:16,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:16,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:16,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:16,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:16,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:16,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:16,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 502 transitions, 10518 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:16,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:16,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:16,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:18,554 INFO L124 PetriNetUnfolderBase]: 2636/5045 cut-off events. [2024-02-05 10:30:18,554 INFO L125 PetriNetUnfolderBase]: For 155628/156242 co-relation queries the response was YES. [2024-02-05 10:30:18,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40038 conditions, 5045 events. 2636/5045 cut-off events. For 155628/156242 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 36704 event pairs, 516 based on Foata normal form. 76/4954 useless extension candidates. Maximal degree in co-relation 39936. Up to 1784 conditions per place. [2024-02-05 10:30:18,632 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 350 selfloop transitions, 189 changer transitions 2/588 dead transitions. [2024-02-05 10:30:18,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 588 transitions, 12611 flow [2024-02-05 10:30:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 317 transitions. [2024-02-05 10:30:18,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146103896103896 [2024-02-05 10:30:18,634 INFO L175 Difference]: Start difference. First operand has 290 places, 502 transitions, 10518 flow. Second operand 8 states and 317 transitions. [2024-02-05 10:30:18,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 588 transitions, 12611 flow [2024-02-05 10:30:19,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 588 transitions, 12330 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-05 10:30:19,246 INFO L231 Difference]: Finished difference. Result has 293 places, 508 transitions, 10766 flow [2024-02-05 10:30:19,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10247, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10766, PETRI_PLACES=293, PETRI_TRANSITIONS=508} [2024-02-05 10:30:19,247 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 212 predicate places. [2024-02-05 10:30:19,247 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 508 transitions, 10766 flow [2024-02-05 10:30:19,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:19,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:19,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:19,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-02-05 10:30:19,248 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:19,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:19,248 INFO L85 PathProgramCache]: Analyzing trace with hash 218308421, now seen corresponding path program 5 times [2024-02-05 10:30:19,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:19,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310722156] [2024-02-05 10:30:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:19,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:19,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:19,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310722156] [2024-02-05 10:30:19,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310722156] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:19,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:19,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:19,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986992809] [2024-02-05 10:30:19,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:19,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:19,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:19,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:19,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:19,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 508 transitions, 10766 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:19,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:19,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:19,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:20,608 INFO L124 PetriNetUnfolderBase]: 2705/5148 cut-off events. [2024-02-05 10:30:20,608 INFO L125 PetriNetUnfolderBase]: For 160282/160914 co-relation queries the response was YES. [2024-02-05 10:30:20,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41089 conditions, 5148 events. 2705/5148 cut-off events. For 160282/160914 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 37396 event pairs, 497 based on Foata normal form. 80/5057 useless extension candidates. Maximal degree in co-relation 40986. Up to 1811 conditions per place. [2024-02-05 10:30:20,673 INFO L140 encePairwiseOnDemand]: 63/77 looper letters, 360 selfloop transitions, 176 changer transitions 2/585 dead transitions. [2024-02-05 10:30:20,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 585 transitions, 12644 flow [2024-02-05 10:30:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:20,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 276 transitions. [2024-02-05 10:30:20,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120593692022264 [2024-02-05 10:30:20,674 INFO L175 Difference]: Start difference. First operand has 293 places, 508 transitions, 10766 flow. Second operand 7 states and 276 transitions. [2024-02-05 10:30:20,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 585 transitions, 12644 flow [2024-02-05 10:30:21,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 585 transitions, 12355 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-02-05 10:30:21,256 INFO L231 Difference]: Finished difference. Result has 298 places, 520 transitions, 11119 flow [2024-02-05 10:30:21,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10485, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11119, PETRI_PLACES=298, PETRI_TRANSITIONS=520} [2024-02-05 10:30:21,257 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 217 predicate places. [2024-02-05 10:30:21,257 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 520 transitions, 11119 flow [2024-02-05 10:30:21,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:21,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:21,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:21,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-02-05 10:30:21,258 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:21,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2016546867, now seen corresponding path program 3 times [2024-02-05 10:30:21,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:21,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603982183] [2024-02-05 10:30:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:21,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:21,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:21,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603982183] [2024-02-05 10:30:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603982183] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:21,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:21,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:21,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015409176] [2024-02-05 10:30:21,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:21,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:21,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:21,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:21,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:21,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:30:21,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 520 transitions, 11119 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:21,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:21,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:30:21,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:22,909 INFO L124 PetriNetUnfolderBase]: 2893/5293 cut-off events. [2024-02-05 10:30:22,909 INFO L125 PetriNetUnfolderBase]: For 164745/165288 co-relation queries the response was YES. [2024-02-05 10:30:22,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43655 conditions, 5293 events. 2893/5293 cut-off events. For 164745/165288 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 36907 event pairs, 393 based on Foata normal form. 91/5228 useless extension candidates. Maximal degree in co-relation 43549. Up to 2654 conditions per place. [2024-02-05 10:30:22,972 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 346 selfloop transitions, 166 changer transitions 0/549 dead transitions. [2024-02-05 10:30:22,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 549 transitions, 12432 flow [2024-02-05 10:30:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-02-05 10:30:22,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322820037105751 [2024-02-05 10:30:22,974 INFO L175 Difference]: Start difference. First operand has 298 places, 520 transitions, 11119 flow. Second operand 7 states and 233 transitions. [2024-02-05 10:30:22,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 549 transitions, 12432 flow [2024-02-05 10:30:23,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 549 transitions, 12217 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-02-05 10:30:23,550 INFO L231 Difference]: Finished difference. Result has 301 places, 521 transitions, 11267 flow [2024-02-05 10:30:23,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10904, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11267, PETRI_PLACES=301, PETRI_TRANSITIONS=521} [2024-02-05 10:30:23,551 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 220 predicate places. [2024-02-05 10:30:23,551 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 521 transitions, 11267 flow [2024-02-05 10:30:23,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:23,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:23,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:23,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-02-05 10:30:23,552 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:23,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash 860634097, now seen corresponding path program 4 times [2024-02-05 10:30:23,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:23,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166155298] [2024-02-05 10:30:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:23,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:23,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:23,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166155298] [2024-02-05 10:30:23,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166155298] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:23,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:23,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:23,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994150144] [2024-02-05 10:30:23,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:23,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:23,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:23,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:23,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:23,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:30:23,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 521 transitions, 11267 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:23,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:23,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:30:23,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:25,036 INFO L124 PetriNetUnfolderBase]: 2903/5319 cut-off events. [2024-02-05 10:30:25,036 INFO L125 PetriNetUnfolderBase]: For 171285/171800 co-relation queries the response was YES. [2024-02-05 10:30:25,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43641 conditions, 5319 events. 2903/5319 cut-off events. For 171285/171800 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 37181 event pairs, 402 based on Foata normal form. 59/5214 useless extension candidates. Maximal degree in co-relation 43535. Up to 2666 conditions per place. [2024-02-05 10:30:25,098 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 354 selfloop transitions, 161 changer transitions 0/552 dead transitions. [2024-02-05 10:30:25,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 552 transitions, 12624 flow [2024-02-05 10:30:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:25,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-02-05 10:30:25,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-05 10:30:25,099 INFO L175 Difference]: Start difference. First operand has 301 places, 521 transitions, 11267 flow. Second operand 7 states and 231 transitions. [2024-02-05 10:30:25,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 552 transitions, 12624 flow [2024-02-05 10:30:25,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 552 transitions, 12260 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-02-05 10:30:25,694 INFO L231 Difference]: Finished difference. Result has 301 places, 522 transitions, 11247 flow [2024-02-05 10:30:25,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10905, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11247, PETRI_PLACES=301, PETRI_TRANSITIONS=522} [2024-02-05 10:30:25,695 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 220 predicate places. [2024-02-05 10:30:25,695 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 522 transitions, 11247 flow [2024-02-05 10:30:25,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:25,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:25,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:25,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-02-05 10:30:25,696 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:25,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash 561133087, now seen corresponding path program 5 times [2024-02-05 10:30:25,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:25,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135723866] [2024-02-05 10:30:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:25,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:25,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:25,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135723866] [2024-02-05 10:30:25,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135723866] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:25,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:25,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:25,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690212804] [2024-02-05 10:30:25,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:25,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:25,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:25,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:25,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:30:25,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 522 transitions, 11247 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:25,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:25,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:30:25,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:27,088 INFO L124 PetriNetUnfolderBase]: 2907/5339 cut-off events. [2024-02-05 10:30:27,089 INFO L125 PetriNetUnfolderBase]: For 169355/169862 co-relation queries the response was YES. [2024-02-05 10:30:27,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43643 conditions, 5339 events. 2907/5339 cut-off events. For 169355/169862 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 37485 event pairs, 363 based on Foata normal form. 43/5220 useless extension candidates. Maximal degree in co-relation 43538. Up to 2663 conditions per place. [2024-02-05 10:30:27,152 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 347 selfloop transitions, 167 changer transitions 0/551 dead transitions. [2024-02-05 10:30:27,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 551 transitions, 12546 flow [2024-02-05 10:30:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:27,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-02-05 10:30:27,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41929499072356213 [2024-02-05 10:30:27,153 INFO L175 Difference]: Start difference. First operand has 301 places, 522 transitions, 11247 flow. Second operand 7 states and 226 transitions. [2024-02-05 10:30:27,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 551 transitions, 12546 flow [2024-02-05 10:30:27,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 551 transitions, 12139 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-02-05 10:30:27,710 INFO L231 Difference]: Finished difference. Result has 294 places, 525 transitions, 11285 flow [2024-02-05 10:30:27,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11285, PETRI_PLACES=294, PETRI_TRANSITIONS=525} [2024-02-05 10:30:27,710 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 213 predicate places. [2024-02-05 10:30:27,710 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 525 transitions, 11285 flow [2024-02-05 10:30:27,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:27,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:27,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:27,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-02-05 10:30:27,711 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:27,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1473998489, now seen corresponding path program 1 times [2024-02-05 10:30:27,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:27,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547616218] [2024-02-05 10:30:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:27,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:27,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:27,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547616218] [2024-02-05 10:30:27,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547616218] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:27,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:27,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:27,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575253929] [2024-02-05 10:30:27,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:27,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:27,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:27,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:27,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:27,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:27,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 525 transitions, 11285 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:27,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:27,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:27,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:29,113 INFO L124 PetriNetUnfolderBase]: 2699/5255 cut-off events. [2024-02-05 10:30:29,113 INFO L125 PetriNetUnfolderBase]: For 175834/176616 co-relation queries the response was YES. [2024-02-05 10:30:29,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42722 conditions, 5255 events. 2699/5255 cut-off events. For 175834/176616 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39300 event pairs, 537 based on Foata normal form. 91/5188 useless extension candidates. Maximal degree in co-relation 42624. Up to 2570 conditions per place. [2024-02-05 10:30:29,181 INFO L140 encePairwiseOnDemand]: 63/77 looper letters, 370 selfloop transitions, 149 changer transitions 4/572 dead transitions. [2024-02-05 10:30:29,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 572 transitions, 12785 flow [2024-02-05 10:30:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2024-02-05 10:30:29,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-02-05 10:30:29,182 INFO L175 Difference]: Start difference. First operand has 294 places, 525 transitions, 11285 flow. Second operand 8 states and 284 transitions. [2024-02-05 10:30:29,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 572 transitions, 12785 flow [2024-02-05 10:30:29,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 572 transitions, 12508 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-02-05 10:30:29,663 INFO L231 Difference]: Finished difference. Result has 299 places, 526 transitions, 11425 flow [2024-02-05 10:30:29,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11008, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11425, PETRI_PLACES=299, PETRI_TRANSITIONS=526} [2024-02-05 10:30:29,663 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 218 predicate places. [2024-02-05 10:30:29,664 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 526 transitions, 11425 flow [2024-02-05 10:30:29,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:29,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:29,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:29,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-02-05 10:30:29,664 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:29,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:29,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1751570075, now seen corresponding path program 2 times [2024-02-05 10:30:29,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:29,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460425318] [2024-02-05 10:30:29,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:29,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:29,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:29,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460425318] [2024-02-05 10:30:29,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460425318] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:29,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:29,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:29,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225292557] [2024-02-05 10:30:29,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:29,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:29,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:29,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:29,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:29,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:29,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 526 transitions, 11425 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:29,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:29,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:29,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:31,092 INFO L124 PetriNetUnfolderBase]: 2749/5374 cut-off events. [2024-02-05 10:30:31,093 INFO L125 PetriNetUnfolderBase]: For 178592/179503 co-relation queries the response was YES. [2024-02-05 10:30:31,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43793 conditions, 5374 events. 2749/5374 cut-off events. For 178592/179503 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 40289 event pairs, 683 based on Foata normal form. 86/5292 useless extension candidates. Maximal degree in co-relation 43693. Up to 2271 conditions per place. [2024-02-05 10:30:31,148 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 379 selfloop transitions, 150 changer transitions 4/582 dead transitions. [2024-02-05 10:30:31,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 582 transitions, 13100 flow [2024-02-05 10:30:31,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2024-02-05 10:30:31,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-02-05 10:30:31,151 INFO L175 Difference]: Start difference. First operand has 299 places, 526 transitions, 11425 flow. Second operand 8 states and 286 transitions. [2024-02-05 10:30:31,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 582 transitions, 13100 flow [2024-02-05 10:30:31,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 582 transitions, 12886 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-02-05 10:30:31,674 INFO L231 Difference]: Finished difference. Result has 303 places, 531 transitions, 11686 flow [2024-02-05 10:30:31,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11232, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11686, PETRI_PLACES=303, PETRI_TRANSITIONS=531} [2024-02-05 10:30:31,675 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 222 predicate places. [2024-02-05 10:30:31,675 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 531 transitions, 11686 flow [2024-02-05 10:30:31,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:31,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:31,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:31,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-02-05 10:30:31,676 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:31,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:31,676 INFO L85 PathProgramCache]: Analyzing trace with hash 711091377, now seen corresponding path program 3 times [2024-02-05 10:30:31,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:31,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447969613] [2024-02-05 10:30:31,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:31,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:31,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:31,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447969613] [2024-02-05 10:30:31,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447969613] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:31,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:31,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:31,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873513590] [2024-02-05 10:30:31,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:31,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:31,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:31,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:31,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:31,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:31,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 531 transitions, 11686 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:31,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:31,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:31,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:33,197 INFO L124 PetriNetUnfolderBase]: 2741/5407 cut-off events. [2024-02-05 10:30:33,198 INFO L125 PetriNetUnfolderBase]: For 181602/182539 co-relation queries the response was YES. [2024-02-05 10:30:33,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45475 conditions, 5407 events. 2741/5407 cut-off events. For 181602/182539 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 40961 event pairs, 689 based on Foata normal form. 82/5318 useless extension candidates. Maximal degree in co-relation 45373. Up to 2279 conditions per place. [2024-02-05 10:30:33,268 INFO L140 encePairwiseOnDemand]: 58/77 looper letters, 335 selfloop transitions, 206 changer transitions 0/590 dead transitions. [2024-02-05 10:30:33,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 590 transitions, 13457 flow [2024-02-05 10:30:33,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:33,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 297 transitions. [2024-02-05 10:30:33,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-02-05 10:30:33,270 INFO L175 Difference]: Start difference. First operand has 303 places, 531 transitions, 11686 flow. Second operand 8 states and 297 transitions. [2024-02-05 10:30:33,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 590 transitions, 13457 flow [2024-02-05 10:30:33,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 590 transitions, 13428 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-02-05 10:30:33,927 INFO L231 Difference]: Finished difference. Result has 310 places, 541 transitions, 12300 flow [2024-02-05 10:30:33,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11660, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12300, PETRI_PLACES=310, PETRI_TRANSITIONS=541} [2024-02-05 10:30:33,928 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 229 predicate places. [2024-02-05 10:30:33,928 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 541 transitions, 12300 flow [2024-02-05 10:30:33,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:33,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:33,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:33,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-02-05 10:30:33,928 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:33,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1304580845, now seen corresponding path program 4 times [2024-02-05 10:30:33,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:33,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50477171] [2024-02-05 10:30:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:33,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:34,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:34,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50477171] [2024-02-05 10:30:34,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50477171] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:34,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:34,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:34,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895286392] [2024-02-05 10:30:34,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:34,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:34,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:34,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:34,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 541 transitions, 12300 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:34,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:34,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:34,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:35,603 INFO L124 PetriNetUnfolderBase]: 2750/5450 cut-off events. [2024-02-05 10:30:35,603 INFO L125 PetriNetUnfolderBase]: For 190938/191875 co-relation queries the response was YES. [2024-02-05 10:30:35,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47370 conditions, 5450 events. 2750/5450 cut-off events. For 190938/191875 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 41472 event pairs, 693 based on Foata normal form. 82/5361 useless extension candidates. Maximal degree in co-relation 47265. Up to 2285 conditions per place. [2024-02-05 10:30:35,672 INFO L140 encePairwiseOnDemand]: 58/77 looper letters, 331 selfloop transitions, 220 changer transitions 2/602 dead transitions. [2024-02-05 10:30:35,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 602 transitions, 14192 flow [2024-02-05 10:30:35,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 308 transitions. [2024-02-05 10:30:35,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-05 10:30:35,674 INFO L175 Difference]: Start difference. First operand has 310 places, 541 transitions, 12300 flow. Second operand 8 states and 308 transitions. [2024-02-05 10:30:35,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 602 transitions, 14192 flow [2024-02-05 10:30:36,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 602 transitions, 13903 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-02-05 10:30:36,291 INFO L231 Difference]: Finished difference. Result has 313 places, 544 transitions, 12604 flow [2024-02-05 10:30:36,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12016, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12604, PETRI_PLACES=313, PETRI_TRANSITIONS=544} [2024-02-05 10:30:36,292 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 232 predicate places. [2024-02-05 10:30:36,292 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 544 transitions, 12604 flow [2024-02-05 10:30:36,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:36,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:36,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:36,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-02-05 10:30:36,293 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:36,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:36,293 INFO L85 PathProgramCache]: Analyzing trace with hash -344943811, now seen corresponding path program 5 times [2024-02-05 10:30:36,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:36,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039989005] [2024-02-05 10:30:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:36,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:36,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:36,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039989005] [2024-02-05 10:30:36,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039989005] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:36,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:36,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:36,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954785057] [2024-02-05 10:30:36,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:36,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:36,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:36,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:36,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:36,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:36,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 544 transitions, 12604 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:36,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:36,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:36,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:37,948 INFO L124 PetriNetUnfolderBase]: 2816/5552 cut-off events. [2024-02-05 10:30:37,949 INFO L125 PetriNetUnfolderBase]: For 195656/196606 co-relation queries the response was YES. [2024-02-05 10:30:37,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48624 conditions, 5552 events. 2816/5552 cut-off events. For 195656/196606 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 42190 event pairs, 674 based on Foata normal form. 88/5463 useless extension candidates. Maximal degree in co-relation 48519. Up to 2371 conditions per place. [2024-02-05 10:30:38,007 INFO L140 encePairwiseOnDemand]: 63/77 looper letters, 366 selfloop transitions, 171 changer transitions 4/590 dead transitions. [2024-02-05 10:30:38,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 590 transitions, 14165 flow [2024-02-05 10:30:38,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-02-05 10:30:38,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842300556586271 [2024-02-05 10:30:38,009 INFO L175 Difference]: Start difference. First operand has 313 places, 544 transitions, 12604 flow. Second operand 7 states and 261 transitions. [2024-02-05 10:30:38,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 590 transitions, 14165 flow [2024-02-05 10:30:38,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 590 transitions, 13796 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-02-05 10:30:38,619 INFO L231 Difference]: Finished difference. Result has 310 places, 548 transitions, 12676 flow [2024-02-05 10:30:38,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12222, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12676, PETRI_PLACES=310, PETRI_TRANSITIONS=548} [2024-02-05 10:30:38,620 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 229 predicate places. [2024-02-05 10:30:38,620 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 548 transitions, 12676 flow [2024-02-05 10:30:38,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:38,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:38,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:38,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-02-05 10:30:38,620 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:38,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:38,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1789252519, now seen corresponding path program 1 times [2024-02-05 10:30:38,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:38,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056068368] [2024-02-05 10:30:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:38,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:38,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:38,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056068368] [2024-02-05 10:30:38,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056068368] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:38,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:38,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:30:38,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306505734] [2024-02-05 10:30:38,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:38,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:30:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:38,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:30:38,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:30:38,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:30:38,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 548 transitions, 12676 flow. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:38,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:38,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:30:38,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:39,827 INFO L124 PetriNetUnfolderBase]: 2143/4608 cut-off events. [2024-02-05 10:30:39,827 INFO L125 PetriNetUnfolderBase]: For 183804/184876 co-relation queries the response was YES. [2024-02-05 10:30:39,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42143 conditions, 4608 events. 2143/4608 cut-off events. For 183804/184876 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37253 event pairs, 249 based on Foata normal form. 65/4488 useless extension candidates. Maximal degree in co-relation 42042. Up to 1675 conditions per place. [2024-02-05 10:30:39,883 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 352 selfloop transitions, 170 changer transitions 2/604 dead transitions. [2024-02-05 10:30:39,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 604 transitions, 14463 flow [2024-02-05 10:30:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:30:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:30:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 277 transitions. [2024-02-05 10:30:39,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5995670995670995 [2024-02-05 10:30:39,884 INFO L175 Difference]: Start difference. First operand has 310 places, 548 transitions, 12676 flow. Second operand 6 states and 277 transitions. [2024-02-05 10:30:39,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 604 transitions, 14463 flow [2024-02-05 10:30:40,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 604 transitions, 14197 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-05 10:30:40,405 INFO L231 Difference]: Finished difference. Result has 313 places, 566 transitions, 13156 flow [2024-02-05 10:30:40,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12410, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13156, PETRI_PLACES=313, PETRI_TRANSITIONS=566} [2024-02-05 10:30:40,406 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 232 predicate places. [2024-02-05 10:30:40,406 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 566 transitions, 13156 flow [2024-02-05 10:30:40,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:40,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:40,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:40,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-02-05 10:30:40,407 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:40,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:40,408 INFO L85 PathProgramCache]: Analyzing trace with hash 438731721, now seen corresponding path program 1 times [2024-02-05 10:30:40,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:40,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708738986] [2024-02-05 10:30:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:40,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:40,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708738986] [2024-02-05 10:30:40,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708738986] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:40,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:40,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:30:40,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252945064] [2024-02-05 10:30:40,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:40,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:30:40,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:40,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:30:40,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:30:40,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:30:40,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 566 transitions, 13156 flow. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:40,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:40,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:30:40,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:41,662 INFO L124 PetriNetUnfolderBase]: 2178/4678 cut-off events. [2024-02-05 10:30:41,663 INFO L125 PetriNetUnfolderBase]: For 188721/189793 co-relation queries the response was YES. [2024-02-05 10:30:41,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43373 conditions, 4678 events. 2178/4678 cut-off events. For 188721/189793 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37756 event pairs, 239 based on Foata normal form. 53/4547 useless extension candidates. Maximal degree in co-relation 43270. Up to 1687 conditions per place. [2024-02-05 10:30:41,721 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 357 selfloop transitions, 163 changer transitions 2/602 dead transitions. [2024-02-05 10:30:41,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 602 transitions, 14662 flow [2024-02-05 10:30:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:30:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:30:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2024-02-05 10:30:41,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-02-05 10:30:41,732 INFO L175 Difference]: Start difference. First operand has 313 places, 566 transitions, 13156 flow. Second operand 6 states and 273 transitions. [2024-02-05 10:30:41,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 602 transitions, 14662 flow [2024-02-05 10:30:42,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 602 transitions, 14344 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-02-05 10:30:42,322 INFO L231 Difference]: Finished difference. Result has 316 places, 569 transitions, 13318 flow [2024-02-05 10:30:42,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12848, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13318, PETRI_PLACES=316, PETRI_TRANSITIONS=569} [2024-02-05 10:30:42,323 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 235 predicate places. [2024-02-05 10:30:42,323 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 569 transitions, 13318 flow [2024-02-05 10:30:42,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:42,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:42,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:42,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-02-05 10:30:42,324 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:42,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:42,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1787528751, now seen corresponding path program 2 times [2024-02-05 10:30:42,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:42,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853838589] [2024-02-05 10:30:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:42,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:42,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:42,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853838589] [2024-02-05 10:30:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853838589] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:42,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:42,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:30:42,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46259038] [2024-02-05 10:30:42,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:42,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:42,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:30:42,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 569 transitions, 13318 flow. Second operand has 8 states, 8 states have (on average 34.75) internal successors, (278), 8 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:42,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:42,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:30:42,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:43,545 INFO L124 PetriNetUnfolderBase]: 2176/4662 cut-off events. [2024-02-05 10:30:43,546 INFO L125 PetriNetUnfolderBase]: For 189727/190785 co-relation queries the response was YES. [2024-02-05 10:30:43,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43738 conditions, 4662 events. 2176/4662 cut-off events. For 189727/190785 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 37547 event pairs, 398 based on Foata normal form. 50/4533 useless extension candidates. Maximal degree in co-relation 43633. Up to 3452 conditions per place. [2024-02-05 10:30:43,636 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 454 selfloop transitions, 58 changer transitions 0/592 dead transitions. [2024-02-05 10:30:43,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 592 transitions, 14558 flow [2024-02-05 10:30:43,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:43,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 293 transitions. [2024-02-05 10:30:43,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435992578849722 [2024-02-05 10:30:43,638 INFO L175 Difference]: Start difference. First operand has 316 places, 569 transitions, 13318 flow. Second operand 7 states and 293 transitions. [2024-02-05 10:30:43,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 592 transitions, 14558 flow [2024-02-05 10:30:44,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 592 transitions, 14427 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-05 10:30:44,313 INFO L231 Difference]: Finished difference. Result has 321 places, 570 transitions, 13323 flow [2024-02-05 10:30:44,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13188, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13323, PETRI_PLACES=321, PETRI_TRANSITIONS=570} [2024-02-05 10:30:44,314 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 240 predicate places. [2024-02-05 10:30:44,314 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 570 transitions, 13323 flow [2024-02-05 10:30:44,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.75) internal successors, (278), 8 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:44,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:44,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:44,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-02-05 10:30:44,315 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:44,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash -543932333, now seen corresponding path program 2 times [2024-02-05 10:30:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:44,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641680412] [2024-02-05 10:30:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:44,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:44,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641680412] [2024-02-05 10:30:44,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641680412] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:44,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:44,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:30:44,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054957630] [2024-02-05 10:30:44,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:44,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:30:44,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:44,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:30:44,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:30:44,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:30:44,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 570 transitions, 13323 flow. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:44,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:44,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:30:44,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:45,632 INFO L124 PetriNetUnfolderBase]: 2159/4640 cut-off events. [2024-02-05 10:30:45,633 INFO L125 PetriNetUnfolderBase]: For 190356/191420 co-relation queries the response was YES. [2024-02-05 10:30:45,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43202 conditions, 4640 events. 2159/4640 cut-off events. For 190356/191420 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37503 event pairs, 249 based on Foata normal form. 55/4513 useless extension candidates. Maximal degree in co-relation 43096. Up to 1691 conditions per place. [2024-02-05 10:30:45,690 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 366 selfloop transitions, 156 changer transitions 2/604 dead transitions. [2024-02-05 10:30:45,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 604 transitions, 14801 flow [2024-02-05 10:30:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:30:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:30:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 276 transitions. [2024-02-05 10:30:45,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5974025974025974 [2024-02-05 10:30:45,691 INFO L175 Difference]: Start difference. First operand has 321 places, 570 transitions, 13323 flow. Second operand 6 states and 276 transitions. [2024-02-05 10:30:45,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 604 transitions, 14801 flow [2024-02-05 10:30:46,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 604 transitions, 14519 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-05 10:30:46,248 INFO L231 Difference]: Finished difference. Result has 321 places, 570 transitions, 13392 flow [2024-02-05 10:30:46,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13041, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13392, PETRI_PLACES=321, PETRI_TRANSITIONS=570} [2024-02-05 10:30:46,249 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 240 predicate places. [2024-02-05 10:30:46,249 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 570 transitions, 13392 flow [2024-02-05 10:30:46,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:46,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:46,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:46,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-02-05 10:30:46,250 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:46,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:46,251 INFO L85 PathProgramCache]: Analyzing trace with hash 537278939, now seen corresponding path program 3 times [2024-02-05 10:30:46,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:46,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310536398] [2024-02-05 10:30:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:46,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:46,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:46,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310536398] [2024-02-05 10:30:46,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310536398] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:46,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:46,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:30:46,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947508528] [2024-02-05 10:30:46,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:46,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:30:46,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:46,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:30:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:30:46,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-02-05 10:30:46,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 570 transitions, 13392 flow. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:46,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:46,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-02-05 10:30:46,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:47,543 INFO L124 PetriNetUnfolderBase]: 2144/4603 cut-off events. [2024-02-05 10:30:47,544 INFO L125 PetriNetUnfolderBase]: For 196045/197095 co-relation queries the response was YES. [2024-02-05 10:30:47,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42987 conditions, 4603 events. 2144/4603 cut-off events. For 196045/197095 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37054 event pairs, 217 based on Foata normal form. 61/4480 useless extension candidates. Maximal degree in co-relation 42880. Up to 1691 conditions per place. [2024-02-05 10:30:47,603 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 358 selfloop transitions, 161 changer transitions 2/601 dead transitions. [2024-02-05 10:30:47,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 601 transitions, 14782 flow [2024-02-05 10:30:47,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:30:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:30:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2024-02-05 10:30:47,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-02-05 10:30:47,605 INFO L175 Difference]: Start difference. First operand has 321 places, 570 transitions, 13392 flow. Second operand 6 states and 273 transitions. [2024-02-05 10:30:47,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 601 transitions, 14782 flow [2024-02-05 10:30:48,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 601 transitions, 14205 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-02-05 10:30:48,184 INFO L231 Difference]: Finished difference. Result has 310 places, 569 transitions, 13103 flow [2024-02-05 10:30:48,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12781, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13103, PETRI_PLACES=310, PETRI_TRANSITIONS=569} [2024-02-05 10:30:48,185 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 229 predicate places. [2024-02-05 10:30:48,185 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 569 transitions, 13103 flow [2024-02-05 10:30:48,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:48,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:48,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:48,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-02-05 10:30:48,185 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:48,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:48,186 INFO L85 PathProgramCache]: Analyzing trace with hash -814787918, now seen corresponding path program 1 times [2024-02-05 10:30:48,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:48,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088676830] [2024-02-05 10:30:48,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:48,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088676830] [2024-02-05 10:30:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088676830] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:48,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257587578] [2024-02-05 10:30:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:48,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:48,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:48,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:48,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:48,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:30:48,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 569 transitions, 13103 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:48,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:48,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:30:48,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:49,920 INFO L124 PetriNetUnfolderBase]: 3291/6266 cut-off events. [2024-02-05 10:30:49,921 INFO L125 PetriNetUnfolderBase]: For 214205/215083 co-relation queries the response was YES. [2024-02-05 10:30:49,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54773 conditions, 6266 events. 3291/6266 cut-off events. For 214205/215083 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 46604 event pairs, 467 based on Foata normal form. 29/6110 useless extension candidates. Maximal degree in co-relation 54678. Up to 2504 conditions per place. [2024-02-05 10:30:50,011 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 475 selfloop transitions, 184 changer transitions 2/700 dead transitions. [2024-02-05 10:30:50,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 700 transitions, 16220 flow [2024-02-05 10:30:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 295 transitions. [2024-02-05 10:30:50,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788961038961039 [2024-02-05 10:30:50,013 INFO L175 Difference]: Start difference. First operand has 310 places, 569 transitions, 13103 flow. Second operand 8 states and 295 transitions. [2024-02-05 10:30:50,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 700 transitions, 16220 flow [2024-02-05 10:30:50,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 700 transitions, 16019 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-05 10:30:50,660 INFO L231 Difference]: Finished difference. Result has 317 places, 595 transitions, 13863 flow [2024-02-05 10:30:50,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12939, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13863, PETRI_PLACES=317, PETRI_TRANSITIONS=595} [2024-02-05 10:30:50,661 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 236 predicate places. [2024-02-05 10:30:50,661 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 595 transitions, 13863 flow [2024-02-05 10:30:50,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:50,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:50,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:50,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-02-05 10:30:50,662 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:50,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1611897756, now seen corresponding path program 2 times [2024-02-05 10:30:50,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:50,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491639186] [2024-02-05 10:30:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:50,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:50,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:50,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491639186] [2024-02-05 10:30:50,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491639186] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:50,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:50,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:50,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338450812] [2024-02-05 10:30:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:50,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:50,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:50,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:30:50,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 595 transitions, 13863 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:50,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:50,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:30:50,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:52,821 INFO L124 PetriNetUnfolderBase]: 3347/6362 cut-off events. [2024-02-05 10:30:52,821 INFO L125 PetriNetUnfolderBase]: For 228278/229191 co-relation queries the response was YES. [2024-02-05 10:30:52,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56172 conditions, 6362 events. 3347/6362 cut-off events. For 228278/229191 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 47447 event pairs, 463 based on Foata normal form. 29/6206 useless extension candidates. Maximal degree in co-relation 56075. Up to 2524 conditions per place. [2024-02-05 10:30:52,894 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 485 selfloop transitions, 178 changer transitions 2/704 dead transitions. [2024-02-05 10:30:52,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 704 transitions, 16601 flow [2024-02-05 10:30:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2024-02-05 10:30:52,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-02-05 10:30:52,895 INFO L175 Difference]: Start difference. First operand has 317 places, 595 transitions, 13863 flow. Second operand 8 states and 292 transitions. [2024-02-05 10:30:52,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 704 transitions, 16601 flow [2024-02-05 10:30:53,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 704 transitions, 16463 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-05 10:30:53,472 INFO L231 Difference]: Finished difference. Result has 324 places, 599 transitions, 14172 flow [2024-02-05 10:30:53,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13728, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14172, PETRI_PLACES=324, PETRI_TRANSITIONS=599} [2024-02-05 10:30:53,472 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 243 predicate places. [2024-02-05 10:30:53,473 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 599 transitions, 14172 flow [2024-02-05 10:30:53,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:53,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:53,473 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] [2024-02-05 10:30:53,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-02-05 10:30:53,473 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:53,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:53,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1719630780, now seen corresponding path program 1 times [2024-02-05 10:30:53,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:53,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177661501] [2024-02-05 10:30:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:53,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:53,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:53,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177661501] [2024-02-05 10:30:53,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177661501] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:53,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:53,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:53,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149680171] [2024-02-05 10:30:53,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:53,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:53,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:53,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:53,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:53,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:53,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 599 transitions, 14172 flow. Second operand has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:53,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:53,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:53,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:55,246 INFO L124 PetriNetUnfolderBase]: 3110/6132 cut-off events. [2024-02-05 10:30:55,246 INFO L125 PetriNetUnfolderBase]: For 236500/237471 co-relation queries the response was YES. [2024-02-05 10:30:55,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53823 conditions, 6132 events. 3110/6132 cut-off events. For 236500/237471 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 47510 event pairs, 353 based on Foata normal form. 94/6072 useless extension candidates. Maximal degree in co-relation 53724. Up to 2271 conditions per place. [2024-02-05 10:30:55,331 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 387 selfloop transitions, 207 changer transitions 2/645 dead transitions. [2024-02-05 10:30:55,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 645 transitions, 15919 flow [2024-02-05 10:30:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 259 transitions. [2024-02-05 10:30:55,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-02-05 10:30:55,332 INFO L175 Difference]: Start difference. First operand has 324 places, 599 transitions, 14172 flow. Second operand 7 states and 259 transitions. [2024-02-05 10:30:55,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 645 transitions, 15919 flow [2024-02-05 10:30:55,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 645 transitions, 15632 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-02-05 10:30:56,003 INFO L231 Difference]: Finished difference. Result has 327 places, 599 transitions, 14361 flow [2024-02-05 10:30:56,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13885, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14361, PETRI_PLACES=327, PETRI_TRANSITIONS=599} [2024-02-05 10:30:56,004 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 246 predicate places. [2024-02-05 10:30:56,004 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 599 transitions, 14361 flow [2024-02-05 10:30:56,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:56,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:56,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:56,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-02-05 10:30:56,004 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:56,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:56,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1492070858, now seen corresponding path program 3 times [2024-02-05 10:30:56,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:56,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762231801] [2024-02-05 10:30:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:56,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762231801] [2024-02-05 10:30:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762231801] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:56,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:56,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:56,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190093704] [2024-02-05 10:30:56,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:56,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:56,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:56,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:56,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:56,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:30:56,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 599 transitions, 14361 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:56,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:56,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:30:56,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:57,713 INFO L124 PetriNetUnfolderBase]: 3299/6283 cut-off events. [2024-02-05 10:30:57,713 INFO L125 PetriNetUnfolderBase]: For 247990/248901 co-relation queries the response was YES. [2024-02-05 10:30:57,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56779 conditions, 6283 events. 3299/6283 cut-off events. For 247990/248901 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 46824 event pairs, 472 based on Foata normal form. 29/6128 useless extension candidates. Maximal degree in co-relation 56679. Up to 2508 conditions per place. [2024-02-05 10:30:57,787 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 469 selfloop transitions, 187 changer transitions 2/697 dead transitions. [2024-02-05 10:30:57,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 697 transitions, 16975 flow [2024-02-05 10:30:57,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:57,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:57,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2024-02-05 10:30:57,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47564935064935066 [2024-02-05 10:30:57,789 INFO L175 Difference]: Start difference. First operand has 327 places, 599 transitions, 14361 flow. Second operand 8 states and 293 transitions. [2024-02-05 10:30:57,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 697 transitions, 16975 flow [2024-02-05 10:30:58,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 697 transitions, 16561 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:30:58,491 INFO L231 Difference]: Finished difference. Result has 330 places, 600 transitions, 14390 flow [2024-02-05 10:30:58,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13947, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14390, PETRI_PLACES=330, PETRI_TRANSITIONS=600} [2024-02-05 10:30:58,492 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 249 predicate places. [2024-02-05 10:30:58,492 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 600 transitions, 14390 flow [2024-02-05 10:30:58,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:58,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:58,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:58,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-02-05 10:30:58,493 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:30:58,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1678199736, now seen corresponding path program 2 times [2024-02-05 10:30:58,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:58,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142653378] [2024-02-05 10:30:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:58,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:58,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:58,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142653378] [2024-02-05 10:30:58,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142653378] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:58,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:58,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:58,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174974063] [2024-02-05 10:30:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:58,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:58,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:58,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:58,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:30:58,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 600 transitions, 14390 flow. Second operand has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:58,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:58,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:30:58,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:00,209 INFO L124 PetriNetUnfolderBase]: 3069/6066 cut-off events. [2024-02-05 10:31:00,210 INFO L125 PetriNetUnfolderBase]: For 245163/246134 co-relation queries the response was YES. [2024-02-05 10:31:00,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54109 conditions, 6066 events. 3069/6066 cut-off events. For 245163/246134 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 46955 event pairs, 343 based on Foata normal form. 86/5999 useless extension candidates. Maximal degree in co-relation 54007. Up to 2259 conditions per place. [2024-02-05 10:31:00,520 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 392 selfloop transitions, 196 changer transitions 2/639 dead transitions. [2024-02-05 10:31:00,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 639 transitions, 16015 flow [2024-02-05 10:31:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:31:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:31:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 254 transitions. [2024-02-05 10:31:00,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712430426716141 [2024-02-05 10:31:00,522 INFO L175 Difference]: Start difference. First operand has 330 places, 600 transitions, 14390 flow. Second operand 7 states and 254 transitions. [2024-02-05 10:31:00,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 639 transitions, 16015 flow [2024-02-05 10:31:01,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 639 transitions, 15590 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-02-05 10:31:01,139 INFO L231 Difference]: Finished difference. Result has 328 places, 600 transitions, 14383 flow [2024-02-05 10:31:01,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13973, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14383, PETRI_PLACES=328, PETRI_TRANSITIONS=600} [2024-02-05 10:31:01,140 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 247 predicate places. [2024-02-05 10:31:01,140 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 600 transitions, 14383 flow [2024-02-05 10:31:01,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:01,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:01,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:01,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-02-05 10:31:01,141 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:01,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:01,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1705272806, now seen corresponding path program 3 times [2024-02-05 10:31:01,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:01,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744450342] [2024-02-05 10:31:01,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:01,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:01,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:01,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744450342] [2024-02-05 10:31:01,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744450342] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:01,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:01,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:01,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490145847] [2024-02-05 10:31:01,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:01,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:31:01,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:01,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:31:01,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:31:01,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:31:01,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 600 transitions, 14383 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:01,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:01,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:31:01,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:02,952 INFO L124 PetriNetUnfolderBase]: 3127/6155 cut-off events. [2024-02-05 10:31:02,952 INFO L125 PetriNetUnfolderBase]: For 244838/245815 co-relation queries the response was YES. [2024-02-05 10:31:03,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54504 conditions, 6155 events. 3127/6155 cut-off events. For 244838/245815 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 47644 event pairs, 642 based on Foata normal form. 76/6075 useless extension candidates. Maximal degree in co-relation 54403. Up to 5069 conditions per place. [2024-02-05 10:31:03,036 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 524 selfloop transitions, 62 changer transitions 0/635 dead transitions. [2024-02-05 10:31:03,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 635 transitions, 15953 flow [2024-02-05 10:31:03,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2024-02-05 10:31:03,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.417027417027417 [2024-02-05 10:31:03,038 INFO L175 Difference]: Start difference. First operand has 328 places, 600 transitions, 14383 flow. Second operand 9 states and 289 transitions. [2024-02-05 10:31:03,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 635 transitions, 15953 flow [2024-02-05 10:31:03,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 635 transitions, 15561 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:31:03,758 INFO L231 Difference]: Finished difference. Result has 333 places, 606 transitions, 14257 flow [2024-02-05 10:31:03,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14001, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14257, PETRI_PLACES=333, PETRI_TRANSITIONS=606} [2024-02-05 10:31:03,758 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 252 predicate places. [2024-02-05 10:31:03,759 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 606 transitions, 14257 flow [2024-02-05 10:31:03,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:03,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:03,759 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, 1, 1] [2024-02-05 10:31:03,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-02-05 10:31:03,759 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:03,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:03,760 INFO L85 PathProgramCache]: Analyzing trace with hash 887384730, now seen corresponding path program 4 times [2024-02-05 10:31:03,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:03,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182735385] [2024-02-05 10:31:03,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:03,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:03,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:03,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182735385] [2024-02-05 10:31:03,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182735385] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:03,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:03,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:03,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575488281] [2024-02-05 10:31:03,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:03,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:31:03,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:03,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:31:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:31:03,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:31:03,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 606 transitions, 14257 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:03,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:03,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:31:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:05,490 INFO L124 PetriNetUnfolderBase]: 3159/6211 cut-off events. [2024-02-05 10:31:05,490 INFO L125 PetriNetUnfolderBase]: For 234925/235902 co-relation queries the response was YES. [2024-02-05 10:31:05,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53945 conditions, 6211 events. 3159/6211 cut-off events. For 234925/235902 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 48069 event pairs, 642 based on Foata normal form. 76/6131 useless extension candidates. Maximal degree in co-relation 53841. Up to 5061 conditions per place. [2024-02-05 10:31:05,564 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 522 selfloop transitions, 65 changer transitions 0/636 dead transitions. [2024-02-05 10:31:05,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 636 transitions, 15748 flow [2024-02-05 10:31:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2024-02-05 10:31:05,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237012987012987 [2024-02-05 10:31:05,565 INFO L175 Difference]: Start difference. First operand has 333 places, 606 transitions, 14257 flow. Second operand 8 states and 261 transitions. [2024-02-05 10:31:05,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 636 transitions, 15748 flow [2024-02-05 10:31:06,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 636 transitions, 15659 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:31:06,227 INFO L231 Difference]: Finished difference. Result has 336 places, 608 transitions, 14350 flow [2024-02-05 10:31:06,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14168, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14350, PETRI_PLACES=336, PETRI_TRANSITIONS=608} [2024-02-05 10:31:06,228 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 255 predicate places. [2024-02-05 10:31:06,228 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 608 transitions, 14350 flow [2024-02-05 10:31:06,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:06,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:06,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:06,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-02-05 10:31:06,229 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:06,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:06,229 INFO L85 PathProgramCache]: Analyzing trace with hash -664230118, now seen corresponding path program 5 times [2024-02-05 10:31:06,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:06,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34342007] [2024-02-05 10:31:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:06,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:06,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:06,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34342007] [2024-02-05 10:31:06,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34342007] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:06,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:06,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:06,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007165811] [2024-02-05 10:31:06,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:06,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:31:06,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:06,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:31:06,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:31:06,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:31:06,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 608 transitions, 14350 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:06,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:06,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:31:06,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:08,486 INFO L124 PetriNetUnfolderBase]: 3179/6235 cut-off events. [2024-02-05 10:31:08,486 INFO L125 PetriNetUnfolderBase]: For 237755/238746 co-relation queries the response was YES. [2024-02-05 10:31:08,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54374 conditions, 6235 events. 3179/6235 cut-off events. For 237755/238746 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 48096 event pairs, 646 based on Foata normal form. 80/6155 useless extension candidates. Maximal degree in co-relation 54269. Up to 5021 conditions per place. [2024-02-05 10:31:08,550 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 519 selfloop transitions, 67 changer transitions 0/635 dead transitions. [2024-02-05 10:31:08,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 635 transitions, 15744 flow [2024-02-05 10:31:08,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:08,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 260 transitions. [2024-02-05 10:31:08,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-02-05 10:31:08,551 INFO L175 Difference]: Start difference. First operand has 336 places, 608 transitions, 14350 flow. Second operand 8 states and 260 transitions. [2024-02-05 10:31:08,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 635 transitions, 15744 flow [2024-02-05 10:31:09,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 635 transitions, 15623 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:09,166 INFO L231 Difference]: Finished difference. Result has 338 places, 608 transitions, 14377 flow [2024-02-05 10:31:09,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14229, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14377, PETRI_PLACES=338, PETRI_TRANSITIONS=608} [2024-02-05 10:31:09,167 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 257 predicate places. [2024-02-05 10:31:09,167 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 608 transitions, 14377 flow [2024-02-05 10:31:09,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:09,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:09,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:09,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-02-05 10:31:09,168 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:09,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1903546232, now seen corresponding path program 4 times [2024-02-05 10:31:09,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:09,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309402036] [2024-02-05 10:31:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:09,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:09,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:09,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309402036] [2024-02-05 10:31:09,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309402036] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:09,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:09,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:09,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285073400] [2024-02-05 10:31:09,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:09,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:31:09,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:09,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:31:09,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:31:09,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:09,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 608 transitions, 14377 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:09,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:09,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:09,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:11,229 INFO L124 PetriNetUnfolderBase]: 3303/6310 cut-off events. [2024-02-05 10:31:11,230 INFO L125 PetriNetUnfolderBase]: For 239692/240647 co-relation queries the response was YES. [2024-02-05 10:31:11,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56133 conditions, 6310 events. 3303/6310 cut-off events. For 239692/240647 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 47311 event pairs, 492 based on Foata normal form. 57/6191 useless extension candidates. Maximal degree in co-relation 56027. Up to 2512 conditions per place. [2024-02-05 10:31:11,320 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 482 selfloop transitions, 173 changer transitions 2/696 dead transitions. [2024-02-05 10:31:11,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 696 transitions, 16877 flow [2024-02-05 10:31:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 281 transitions. [2024-02-05 10:31:11,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616883116883117 [2024-02-05 10:31:11,322 INFO L175 Difference]: Start difference. First operand has 338 places, 608 transitions, 14377 flow. Second operand 8 states and 281 transitions. [2024-02-05 10:31:11,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 696 transitions, 16877 flow [2024-02-05 10:31:12,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 696 transitions, 16739 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-02-05 10:31:12,067 INFO L231 Difference]: Finished difference. Result has 340 places, 612 transitions, 14751 flow [2024-02-05 10:31:12,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14239, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14751, PETRI_PLACES=340, PETRI_TRANSITIONS=612} [2024-02-05 10:31:12,068 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 259 predicate places. [2024-02-05 10:31:12,068 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 612 transitions, 14751 flow [2024-02-05 10:31:12,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:12,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:12,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:12,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-02-05 10:31:12,069 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:12,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:12,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1420065236, now seen corresponding path program 5 times [2024-02-05 10:31:12,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:12,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68006619] [2024-02-05 10:31:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:12,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:12,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:12,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68006619] [2024-02-05 10:31:12,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68006619] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:12,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:12,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:12,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734385263] [2024-02-05 10:31:12,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:12,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:31:12,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:31:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:31:12,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:12,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 612 transitions, 14751 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:12,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:12,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:12,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:14,089 INFO L124 PetriNetUnfolderBase]: 3299/6306 cut-off events. [2024-02-05 10:31:14,090 INFO L125 PetriNetUnfolderBase]: For 252645/253604 co-relation queries the response was YES. [2024-02-05 10:31:14,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57272 conditions, 6306 events. 3299/6306 cut-off events. For 252645/253604 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 47240 event pairs, 492 based on Foata normal form. 57/6187 useless extension candidates. Maximal degree in co-relation 57164. Up to 2512 conditions per place. [2024-02-05 10:31:14,170 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 487 selfloop transitions, 171 changer transitions 2/699 dead transitions. [2024-02-05 10:31:14,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 699 transitions, 17191 flow [2024-02-05 10:31:14,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 287 transitions. [2024-02-05 10:31:14,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-02-05 10:31:14,172 INFO L175 Difference]: Start difference. First operand has 340 places, 612 transitions, 14751 flow. Second operand 8 states and 287 transitions. [2024-02-05 10:31:14,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 699 transitions, 17191 flow [2024-02-05 10:31:14,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 699 transitions, 16818 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:14,933 INFO L231 Difference]: Finished difference. Result has 342 places, 613 transitions, 14746 flow [2024-02-05 10:31:14,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14380, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14746, PETRI_PLACES=342, PETRI_TRANSITIONS=613} [2024-02-05 10:31:14,933 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 261 predicate places. [2024-02-05 10:31:14,933 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 613 transitions, 14746 flow [2024-02-05 10:31:14,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:14,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:14,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:14,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-02-05 10:31:14,934 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:14,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:14,934 INFO L85 PathProgramCache]: Analyzing trace with hash 577876300, now seen corresponding path program 6 times [2024-02-05 10:31:14,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:14,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760310088] [2024-02-05 10:31:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:14,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:15,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:15,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760310088] [2024-02-05 10:31:15,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760310088] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:15,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:15,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:15,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829807780] [2024-02-05 10:31:15,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:15,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:31:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:31:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:31:15,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:15,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 613 transitions, 14746 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:15,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:15,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:15,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:16,692 INFO L124 PetriNetUnfolderBase]: 3279/6271 cut-off events. [2024-02-05 10:31:16,692 INFO L125 PetriNetUnfolderBase]: For 249791/250719 co-relation queries the response was YES. [2024-02-05 10:31:16,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57095 conditions, 6271 events. 3279/6271 cut-off events. For 249791/250719 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 46915 event pairs, 448 based on Foata normal form. 37/6124 useless extension candidates. Maximal degree in co-relation 56986. Up to 2504 conditions per place. [2024-02-05 10:31:16,766 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 474 selfloop transitions, 177 changer transitions 2/692 dead transitions. [2024-02-05 10:31:16,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 692 transitions, 17089 flow [2024-02-05 10:31:16,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2024-02-05 10:31:16,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-02-05 10:31:16,767 INFO L175 Difference]: Start difference. First operand has 342 places, 613 transitions, 14746 flow. Second operand 8 states and 278 transitions. [2024-02-05 10:31:16,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 692 transitions, 17089 flow [2024-02-05 10:31:17,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 692 transitions, 16803 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-05 10:31:17,462 INFO L231 Difference]: Finished difference. Result has 346 places, 613 transitions, 14826 flow [2024-02-05 10:31:17,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14460, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14826, PETRI_PLACES=346, PETRI_TRANSITIONS=613} [2024-02-05 10:31:17,463 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 265 predicate places. [2024-02-05 10:31:17,463 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 613 transitions, 14826 flow [2024-02-05 10:31:17,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:17,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:17,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:17,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-02-05 10:31:17,464 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:17,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash -330195022, now seen corresponding path program 7 times [2024-02-05 10:31:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:17,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134088660] [2024-02-05 10:31:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:17,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:17,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:17,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134088660] [2024-02-05 10:31:17,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134088660] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:17,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:17,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:17,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951310137] [2024-02-05 10:31:17,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:17,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:31:17,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:31:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:31:17,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:17,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 613 transitions, 14826 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:17,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:17,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:17,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:19,257 INFO L124 PetriNetUnfolderBase]: 3331/6347 cut-off events. [2024-02-05 10:31:19,257 INFO L125 PetriNetUnfolderBase]: For 260669/261732 co-relation queries the response was YES. [2024-02-05 10:31:19,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57886 conditions, 6347 events. 3331/6347 cut-off events. For 260669/261732 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 47533 event pairs, 430 based on Foata normal form. 122/6315 useless extension candidates. Maximal degree in co-relation 57776. Up to 2530 conditions per place. [2024-02-05 10:31:19,337 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 405 selfloop transitions, 244 changer transitions 2/690 dead transitions. [2024-02-05 10:31:19,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 690 transitions, 17180 flow [2024-02-05 10:31:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2024-02-05 10:31:19,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-02-05 10:31:19,339 INFO L175 Difference]: Start difference. First operand has 346 places, 613 transitions, 14826 flow. Second operand 8 states and 286 transitions. [2024-02-05 10:31:19,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 690 transitions, 17180 flow [2024-02-05 10:31:20,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 690 transitions, 16948 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:31:20,094 INFO L231 Difference]: Finished difference. Result has 351 places, 634 transitions, 15533 flow [2024-02-05 10:31:20,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14607, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15533, PETRI_PLACES=351, PETRI_TRANSITIONS=634} [2024-02-05 10:31:20,098 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 270 predicate places. [2024-02-05 10:31:20,098 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 634 transitions, 15533 flow [2024-02-05 10:31:20,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:20,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:20,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:20,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-02-05 10:31:20,100 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:20,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:20,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1683836112, now seen corresponding path program 8 times [2024-02-05 10:31:20,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:20,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141909497] [2024-02-05 10:31:20,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:20,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:20,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:20,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141909497] [2024-02-05 10:31:20,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141909497] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:20,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:20,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:20,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923209460] [2024-02-05 10:31:20,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:20,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:31:20,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:20,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:31:20,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:31:20,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:20,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 634 transitions, 15533 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:20,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:20,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:20,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:21,962 INFO L124 PetriNetUnfolderBase]: 3327/6343 cut-off events. [2024-02-05 10:31:21,962 INFO L125 PetriNetUnfolderBase]: For 275150/276221 co-relation queries the response was YES. [2024-02-05 10:31:22,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59607 conditions, 6343 events. 3327/6343 cut-off events. For 275150/276221 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 47521 event pairs, 430 based on Foata normal form. 118/6301 useless extension candidates. Maximal degree in co-relation 59495. Up to 2530 conditions per place. [2024-02-05 10:31:22,047 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 415 selfloop transitions, 237 changer transitions 2/693 dead transitions. [2024-02-05 10:31:22,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 693 transitions, 17647 flow [2024-02-05 10:31:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2024-02-05 10:31:22,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-02-05 10:31:22,049 INFO L175 Difference]: Start difference. First operand has 351 places, 634 transitions, 15533 flow. Second operand 8 states and 292 transitions. [2024-02-05 10:31:22,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 693 transitions, 17647 flow [2024-02-05 10:31:22,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 693 transitions, 17323 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-02-05 10:31:22,916 INFO L231 Difference]: Finished difference. Result has 354 places, 635 transitions, 15720 flow [2024-02-05 10:31:22,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=15218, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15720, PETRI_PLACES=354, PETRI_TRANSITIONS=635} [2024-02-05 10:31:22,933 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 273 predicate places. [2024-02-05 10:31:22,933 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 635 transitions, 15720 flow [2024-02-05 10:31:22,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:22,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:22,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:22,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-02-05 10:31:22,934 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:22,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:22,934 INFO L85 PathProgramCache]: Analyzing trace with hash 841647176, now seen corresponding path program 9 times [2024-02-05 10:31:22,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:22,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96585907] [2024-02-05 10:31:22,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:23,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:23,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96585907] [2024-02-05 10:31:23,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96585907] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:23,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:23,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:23,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027607610] [2024-02-05 10:31:23,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:23,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:31:23,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:31:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:31:23,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:23,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 635 transitions, 15720 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:23,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:23,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:23,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:24,972 INFO L124 PetriNetUnfolderBase]: 3427/6543 cut-off events. [2024-02-05 10:31:24,973 INFO L125 PetriNetUnfolderBase]: For 281822/282805 co-relation queries the response was YES. [2024-02-05 10:31:25,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61179 conditions, 6543 events. 3427/6543 cut-off events. For 281822/282805 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 49220 event pairs, 416 based on Foata normal form. 70/6435 useless extension candidates. Maximal degree in co-relation 61067. Up to 2574 conditions per place. [2024-02-05 10:31:25,066 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 418 selfloop transitions, 249 changer transitions 2/708 dead transitions. [2024-02-05 10:31:25,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 708 transitions, 18248 flow [2024-02-05 10:31:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 285 transitions. [2024-02-05 10:31:25,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46266233766233766 [2024-02-05 10:31:25,067 INFO L175 Difference]: Start difference. First operand has 354 places, 635 transitions, 15720 flow. Second operand 8 states and 285 transitions. [2024-02-05 10:31:25,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 708 transitions, 18248 flow [2024-02-05 10:31:25,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 708 transitions, 17799 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:25,922 INFO L231 Difference]: Finished difference. Result has 357 places, 652 transitions, 16323 flow [2024-02-05 10:31:25,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=15307, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16323, PETRI_PLACES=357, PETRI_TRANSITIONS=652} [2024-02-05 10:31:25,923 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 276 predicate places. [2024-02-05 10:31:25,923 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 652 transitions, 16323 flow [2024-02-05 10:31:25,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:25,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:25,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:25,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-02-05 10:31:25,924 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:25,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:25,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1615888462, now seen corresponding path program 10 times [2024-02-05 10:31:25,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:25,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713966343] [2024-02-05 10:31:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:25,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:26,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:26,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713966343] [2024-02-05 10:31:26,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713966343] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:26,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:26,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:26,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788290617] [2024-02-05 10:31:26,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:26,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:31:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:31:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:31:26,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:26,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 652 transitions, 16323 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:26,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:26,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:26,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:27,894 INFO L124 PetriNetUnfolderBase]: 3639/6942 cut-off events. [2024-02-05 10:31:27,895 INFO L125 PetriNetUnfolderBase]: For 291067/292124 co-relation queries the response was YES. [2024-02-05 10:31:27,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64426 conditions, 6942 events. 3639/6942 cut-off events. For 291067/292124 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 52773 event pairs, 406 based on Foata normal form. 62/6825 useless extension candidates. Maximal degree in co-relation 64313. Up to 2656 conditions per place. [2024-02-05 10:31:27,981 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 433 selfloop transitions, 263 changer transitions 2/737 dead transitions. [2024-02-05 10:31:27,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 737 transitions, 19047 flow [2024-02-05 10:31:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 291 transitions. [2024-02-05 10:31:27,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724025974025974 [2024-02-05 10:31:27,983 INFO L175 Difference]: Start difference. First operand has 357 places, 652 transitions, 16323 flow. Second operand 8 states and 291 transitions. [2024-02-05 10:31:27,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 737 transitions, 19047 flow [2024-02-05 10:31:28,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 737 transitions, 18775 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:31:28,821 INFO L231 Difference]: Finished difference. Result has 363 places, 676 transitions, 17302 flow [2024-02-05 10:31:28,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=16069, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17302, PETRI_PLACES=363, PETRI_TRANSITIONS=676} [2024-02-05 10:31:28,823 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 282 predicate places. [2024-02-05 10:31:28,824 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 676 transitions, 17302 flow [2024-02-05 10:31:28,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:28,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:28,824 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] [2024-02-05 10:31:28,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-02-05 10:31:28,824 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:28,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1614967762, now seen corresponding path program 11 times [2024-02-05 10:31:28,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:28,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846507979] [2024-02-05 10:31:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:28,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:29,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:29,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846507979] [2024-02-05 10:31:29,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846507979] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:29,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:29,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:29,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348731470] [2024-02-05 10:31:29,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:29,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:31:29,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:29,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:31:29,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:31:29,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:29,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 676 transitions, 17302 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:29,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:29,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:29,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:31,025 INFO L124 PetriNetUnfolderBase]: 3635/6939 cut-off events. [2024-02-05 10:31:31,025 INFO L125 PetriNetUnfolderBase]: For 305777/306832 co-relation queries the response was YES. [2024-02-05 10:31:31,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65699 conditions, 6939 events. 3635/6939 cut-off events. For 305777/306832 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 52753 event pairs, 418 based on Foata normal form. 62/6823 useless extension candidates. Maximal degree in co-relation 65583. Up to 2656 conditions per place. [2024-02-05 10:31:31,112 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 423 selfloop transitions, 271 changer transitions 2/735 dead transitions. [2024-02-05 10:31:31,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 735 transitions, 19471 flow [2024-02-05 10:31:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2024-02-05 10:31:31,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-02-05 10:31:31,114 INFO L175 Difference]: Start difference. First operand has 363 places, 676 transitions, 17302 flow. Second operand 8 states and 292 transitions. [2024-02-05 10:31:31,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 735 transitions, 19471 flow [2024-02-05 10:31:31,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 735 transitions, 19143 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-02-05 10:31:31,965 INFO L231 Difference]: Finished difference. Result has 368 places, 678 transitions, 17646 flow [2024-02-05 10:31:31,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=16975, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17646, PETRI_PLACES=368, PETRI_TRANSITIONS=678} [2024-02-05 10:31:31,966 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 287 predicate places. [2024-02-05 10:31:31,966 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 678 transitions, 17646 flow [2024-02-05 10:31:31,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:31,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:31,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:31,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-02-05 10:31:31,967 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:31,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:31,967 INFO L85 PathProgramCache]: Analyzing trace with hash 529334194, now seen corresponding path program 12 times [2024-02-05 10:31:31,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:31,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518031988] [2024-02-05 10:31:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:31,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:32,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:32,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518031988] [2024-02-05 10:31:32,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518031988] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:32,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:32,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:32,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227263356] [2024-02-05 10:31:32,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:31:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:31:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:31:32,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:32,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 678 transitions, 17646 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:32,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:32,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:32,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:34,202 INFO L124 PetriNetUnfolderBase]: 3681/7028 cut-off events. [2024-02-05 10:31:34,202 INFO L125 PetriNetUnfolderBase]: For 324421/325512 co-relation queries the response was YES. [2024-02-05 10:31:34,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66735 conditions, 7028 events. 3681/7028 cut-off events. For 324421/325512 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 53629 event pairs, 418 based on Foata normal form. 64/6916 useless extension candidates. Maximal degree in co-relation 66617. Up to 2674 conditions per place. [2024-02-05 10:31:34,324 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 423 selfloop transitions, 273 changer transitions 2/737 dead transitions. [2024-02-05 10:31:34,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 737 transitions, 19816 flow [2024-02-05 10:31:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 282 transitions. [2024-02-05 10:31:34,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-02-05 10:31:34,326 INFO L175 Difference]: Start difference. First operand has 368 places, 678 transitions, 17646 flow. Second operand 8 states and 282 transitions. [2024-02-05 10:31:34,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 737 transitions, 19816 flow [2024-02-05 10:31:35,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 737 transitions, 19199 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:35,321 INFO L231 Difference]: Finished difference. Result has 371 places, 684 transitions, 17762 flow [2024-02-05 10:31:35,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17041, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17762, PETRI_PLACES=371, PETRI_TRANSITIONS=684} [2024-02-05 10:31:35,322 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 290 predicate places. [2024-02-05 10:31:35,322 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 684 transitions, 17762 flow [2024-02-05 10:31:35,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:35,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:35,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:35,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-02-05 10:31:35,322 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:35,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:35,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1263253366, now seen corresponding path program 13 times [2024-02-05 10:31:35,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:35,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004553524] [2024-02-05 10:31:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:35,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:35,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004553524] [2024-02-05 10:31:35,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004553524] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:35,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:35,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:31:35,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529295766] [2024-02-05 10:31:35,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:35,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:31:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:35,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:31:35,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:31:35,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:35,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 684 transitions, 17762 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:35,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:35,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:35,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:37,454 INFO L124 PetriNetUnfolderBase]: 3809/7205 cut-off events. [2024-02-05 10:31:37,455 INFO L125 PetriNetUnfolderBase]: For 326250/327369 co-relation queries the response was YES. [2024-02-05 10:31:37,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67541 conditions, 7205 events. 3809/7205 cut-off events. For 326250/327369 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 54641 event pairs, 347 based on Foata normal form. 54/7081 useless extension candidates. Maximal degree in co-relation 67421. Up to 2718 conditions per place. [2024-02-05 10:31:37,549 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 412 selfloop transitions, 288 changer transitions 2/741 dead transitions. [2024-02-05 10:31:37,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 741 transitions, 19927 flow [2024-02-05 10:31:37,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 279 transitions. [2024-02-05 10:31:37,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45292207792207795 [2024-02-05 10:31:37,551 INFO L175 Difference]: Start difference. First operand has 371 places, 684 transitions, 17762 flow. Second operand 8 states and 279 transitions. [2024-02-05 10:31:37,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 741 transitions, 19927 flow [2024-02-05 10:31:38,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 741 transitions, 19503 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-02-05 10:31:38,487 INFO L231 Difference]: Finished difference. Result has 376 places, 698 transitions, 18306 flow [2024-02-05 10:31:38,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17357, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18306, PETRI_PLACES=376, PETRI_TRANSITIONS=698} [2024-02-05 10:31:38,487 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 295 predicate places. [2024-02-05 10:31:38,488 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 698 transitions, 18306 flow [2024-02-05 10:31:38,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:38,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:38,488 INFO 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] [2024-02-05 10:31:38,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-02-05 10:31:38,488 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:38,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:38,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1532921430, now seen corresponding path program 1 times [2024-02-05 10:31:38,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:38,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327675368] [2024-02-05 10:31:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:38,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:38,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327675368] [2024-02-05 10:31:38,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327675368] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:38,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:38,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:38,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424596558] [2024-02-05 10:31:38,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:38,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:31:38,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:31:38,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:31:38,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:38,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 698 transitions, 18306 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:38,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:38,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:38,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:41,114 INFO L124 PetriNetUnfolderBase]: 3911/7665 cut-off events. [2024-02-05 10:31:41,115 INFO L125 PetriNetUnfolderBase]: For 346590/347744 co-relation queries the response was YES. [2024-02-05 10:31:41,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72327 conditions, 7665 events. 3911/7665 cut-off events. For 346590/347744 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 60863 event pairs, 821 based on Foata normal form. 44/7521 useless extension candidates. Maximal degree in co-relation 72205. Up to 2893 conditions per place. [2024-02-05 10:31:41,225 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 617 selfloop transitions, 143 changer transitions 34/833 dead transitions. [2024-02-05 10:31:41,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 833 transitions, 21819 flow [2024-02-05 10:31:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 289 transitions. [2024-02-05 10:31:41,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46915584415584416 [2024-02-05 10:31:41,228 INFO L175 Difference]: Start difference. First operand has 376 places, 698 transitions, 18306 flow. Second operand 8 states and 289 transitions. [2024-02-05 10:31:41,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 833 transitions, 21819 flow [2024-02-05 10:31:42,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 833 transitions, 21158 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-02-05 10:31:42,203 INFO L231 Difference]: Finished difference. Result has 378 places, 680 transitions, 17651 flow [2024-02-05 10:31:42,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17705, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17651, PETRI_PLACES=378, PETRI_TRANSITIONS=680} [2024-02-05 10:31:42,216 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 297 predicate places. [2024-02-05 10:31:42,219 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 680 transitions, 17651 flow [2024-02-05 10:31:42,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:42,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:42,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:42,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-02-05 10:31:42,220 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:42,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:42,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1794749180, now seen corresponding path program 2 times [2024-02-05 10:31:42,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:42,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187497124] [2024-02-05 10:31:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:42,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:42,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:42,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187497124] [2024-02-05 10:31:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187497124] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:42,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436943416] [2024-02-05 10:31:42,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:31:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:42,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:31:42,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:31:42,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:42,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 680 transitions, 17651 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:42,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:42,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:42,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:44,607 INFO L124 PetriNetUnfolderBase]: 3787/7493 cut-off events. [2024-02-05 10:31:44,607 INFO L125 PetriNetUnfolderBase]: For 330052/331234 co-relation queries the response was YES. [2024-02-05 10:31:44,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69435 conditions, 7493 events. 3787/7493 cut-off events. For 330052/331234 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 59857 event pairs, 818 based on Foata normal form. 36/7341 useless extension candidates. Maximal degree in co-relation 69312. Up to 2893 conditions per place. [2024-02-05 10:31:44,711 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 631 selfloop transitions, 129 changer transitions 5/804 dead transitions. [2024-02-05 10:31:44,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 804 transitions, 20876 flow [2024-02-05 10:31:44,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2024-02-05 10:31:44,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-02-05 10:31:44,712 INFO L175 Difference]: Start difference. First operand has 378 places, 680 transitions, 17651 flow. Second operand 8 states and 284 transitions. [2024-02-05 10:31:44,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 804 transitions, 20876 flow [2024-02-05 10:31:45,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 804 transitions, 20633 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:31:45,840 INFO L231 Difference]: Finished difference. Result has 381 places, 676 transitions, 17610 flow [2024-02-05 10:31:45,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17408, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17610, PETRI_PLACES=381, PETRI_TRANSITIONS=676} [2024-02-05 10:31:45,840 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 300 predicate places. [2024-02-05 10:31:45,841 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 676 transitions, 17610 flow [2024-02-05 10:31:45,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:45,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:45,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:45,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-02-05 10:31:45,848 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:45,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:45,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1443285318, now seen corresponding path program 3 times [2024-02-05 10:31:45,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:45,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900665356] [2024-02-05 10:31:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:45,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:46,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:46,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900665356] [2024-02-05 10:31:46,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900665356] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:46,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:46,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:46,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825490562] [2024-02-05 10:31:46,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:46,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:31:46,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:46,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:31:46,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:31:46,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:46,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 676 transitions, 17610 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:46,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:46,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:46,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:48,397 INFO L124 PetriNetUnfolderBase]: 3790/7566 cut-off events. [2024-02-05 10:31:48,397 INFO L125 PetriNetUnfolderBase]: For 331860/333084 co-relation queries the response was YES. [2024-02-05 10:31:48,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69856 conditions, 7566 events. 3790/7566 cut-off events. For 331860/333084 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 61001 event pairs, 823 based on Foata normal form. 38/7419 useless extension candidates. Maximal degree in co-relation 69732. Up to 2893 conditions per place. [2024-02-05 10:31:48,525 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 650 selfloop transitions, 107 changer transitions 3/799 dead transitions. [2024-02-05 10:31:48,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 799 transitions, 20800 flow [2024-02-05 10:31:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 285 transitions. [2024-02-05 10:31:48,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46266233766233766 [2024-02-05 10:31:48,527 INFO L175 Difference]: Start difference. First operand has 381 places, 676 transitions, 17610 flow. Second operand 8 states and 285 transitions. [2024-02-05 10:31:48,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 799 transitions, 20800 flow [2024-02-05 10:31:49,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 799 transitions, 20580 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:31:49,779 INFO L231 Difference]: Finished difference. Result has 384 places, 674 transitions, 17577 flow [2024-02-05 10:31:49,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17390, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17577, PETRI_PLACES=384, PETRI_TRANSITIONS=674} [2024-02-05 10:31:49,780 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 303 predicate places. [2024-02-05 10:31:49,780 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 674 transitions, 17577 flow [2024-02-05 10:31:49,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:49,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:49,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:49,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-02-05 10:31:49,781 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:49,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:49,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1260418466, now seen corresponding path program 1 times [2024-02-05 10:31:49,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:49,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052763977] [2024-02-05 10:31:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:49,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:50,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:50,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052763977] [2024-02-05 10:31:50,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052763977] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:50,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:50,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:50,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854733155] [2024-02-05 10:31:50,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:50,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:31:50,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:50,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:31:50,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:31:50,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:31:50,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 674 transitions, 17577 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 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) [2024-02-05 10:31:50,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:50,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:31:50,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:52,338 INFO L124 PetriNetUnfolderBase]: 3669/7527 cut-off events. [2024-02-05 10:31:52,338 INFO L125 PetriNetUnfolderBase]: For 334112/335183 co-relation queries the response was YES. [2024-02-05 10:31:52,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69117 conditions, 7527 events. 3669/7527 cut-off events. For 334112/335183 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 62288 event pairs, 767 based on Foata normal form. 119/7452 useless extension candidates. Maximal degree in co-relation 68992. Up to 2742 conditions per place. [2024-02-05 10:31:52,465 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 445 selfloop transitions, 180 changer transitions 36/712 dead transitions. [2024-02-05 10:31:52,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 712 transitions, 19430 flow [2024-02-05 10:31:52,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:31:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:31:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2024-02-05 10:31:52,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45269016697588127 [2024-02-05 10:31:52,467 INFO L175 Difference]: Start difference. First operand has 384 places, 674 transitions, 17577 flow. Second operand 7 states and 244 transitions. [2024-02-05 10:31:52,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 712 transitions, 19430 flow [2024-02-05 10:31:53,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 712 transitions, 19116 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:53,716 INFO L231 Difference]: Finished difference. Result has 385 places, 637 transitions, 16958 flow [2024-02-05 10:31:53,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17246, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16958, PETRI_PLACES=385, PETRI_TRANSITIONS=637} [2024-02-05 10:31:53,717 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 304 predicate places. [2024-02-05 10:31:53,717 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 637 transitions, 16958 flow [2024-02-05 10:31:53,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 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) [2024-02-05 10:31:53,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:53,718 INFO 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] [2024-02-05 10:31:53,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-02-05 10:31:53,718 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:53,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1920772544, now seen corresponding path program 4 times [2024-02-05 10:31:53,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:53,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402316911] [2024-02-05 10:31:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:53,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:53,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:53,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402316911] [2024-02-05 10:31:53,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402316911] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:53,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:53,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:53,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429096378] [2024-02-05 10:31:53,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:53,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:31:53,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:53,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:31:53,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:31:54,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:31:54,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 637 transitions, 16958 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:54,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:54,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:31:54,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:56,347 INFO L124 PetriNetUnfolderBase]: 3574/7180 cut-off events. [2024-02-05 10:31:56,347 INFO L125 PetriNetUnfolderBase]: For 331224/332268 co-relation queries the response was YES. [2024-02-05 10:31:56,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66703 conditions, 7180 events. 3574/7180 cut-off events. For 331224/332268 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 57458 event pairs, 836 based on Foata normal form. 30/7023 useless extension candidates. Maximal degree in co-relation 66577. Up to 2847 conditions per place. [2024-02-05 10:31:56,439 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 551 selfloop transitions, 134 changer transitions 19/743 dead transitions. [2024-02-05 10:31:56,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 743 transitions, 19837 flow [2024-02-05 10:31:56,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:56,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 279 transitions. [2024-02-05 10:31:56,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45292207792207795 [2024-02-05 10:31:56,441 INFO L175 Difference]: Start difference. First operand has 385 places, 637 transitions, 16958 flow. Second operand 8 states and 279 transitions. [2024-02-05 10:31:56,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 743 transitions, 19837 flow [2024-02-05 10:31:57,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 743 transitions, 19290 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-02-05 10:31:57,489 INFO L231 Difference]: Finished difference. Result has 384 places, 621 transitions, 16360 flow [2024-02-05 10:31:57,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=16423, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16360, PETRI_PLACES=384, PETRI_TRANSITIONS=621} [2024-02-05 10:31:57,489 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 303 predicate places. [2024-02-05 10:31:57,490 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 621 transitions, 16360 flow [2024-02-05 10:31:57,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:57,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:57,490 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, 1, 1, 1, 1] [2024-02-05 10:31:57,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-02-05 10:31:57,490 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:31:57,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 736613874, now seen corresponding path program 2 times [2024-02-05 10:31:57,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:57,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396457477] [2024-02-05 10:31:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:57,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:57,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396457477] [2024-02-05 10:31:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396457477] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:57,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733799215] [2024-02-05 10:31:57,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:57,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:31:57,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:57,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:31:57,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:31:57,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:31:57,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 621 transitions, 16360 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 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) [2024-02-05 10:31:57,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:57,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:31:57,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:59,718 INFO L124 PetriNetUnfolderBase]: 3313/6941 cut-off events. [2024-02-05 10:31:59,718 INFO L125 PetriNetUnfolderBase]: For 309690/310702 co-relation queries the response was YES. [2024-02-05 10:31:59,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62972 conditions, 6941 events. 3313/6941 cut-off events. For 309690/310702 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 57271 event pairs, 717 based on Foata normal form. 81/6847 useless extension candidates. Maximal degree in co-relation 62847. Up to 3320 conditions per place. [2024-02-05 10:31:59,826 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 423 selfloop transitions, 125 changer transitions 56/651 dead transitions. [2024-02-05 10:31:59,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 651 transitions, 17886 flow [2024-02-05 10:31:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:31:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:31:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-02-05 10:31:59,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-02-05 10:31:59,827 INFO L175 Difference]: Start difference. First operand has 384 places, 621 transitions, 16360 flow. Second operand 7 states and 238 transitions. [2024-02-05 10:31:59,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 651 transitions, 17886 flow [2024-02-05 10:32:00,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 651 transitions, 17553 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-02-05 10:32:00,853 INFO L231 Difference]: Finished difference. Result has 380 places, 565 transitions, 15153 flow [2024-02-05 10:32:00,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=16027, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15153, PETRI_PLACES=380, PETRI_TRANSITIONS=565} [2024-02-05 10:32:00,854 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 299 predicate places. [2024-02-05 10:32:00,854 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 565 transitions, 15153 flow [2024-02-05 10:32:00,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 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) [2024-02-05 10:32:00,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:00,854 INFO 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] [2024-02-05 10:32:00,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-02-05 10:32:00,854 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:00,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:00,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2133974492, now seen corresponding path program 3 times [2024-02-05 10:32:00,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:00,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385569446] [2024-02-05 10:32:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:00,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:01,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385569446] [2024-02-05 10:32:01,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385569446] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:01,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:01,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:01,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138900925] [2024-02-05 10:32:01,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:01,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:32:01,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:32:01,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:32:01,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:32:01,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 565 transitions, 15153 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 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) [2024-02-05 10:32:01,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:01,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:32:01,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:02,853 INFO L124 PetriNetUnfolderBase]: 3141/6608 cut-off events. [2024-02-05 10:32:02,854 INFO L125 PetriNetUnfolderBase]: For 290703/291723 co-relation queries the response was YES. [2024-02-05 10:32:02,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59835 conditions, 6608 events. 3141/6608 cut-off events. For 290703/291723 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 54199 event pairs, 858 based on Foata normal form. 57/6501 useless extension candidates. Maximal degree in co-relation 59713. Up to 5329 conditions per place. [2024-02-05 10:32:02,965 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 490 selfloop transitions, 36 changer transitions 28/601 dead transitions. [2024-02-05 10:32:02,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 601 transitions, 16706 flow [2024-02-05 10:32:02,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-02-05 10:32:02,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-02-05 10:32:02,966 INFO L175 Difference]: Start difference. First operand has 380 places, 565 transitions, 15153 flow. Second operand 8 states and 259 transitions. [2024-02-05 10:32:02,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 601 transitions, 16706 flow [2024-02-05 10:32:03,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 601 transitions, 16227 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-02-05 10:32:03,844 INFO L231 Difference]: Finished difference. Result has 376 places, 541 transitions, 14286 flow [2024-02-05 10:32:03,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14684, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14286, PETRI_PLACES=376, PETRI_TRANSITIONS=541} [2024-02-05 10:32:03,845 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 295 predicate places. [2024-02-05 10:32:03,845 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 541 transitions, 14286 flow [2024-02-05 10:32:03,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 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) [2024-02-05 10:32:03,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:03,845 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, 1, 1, 1, 1] [2024-02-05 10:32:03,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-02-05 10:32:03,846 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:03,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:03,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1153446686, now seen corresponding path program 4 times [2024-02-05 10:32:03,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:03,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011865719] [2024-02-05 10:32:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:03,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:04,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:04,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011865719] [2024-02-05 10:32:04,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011865719] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:04,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:04,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:04,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217298734] [2024-02-05 10:32:04,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:04,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:32:04,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:04,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:32:04,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:32:04,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:32:04,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 541 transitions, 14286 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 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) [2024-02-05 10:32:04,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:04,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:32:04,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:05,916 INFO L124 PetriNetUnfolderBase]: 3096/6539 cut-off events. [2024-02-05 10:32:05,917 INFO L125 PetriNetUnfolderBase]: For 274822/275825 co-relation queries the response was YES. [2024-02-05 10:32:05,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58022 conditions, 6539 events. 3096/6539 cut-off events. For 274822/275825 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53666 event pairs, 860 based on Foata normal form. 56/6431 useless extension candidates. Maximal degree in co-relation 57902. Up to 5175 conditions per place. [2024-02-05 10:32:05,991 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 475 selfloop transitions, 35 changer transitions 15/572 dead transitions. [2024-02-05 10:32:05,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 572 transitions, 15722 flow [2024-02-05 10:32:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:32:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:32:05,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-02-05 10:32:05,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-05 10:32:05,993 INFO L175 Difference]: Start difference. First operand has 376 places, 541 transitions, 14286 flow. Second operand 7 states and 231 transitions. [2024-02-05 10:32:05,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 572 transitions, 15722 flow [2024-02-05 10:32:06,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 572 transitions, 15614 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-02-05 10:32:06,713 INFO L231 Difference]: Finished difference. Result has 370 places, 528 transitions, 13996 flow [2024-02-05 10:32:06,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14178, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13996, PETRI_PLACES=370, PETRI_TRANSITIONS=528} [2024-02-05 10:32:06,714 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 289 predicate places. [2024-02-05 10:32:06,714 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 528 transitions, 13996 flow [2024-02-05 10:32:06,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 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) [2024-02-05 10:32:06,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:06,715 INFO 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] [2024-02-05 10:32:06,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-02-05 10:32:06,715 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:06,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:06,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1154041332, now seen corresponding path program 5 times [2024-02-05 10:32:06,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:06,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513028860] [2024-02-05 10:32:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:06,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:06,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:06,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513028860] [2024-02-05 10:32:06,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513028860] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:06,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:06,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:06,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535527294] [2024-02-05 10:32:06,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:06,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:32:06,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:06,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:32:06,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:32:07,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-02-05 10:32:07,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 528 transitions, 13996 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 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) [2024-02-05 10:32:07,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:07,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-02-05 10:32:07,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:08,702 INFO L124 PetriNetUnfolderBase]: 3091/6517 cut-off events. [2024-02-05 10:32:08,702 INFO L125 PetriNetUnfolderBase]: For 274137/275151 co-relation queries the response was YES. [2024-02-05 10:32:08,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57911 conditions, 6517 events. 3091/6517 cut-off events. For 274137/275151 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 53270 event pairs, 862 based on Foata normal form. 58/6405 useless extension candidates. Maximal degree in co-relation 57791. Up to 5021 conditions per place. [2024-02-05 10:32:08,816 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 455 selfloop transitions, 31 changer transitions 18/551 dead transitions. [2024-02-05 10:32:08,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 551 transitions, 15170 flow [2024-02-05 10:32:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:32:08,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:32:08,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-02-05 10:32:08,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230055658627087 [2024-02-05 10:32:08,818 INFO L175 Difference]: Start difference. First operand has 370 places, 528 transitions, 13996 flow. Second operand 7 states and 228 transitions. [2024-02-05 10:32:08,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 551 transitions, 15170 flow [2024-02-05 10:32:09,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 551 transitions, 14860 flow, removed 0 selfloop flow, removed 15 redundant places. [2024-02-05 10:32:09,687 INFO L231 Difference]: Finished difference. Result has 359 places, 509 transitions, 13395 flow [2024-02-05 10:32:09,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13646, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13395, PETRI_PLACES=359, PETRI_TRANSITIONS=509} [2024-02-05 10:32:09,687 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 278 predicate places. [2024-02-05 10:32:09,687 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 509 transitions, 13395 flow [2024-02-05 10:32:09,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 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) [2024-02-05 10:32:09,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:09,688 INFO 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] [2024-02-05 10:32:09,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-02-05 10:32:09,688 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:09,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:09,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1429110420, now seen corresponding path program 5 times [2024-02-05 10:32:09,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:09,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947694943] [2024-02-05 10:32:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:09,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947694943] [2024-02-05 10:32:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947694943] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:09,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:09,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:09,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573970135] [2024-02-05 10:32:09,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:09,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:32:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:32:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:32:09,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:32:09,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 509 transitions, 13395 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:09,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:09,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:32:09,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:11,668 INFO L124 PetriNetUnfolderBase]: 3276/6607 cut-off events. [2024-02-05 10:32:11,669 INFO L125 PetriNetUnfolderBase]: For 270990/272008 co-relation queries the response was YES. [2024-02-05 10:32:11,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58758 conditions, 6607 events. 3276/6607 cut-off events. For 270990/272008 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 51811 event pairs, 843 based on Foata normal form. 55/6507 useless extension candidates. Maximal degree in co-relation 58645. Up to 2685 conditions per place. [2024-02-05 10:32:11,748 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 471 selfloop transitions, 90 changer transitions 15/610 dead transitions. [2024-02-05 10:32:11,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 610 transitions, 15878 flow [2024-02-05 10:32:11,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:32:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:32:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2024-02-05 10:32:11,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43001443001443 [2024-02-05 10:32:11,750 INFO L175 Difference]: Start difference. First operand has 359 places, 509 transitions, 13395 flow. Second operand 9 states and 298 transitions. [2024-02-05 10:32:11,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 610 transitions, 15878 flow [2024-02-05 10:32:12,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 610 transitions, 15623 flow, removed 0 selfloop flow, removed 16 redundant places. [2024-02-05 10:32:12,438 INFO L231 Difference]: Finished difference. Result has 352 places, 498 transitions, 13061 flow [2024-02-05 10:32:12,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13140, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13061, PETRI_PLACES=352, PETRI_TRANSITIONS=498} [2024-02-05 10:32:12,438 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 271 predicate places. [2024-02-05 10:32:12,439 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 498 transitions, 13061 flow [2024-02-05 10:32:12,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:12,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:12,440 INFO 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] [2024-02-05 10:32:12,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-02-05 10:32:12,440 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:12,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:12,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1212588494, now seen corresponding path program 6 times [2024-02-05 10:32:12,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398268885] [2024-02-05 10:32:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:12,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:12,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398268885] [2024-02-05 10:32:12,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398268885] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:12,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:12,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:12,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599862227] [2024-02-05 10:32:12,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:12,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:32:12,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:32:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:32:12,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:32:12,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 498 transitions, 13061 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:12,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:12,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:32:12,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:14,451 INFO L124 PetriNetUnfolderBase]: 3184/6455 cut-off events. [2024-02-05 10:32:14,452 INFO L125 PetriNetUnfolderBase]: For 266483/267501 co-relation queries the response was YES. [2024-02-05 10:32:14,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56722 conditions, 6455 events. 3184/6455 cut-off events. For 266483/267501 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 50534 event pairs, 846 based on Foata normal form. 54/6362 useless extension candidates. Maximal degree in co-relation 56612. Up to 2685 conditions per place. [2024-02-05 10:32:14,540 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 464 selfloop transitions, 82 changer transitions 19/599 dead transitions. [2024-02-05 10:32:14,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 599 transitions, 15534 flow [2024-02-05 10:32:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:32:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:32:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 307 transitions. [2024-02-05 10:32:14,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443001443001443 [2024-02-05 10:32:14,541 INFO L175 Difference]: Start difference. First operand has 352 places, 498 transitions, 13061 flow. Second operand 9 states and 307 transitions. [2024-02-05 10:32:14,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 599 transitions, 15534 flow [2024-02-05 10:32:15,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 599 transitions, 15154 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-02-05 10:32:15,292 INFO L231 Difference]: Finished difference. Result has 350 places, 486 transitions, 12509 flow [2024-02-05 10:32:15,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12684, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12509, PETRI_PLACES=350, PETRI_TRANSITIONS=486} [2024-02-05 10:32:15,293 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 269 predicate places. [2024-02-05 10:32:15,293 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 486 transitions, 12509 flow [2024-02-05 10:32:15,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:15,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:15,293 INFO 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] [2024-02-05 10:32:15,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-02-05 10:32:15,294 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:15,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1572295156, now seen corresponding path program 7 times [2024-02-05 10:32:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:15,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821904901] [2024-02-05 10:32:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:15,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:15,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821904901] [2024-02-05 10:32:15,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821904901] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:15,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:15,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:15,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932805913] [2024-02-05 10:32:15,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:15,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:32:15,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:15,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:32:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:32:15,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:32:15,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 486 transitions, 12509 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:15,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:15,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:32:15,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:17,016 INFO L124 PetriNetUnfolderBase]: 3070/6235 cut-off events. [2024-02-05 10:32:17,016 INFO L125 PetriNetUnfolderBase]: For 239744/240718 co-relation queries the response was YES. [2024-02-05 10:32:17,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54118 conditions, 6235 events. 3070/6235 cut-off events. For 239744/240718 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 48510 event pairs, 817 based on Foata normal form. 34/6126 useless extension candidates. Maximal degree in co-relation 54007. Up to 2721 conditions per place. [2024-02-05 10:32:17,095 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 441 selfloop transitions, 65 changer transitions 24/564 dead transitions. [2024-02-05 10:32:17,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 564 transitions, 14639 flow [2024-02-05 10:32:17,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:17,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 265 transitions. [2024-02-05 10:32:17,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301948051948052 [2024-02-05 10:32:17,096 INFO L175 Difference]: Start difference. First operand has 350 places, 486 transitions, 12509 flow. Second operand 8 states and 265 transitions. [2024-02-05 10:32:17,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 564 transitions, 14639 flow [2024-02-05 10:32:17,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 564 transitions, 14472 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-02-05 10:32:17,791 INFO L231 Difference]: Finished difference. Result has 350 places, 466 transitions, 12021 flow [2024-02-05 10:32:17,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12342, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12021, PETRI_PLACES=350, PETRI_TRANSITIONS=466} [2024-02-05 10:32:17,792 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 269 predicate places. [2024-02-05 10:32:17,792 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 466 transitions, 12021 flow [2024-02-05 10:32:17,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:17,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:17,792 INFO 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] [2024-02-05 10:32:17,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-02-05 10:32:17,792 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:17,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash -532896226, now seen corresponding path program 8 times [2024-02-05 10:32:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64846219] [2024-02-05 10:32:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:18,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:18,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64846219] [2024-02-05 10:32:18,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64846219] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:18,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:18,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:18,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306859814] [2024-02-05 10:32:18,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:18,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:32:18,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:18,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:32:18,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:32:18,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:32:18,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 466 transitions, 12021 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:18,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:18,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:32:18,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:19,735 INFO L124 PetriNetUnfolderBase]: 3097/6311 cut-off events. [2024-02-05 10:32:19,735 INFO L125 PetriNetUnfolderBase]: For 233365/234278 co-relation queries the response was YES. [2024-02-05 10:32:19,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53806 conditions, 6311 events. 3097/6311 cut-off events. For 233365/234278 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 48894 event pairs, 675 based on Foata normal form. 46/6227 useless extension candidates. Maximal degree in co-relation 53694. Up to 3279 conditions per place. [2024-02-05 10:32:19,818 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 344 selfloop transitions, 132 changer transitions 16/526 dead transitions. [2024-02-05 10:32:19,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 526 transitions, 13718 flow [2024-02-05 10:32:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 281 transitions. [2024-02-05 10:32:19,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616883116883117 [2024-02-05 10:32:19,819 INFO L175 Difference]: Start difference. First operand has 350 places, 466 transitions, 12021 flow. Second operand 8 states and 281 transitions. [2024-02-05 10:32:19,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 526 transitions, 13718 flow [2024-02-05 10:32:20,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 526 transitions, 13442 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-02-05 10:32:20,531 INFO L231 Difference]: Finished difference. Result has 347 places, 452 transitions, 11792 flow [2024-02-05 10:32:20,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11745, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11792, PETRI_PLACES=347, PETRI_TRANSITIONS=452} [2024-02-05 10:32:20,532 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 266 predicate places. [2024-02-05 10:32:20,532 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 452 transitions, 11792 flow [2024-02-05 10:32:20,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:20,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:20,532 INFO 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] [2024-02-05 10:32:20,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-02-05 10:32:20,533 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:20,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:20,533 INFO L85 PathProgramCache]: Analyzing trace with hash -559590946, now seen corresponding path program 9 times [2024-02-05 10:32:20,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:20,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989969230] [2024-02-05 10:32:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:20,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:20,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:20,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989969230] [2024-02-05 10:32:20,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989969230] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:20,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:20,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:20,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89218286] [2024-02-05 10:32:20,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:20,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:32:20,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:20,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:32:20,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:32:20,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:32:20,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 452 transitions, 11792 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:20,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:20,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:32:20,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:22,306 INFO L124 PetriNetUnfolderBase]: 3049/6251 cut-off events. [2024-02-05 10:32:22,306 INFO L125 PetriNetUnfolderBase]: For 228046/228983 co-relation queries the response was YES. [2024-02-05 10:32:22,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53969 conditions, 6251 events. 3049/6251 cut-off events. For 228046/228983 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 48486 event pairs, 682 based on Foata normal form. 50/6175 useless extension candidates. Maximal degree in co-relation 53856. Up to 3279 conditions per place. [2024-02-05 10:32:22,408 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 348 selfloop transitions, 117 changer transitions 16/515 dead transitions. [2024-02-05 10:32:22,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 515 transitions, 13503 flow [2024-02-05 10:32:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2024-02-05 10:32:22,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-02-05 10:32:22,409 INFO L175 Difference]: Start difference. First operand has 347 places, 452 transitions, 11792 flow. Second operand 8 states and 278 transitions. [2024-02-05 10:32:22,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 515 transitions, 13503 flow [2024-02-05 10:32:23,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 515 transitions, 13244 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-05 10:32:23,164 INFO L231 Difference]: Finished difference. Result has 348 places, 437 transitions, 11493 flow [2024-02-05 10:32:23,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11539, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11493, PETRI_PLACES=348, PETRI_TRANSITIONS=437} [2024-02-05 10:32:23,165 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 267 predicate places. [2024-02-05 10:32:23,165 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 437 transitions, 11493 flow [2024-02-05 10:32:23,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:23,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:23,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:23,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-02-05 10:32:23,165 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:23,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:23,166 INFO L85 PathProgramCache]: Analyzing trace with hash -401704704, now seen corresponding path program 10 times [2024-02-05 10:32:23,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:23,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532185257] [2024-02-05 10:32:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:23,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:23,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:23,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532185257] [2024-02-05 10:32:23,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532185257] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:23,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:23,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939362663] [2024-02-05 10:32:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:23,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:32:23,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:32:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:32:23,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:32:23,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 437 transitions, 11493 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:23,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:23,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:32:23,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:24,885 INFO L124 PetriNetUnfolderBase]: 2963/6093 cut-off events. [2024-02-05 10:32:24,885 INFO L125 PetriNetUnfolderBase]: For 220304/221177 co-relation queries the response was YES. [2024-02-05 10:32:24,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52474 conditions, 6093 events. 2963/6093 cut-off events. For 220304/221177 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 47118 event pairs, 618 based on Foata normal form. 50/6019 useless extension candidates. Maximal degree in co-relation 52362. Up to 2452 conditions per place. [2024-02-05 10:32:24,957 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 330 selfloop transitions, 122 changer transitions 12/496 dead transitions. [2024-02-05 10:32:24,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 496 transitions, 13041 flow [2024-02-05 10:32:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:24,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 271 transitions. [2024-02-05 10:32:24,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43993506493506496 [2024-02-05 10:32:24,958 INFO L175 Difference]: Start difference. First operand has 348 places, 437 transitions, 11493 flow. Second operand 8 states and 271 transitions. [2024-02-05 10:32:24,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 496 transitions, 13041 flow [2024-02-05 10:32:25,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 496 transitions, 12799 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-02-05 10:32:25,748 INFO L231 Difference]: Finished difference. Result has 349 places, 426 transitions, 11313 flow [2024-02-05 10:32:25,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11251, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11313, PETRI_PLACES=349, PETRI_TRANSITIONS=426} [2024-02-05 10:32:25,748 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 268 predicate places. [2024-02-05 10:32:25,749 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 426 transitions, 11313 flow [2024-02-05 10:32:25,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:25,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:25,749 INFO 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] [2024-02-05 10:32:25,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-02-05 10:32:25,749 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:25,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:25,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1261233920, now seen corresponding path program 11 times [2024-02-05 10:32:25,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:25,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380623399] [2024-02-05 10:32:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:25,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:26,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380623399] [2024-02-05 10:32:26,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380623399] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:26,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:26,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:26,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508026592] [2024-02-05 10:32:26,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:26,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:32:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:32:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:32:26,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:32:26,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 426 transitions, 11313 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:26,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:26,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:32:26,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:27,753 INFO L124 PetriNetUnfolderBase]: 2880/5886 cut-off events. [2024-02-05 10:32:27,753 INFO L125 PetriNetUnfolderBase]: For 218693/219660 co-relation queries the response was YES. [2024-02-05 10:32:27,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51139 conditions, 5886 events. 2880/5886 cut-off events. For 218693/219660 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 45043 event pairs, 700 based on Foata normal form. 106/5886 useless extension candidates. Maximal degree in co-relation 51027. Up to 2483 conditions per place. [2024-02-05 10:32:27,869 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 289 selfloop transitions, 139 changer transitions 16/474 dead transitions. [2024-02-05 10:32:27,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 474 transitions, 12722 flow [2024-02-05 10:32:27,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2024-02-05 10:32:27,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366883116883117 [2024-02-05 10:32:27,870 INFO L175 Difference]: Start difference. First operand has 349 places, 426 transitions, 11313 flow. Second operand 8 states and 269 transitions. [2024-02-05 10:32:27,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 474 transitions, 12722 flow [2024-02-05 10:32:28,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 474 transitions, 12268 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-02-05 10:32:28,816 INFO L231 Difference]: Finished difference. Result has 347 places, 412 transitions, 10911 flow [2024-02-05 10:32:28,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10859, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10911, PETRI_PLACES=347, PETRI_TRANSITIONS=412} [2024-02-05 10:32:28,816 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 266 predicate places. [2024-02-05 10:32:28,817 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 412 transitions, 10911 flow [2024-02-05 10:32:28,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:28,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:28,817 INFO 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] [2024-02-05 10:32:28,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-02-05 10:32:28,817 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:28,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:28,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1260313220, now seen corresponding path program 12 times [2024-02-05 10:32:28,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:28,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066630819] [2024-02-05 10:32:28,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:28,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:29,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:29,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066630819] [2024-02-05 10:32:29,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066630819] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:29,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:29,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:29,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316220402] [2024-02-05 10:32:29,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:29,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:32:29,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:29,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:32:29,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:32:29,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:32:29,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 412 transitions, 10911 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:29,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:29,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:32:29,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:30,518 INFO L124 PetriNetUnfolderBase]: 2792/5744 cut-off events. [2024-02-05 10:32:30,519 INFO L125 PetriNetUnfolderBase]: For 205476/206427 co-relation queries the response was YES. [2024-02-05 10:32:30,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49479 conditions, 5744 events. 2792/5744 cut-off events. For 205476/206427 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 43938 event pairs, 703 based on Foata normal form. 98/5744 useless extension candidates. Maximal degree in co-relation 49369. Up to 2483 conditions per place. [2024-02-05 10:32:30,598 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 289 selfloop transitions, 120 changer transitions 25/462 dead transitions. [2024-02-05 10:32:30,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 462 transitions, 12335 flow [2024-02-05 10:32:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2024-02-05 10:32:30,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-02-05 10:32:30,600 INFO L175 Difference]: Start difference. First operand has 347 places, 412 transitions, 10911 flow. Second operand 8 states and 278 transitions. [2024-02-05 10:32:30,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 462 transitions, 12335 flow [2024-02-05 10:32:31,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 462 transitions, 11829 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-02-05 10:32:31,296 INFO L231 Difference]: Finished difference. Result has 343 places, 388 transitions, 10139 flow [2024-02-05 10:32:31,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10413, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10139, PETRI_PLACES=343, PETRI_TRANSITIONS=388} [2024-02-05 10:32:31,297 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 262 predicate places. [2024-02-05 10:32:31,297 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 388 transitions, 10139 flow [2024-02-05 10:32:31,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:31,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:31,297 INFO 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] [2024-02-05 10:32:31,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-02-05 10:32:31,297 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:31,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:31,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2102502156, now seen corresponding path program 13 times [2024-02-05 10:32:31,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:31,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788960422] [2024-02-05 10:32:31,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:31,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:31,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:31,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788960422] [2024-02-05 10:32:31,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788960422] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:31,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:31,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:31,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318527695] [2024-02-05 10:32:31,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:31,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:32:31,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:32:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:32:31,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:32:31,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 388 transitions, 10139 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:31,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:31,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:32:31,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:32,840 INFO L124 PetriNetUnfolderBase]: 2696/5658 cut-off events. [2024-02-05 10:32:32,840 INFO L125 PetriNetUnfolderBase]: For 181067/181902 co-relation queries the response was YES. [2024-02-05 10:32:32,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47331 conditions, 5658 events. 2696/5658 cut-off events. For 181067/181902 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 43720 event pairs, 737 based on Foata normal form. 50/5614 useless extension candidates. Maximal degree in co-relation 47224. Up to 2680 conditions per place. [2024-02-05 10:32:32,904 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 268 selfloop transitions, 117 changer transitions 31/444 dead transitions. [2024-02-05 10:32:32,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 444 transitions, 11644 flow [2024-02-05 10:32:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 272 transitions. [2024-02-05 10:32:32,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-02-05 10:32:32,905 INFO L175 Difference]: Start difference. First operand has 343 places, 388 transitions, 10139 flow. Second operand 8 states and 272 transitions. [2024-02-05 10:32:32,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 444 transitions, 11644 flow [2024-02-05 10:32:33,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 444 transitions, 11188 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-02-05 10:32:33,412 INFO L231 Difference]: Finished difference. Result has 337 places, 365 transitions, 9352 flow [2024-02-05 10:32:33,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9687, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9352, PETRI_PLACES=337, PETRI_TRANSITIONS=365} [2024-02-05 10:32:33,413 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 256 predicate places. [2024-02-05 10:32:33,413 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 365 transitions, 9352 flow [2024-02-05 10:32:33,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:33,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:33,413 INFO 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] [2024-02-05 10:32:33,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-02-05 10:32:33,414 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:33,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:33,414 INFO L85 PathProgramCache]: Analyzing trace with hash 332214468, now seen corresponding path program 14 times [2024-02-05 10:32:33,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:33,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143845857] [2024-02-05 10:32:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:33,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:33,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:33,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143845857] [2024-02-05 10:32:33,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143845857] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:33,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:33,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:32:33,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129686982] [2024-02-05 10:32:33,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:33,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:32:33,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:33,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:32:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:32:33,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-02-05 10:32:33,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 365 transitions, 9352 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:33,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:33,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-02-05 10:32:33,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:34,848 INFO L124 PetriNetUnfolderBase]: 2623/5459 cut-off events. [2024-02-05 10:32:34,848 INFO L125 PetriNetUnfolderBase]: For 162201/163000 co-relation queries the response was YES. [2024-02-05 10:32:34,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44833 conditions, 5459 events. 2623/5459 cut-off events. For 162201/163000 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 41441 event pairs, 473 based on Foata normal form. 36/5403 useless extension candidates. Maximal degree in co-relation 44728. Up to 2173 conditions per place. [2024-02-05 10:32:34,916 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 230 selfloop transitions, 119 changer transitions 26/402 dead transitions. [2024-02-05 10:32:34,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 402 transitions, 10469 flow [2024-02-05 10:32:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:34,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 265 transitions. [2024-02-05 10:32:34,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301948051948052 [2024-02-05 10:32:34,917 INFO L175 Difference]: Start difference. First operand has 337 places, 365 transitions, 9352 flow. Second operand 8 states and 265 transitions. [2024-02-05 10:32:34,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 402 transitions, 10469 flow [2024-02-05 10:32:35,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 402 transitions, 9979 flow, removed 2 selfloop flow, removed 26 redundant places. [2024-02-05 10:32:35,351 INFO L231 Difference]: Finished difference. Result has 316 places, 338 transitions, 8599 flow [2024-02-05 10:32:35,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8798, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8599, PETRI_PLACES=316, PETRI_TRANSITIONS=338} [2024-02-05 10:32:35,352 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 235 predicate places. [2024-02-05 10:32:35,352 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 338 transitions, 8599 flow [2024-02-05 10:32:35,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:35,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:35,353 INFO 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, 1, 1] [2024-02-05 10:32:35,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-02-05 10:32:35,353 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-02-05 10:32:35,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:35,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1065832650, now seen corresponding path program 1 times [2024-02-05 10:32:35,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:35,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475835438] [2024-02-05 10:32:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:35,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-05 10:32:35,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-05 10:32:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-05 10:32:35,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-05 10:32:35,390 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-05 10:32:35,391 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (63 of 64 remaining) [2024-02-05 10:32:35,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (62 of 64 remaining) [2024-02-05 10:32:35,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (61 of 64 remaining) [2024-02-05 10:32:35,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 64 remaining) [2024-02-05 10:32:35,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 64 remaining) [2024-02-05 10:32:35,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 64 remaining) [2024-02-05 10:32:35,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 64 remaining) [2024-02-05 10:32:35,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 64 remaining) [2024-02-05 10:32:35,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 64 remaining) [2024-02-05 10:32:35,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 64 remaining) [2024-02-05 10:32:35,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 64 remaining) [2024-02-05 10:32:35,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 64 remaining) [2024-02-05 10:32:35,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 64 remaining) [2024-02-05 10:32:35,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err12ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 64 remaining) [2024-02-05 10:32:35,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err13ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 64 remaining) [2024-02-05 10:32:35,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 64 remaining) [2024-02-05 10:32:35,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 64 remaining) [2024-02-05 10:32:35,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 64 remaining) [2024-02-05 10:32:35,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 64 remaining) [2024-02-05 10:32:35,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 64 remaining) [2024-02-05 10:32:35,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 64 remaining) [2024-02-05 10:32:35,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 64 remaining) [2024-02-05 10:32:35,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 64 remaining) [2024-02-05 10:32:35,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 64 remaining) [2024-02-05 10:32:35,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 64 remaining) [2024-02-05 10:32:35,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 64 remaining) [2024-02-05 10:32:35,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 64 remaining) [2024-02-05 10:32:35,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 64 remaining) [2024-02-05 10:32:35,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 64 remaining) [2024-02-05 10:32:35,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 64 remaining) [2024-02-05 10:32:35,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 64 remaining) [2024-02-05 10:32:35,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 64 remaining) [2024-02-05 10:32:35,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 64 remaining) [2024-02-05 10:32:35,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 64 remaining) [2024-02-05 10:32:35,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 64 remaining) [2024-02-05 10:32:35,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (28 of 64 remaining) [2024-02-05 10:32:35,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 64 remaining) [2024-02-05 10:32:35,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 64 remaining) [2024-02-05 10:32:35,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 64 remaining) [2024-02-05 10:32:35,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 64 remaining) [2024-02-05 10:32:35,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 64 remaining) [2024-02-05 10:32:35,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 64 remaining) [2024-02-05 10:32:35,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 64 remaining) [2024-02-05 10:32:35,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 64 remaining) [2024-02-05 10:32:35,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 64 remaining) [2024-02-05 10:32:35,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 64 remaining) [2024-02-05 10:32:35,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 64 remaining) [2024-02-05 10:32:35,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 64 remaining) [2024-02-05 10:32:35,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 64 remaining) [2024-02-05 10:32:35,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 64 remaining) [2024-02-05 10:32:35,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err12ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 64 remaining) [2024-02-05 10:32:35,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err13ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 64 remaining) [2024-02-05 10:32:35,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 64 remaining) [2024-02-05 10:32:35,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 64 remaining) [2024-02-05 10:32:35,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 64 remaining) [2024-02-05 10:32:35,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 64 remaining) [2024-02-05 10:32:35,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 64 remaining) [2024-02-05 10:32:35,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 64 remaining) [2024-02-05 10:32:35,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 64 remaining) [2024-02-05 10:32:35,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 64 remaining) [2024-02-05 10:32:35,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 64 remaining) [2024-02-05 10:32:35,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 64 remaining) [2024-02-05 10:32:35,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 64 remaining) [2024-02-05 10:32:35,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 64 remaining) [2024-02-05 10:32:35,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-02-05 10:32:35,401 INFO L445 BasicCegarLoop]: Path program histogram: [14, 13, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:35,423 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-05 10:32:35,424 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-05 10:32:35,473 INFO L503 ceAbstractionStarter]: Automizer considered 35 witness invariants [2024-02-05 10:32:35,473 INFO L504 ceAbstractionStarter]: WitnessConsidered=35 [2024-02-05 10:32:35,474 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 10:32:35 BasicIcfg [2024-02-05 10:32:35,475 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-05 10:32:35,475 INFO L158 Benchmark]: Toolchain (without parser) took 224512.45ms. Allocated memory was 127.9MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 67.9MB in the beginning and 1.3GB in the end (delta: -1.3GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2024-02-05 10:32:35,475 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-05 10:32:35,476 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 80.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-05 10:32:35,476 INFO L158 Benchmark]: CACSL2BoogieTranslator took 744.01ms. Allocated memory was 127.9MB in the beginning and 167.8MB in the end (delta: 39.8MB). Free memory was 67.5MB in the beginning and 98.3MB in the end (delta: -30.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2024-02-05 10:32:35,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.66ms. Allocated memory is still 167.8MB. Free memory was 98.3MB in the beginning and 96.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-05 10:32:35,476 INFO L158 Benchmark]: Boogie Preprocessor took 80.44ms. Allocated memory is still 167.8MB. Free memory was 96.2MB in the beginning and 93.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-05 10:32:35,476 INFO L158 Benchmark]: RCFGBuilder took 703.78ms. Allocated memory is still 167.8MB. Free memory was 93.7MB in the beginning and 78.4MB in the end (delta: 15.3MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2024-02-05 10:32:35,477 INFO L158 Benchmark]: TraceAbstraction took 222935.19ms. Allocated memory was 167.8MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 77.4MB in the beginning and 1.3GB in the end (delta: -1.3GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2024-02-05 10:32:35,477 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 80.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 744.01ms. Allocated memory was 127.9MB in the beginning and 167.8MB in the end (delta: 39.8MB). Free memory was 67.5MB in the beginning and 98.3MB in the end (delta: -30.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.66ms. Allocated memory is still 167.8MB. Free memory was 98.3MB in the beginning and 96.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.44ms. Allocated memory is still 167.8MB. Free memory was 96.2MB in the beginning and 93.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 703.78ms. Allocated memory is still 167.8MB. Free memory was 93.7MB in the beginning and 78.4MB in the end (delta: 15.3MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * TraceAbstraction took 222935.19ms. Allocated memory was 167.8MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 77.4MB in the beginning and 1.3GB in the end (delta: -1.3GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L760] 0 pthread_t t2573; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, x=0, y=0] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L761] FCALL, FORK 0 pthread_create(&t2573, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, x=0, y=0] [L762] 0 pthread_t t2574; [L763] FCALL, FORK 0 pthread_create(&t2574, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=0, y=0] [L719] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L720] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L720] 1 y = 2 [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L737] 2 x = 1 [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L740] 2 y = 1 [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L725] 1 __unbuffered_p0_EAX = x [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L745] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L745] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L730] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L765] 0 main$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[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_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[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2573={5:0}, t2574={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[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_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[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2573={5:0}, t2574={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[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_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=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=1, y=1] - UnprovableResult [Line: 719]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 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: 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. - 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 129 locations, 64 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: 222.7s, OverallIterations: 124, TraceHistogramMax: 1, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 198.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10601 SdHoareTripleChecker+Valid, 21.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9574 mSDsluCounter, 2483 SdHoareTripleChecker+Invalid, 17.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2128 mSDsCounter, 1862 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27414 IncrementalHoareTripleChecker+Invalid, 29276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1862 mSolverCounterUnsat, 355 mSDtfsCounter, 27414 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 776 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 725 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18306occurred in iteration=104, InterpolantAutomatonStates: 860, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 2394 NumberOfCodeBlocks, 2394 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 2241 ConstructedInterpolants, 0 QuantifiedInterpolants, 53905 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 123 InterpolantComputations, 123 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-05 10:32:35,512 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