./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/45_monabsex1_vs.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8857f20b 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-ext/45_monabsex1_vs.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/45_monabsex1_vs.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-8857f20-m [2024-01-29 22:51:10,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 22:51:10,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 22:51:10,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 22:51:10,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 22:51:11,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 22:51:11,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 22:51:11,003 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 22:51:11,004 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 22:51:11,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 22:51:11,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 22:51:11,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 22:51:11,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 22:51:11,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 22:51:11,009 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 22:51:11,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 22:51:11,010 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 22:51:11,010 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 22:51:11,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 22:51:11,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 22:51:11,010 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 22:51:11,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 22:51:11,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 22:51:11,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 22:51:11,011 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 22:51:11,011 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 22:51:11,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 22:51:11,012 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 22:51:11,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 22:51:11,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 22:51:11,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 22:51:11,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 22:51:11,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:51:11,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 22:51:11,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 22:51:11,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 22:51:11,014 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 22:51:11,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 22:51:11,014 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 22:51:11,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 22:51:11,015 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 22:51:11,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 22:51:11,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 22:51:11,022 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 22:51:11,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 22:51:11,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 22:51:11,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 22:51:11,243 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 22:51:11,244 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 22:51:11,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/45_monabsex1_vs.yml/witness.yml [2024-01-29 22:51:11,327 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 22:51:11,327 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 22:51:11,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2024-01-29 22:51:12,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 22:51:12,455 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 22:51:12,455 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2024-01-29 22:51:12,470 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510bbefeb/f6f184b821ae499181100f27685ab633/FLAG1a5ce0a2f [2024-01-29 22:51:12,482 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510bbefeb/f6f184b821ae499181100f27685ab633 [2024-01-29 22:51:12,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 22:51:12,484 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 22:51:12,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 22:51:12,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 22:51:12,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 22:51:12,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:51:11" (1/2) ... [2024-01-29 22:51:12,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee913cc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:12, skipping insertion in model container [2024-01-29 22:51:12,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:51:11" (1/2) ... [2024-01-29 22:51:12,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8543f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:12, skipping insertion in model container [2024-01-29 22:51:12,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:51:12" (2/2) ... [2024-01-29 22:51:12,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee913cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:12, skipping insertion in model container [2024-01-29 22:51:12,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:51:12" (2/2) ... [2024-01-29 22:51:12,495 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 22:51:12,530 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 22:51:12,532 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] s == 0 [2024-01-29 22:51:12,532 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] 4 == l [2024-01-29 22:51:12,532 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (4 == l) && (l == 4) [2024-01-29 22:51:12,532 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (4 == l) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:12,533 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] (unsigned long )arg == 0UL [2024-01-29 22:51:12,533 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (4 == l) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:12,533 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] ((4 == l) && ((unsigned long )arg == 0UL)) && (s != 4) [2024-01-29 22:51:12,534 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] ((4 == l) && ((unsigned long )arg == 0UL)) && (4 == l) [2024-01-29 22:51:12,534 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] ((4 == l) && ((unsigned long )arg == 0UL)) && (l == 4) [2024-01-29 22:51:12,534 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] 4 == l [2024-01-29 22:51:12,534 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (4 == l) && (l == 4) [2024-01-29 22:51:12,534 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] ((4 == l) && ((unsigned long )arg == 0UL)) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:12,534 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] 4 == l [2024-01-29 22:51:12,534 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (4 == l) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:12,535 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (4 == l) && (l == 4) [2024-01-29 22:51:12,535 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] (unsigned long )arg == 0UL [2024-01-29 22:51:12,535 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L712] 4 == l [2024-01-29 22:51:12,535 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L712] (4 == l) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:12,535 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L712] (4 == l) && (l == 4) [2024-01-29 22:51:12,535 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] 4 == l [2024-01-29 22:51:12,535 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] (4 == l) && (l == 4) [2024-01-29 22:51:12,536 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] (4 == l) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:12,536 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] (((4 == l) && (s == 4)) && (l == 4)) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:12,536 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] ((4 == l) && (s == 4)) && (l == 4) [2024-01-29 22:51:12,536 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] (4 == l) && (s == 4) [2024-01-29 22:51:12,536 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] 4 == l [2024-01-29 22:51:12,537 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] 4 == l [2024-01-29 22:51:12,537 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (4 == l) && (l == 4) [2024-01-29 22:51:12,537 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (4 == l) && (l == 4) [2024-01-29 22:51:12,537 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (4 == l) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:12,537 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (4 == l) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:12,537 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (4 == l) && (s != 4) [2024-01-29 22:51:12,537 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (4 == l) && (4 == l) [2024-01-29 22:51:12,538 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] (4 == l) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:12,538 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] 4 == l [2024-01-29 22:51:12,538 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] (4 == l) && (s == 4) [2024-01-29 22:51:12,538 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] (4 == l) && (l == 4) [2024-01-29 22:51:12,575 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 22:51:12,872 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-ext/45_monabsex1_vs.i[30633,30646] [2024-01-29 22:51:12,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:51:12,886 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:51:12,958 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-ext/45_monabsex1_vs.i[30633,30646] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:51:12,966 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 [2024-01-29 22:51:12,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:51:13,005 INFO L206 MainTranslator]: Completed translation [2024-01-29 22:51:13,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13 WrapperNode [2024-01-29 22:51:13,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 22:51:13,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 22:51:13,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 22:51:13,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 22:51:13,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,066 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2024-01-29 22:51:13,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 22:51:13,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 22:51:13,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 22:51:13,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 22:51:13,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,078 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,088 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-01-29 22:51:13,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 22:51:13,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 22:51:13,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 22:51:13,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 22:51:13,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (1/1) ... [2024-01-29 22:51:13,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:51:13,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:51:13,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-29 22:51:13,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-29 22:51:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-29 22:51:13,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-29 22:51:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 22:51:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 22:51:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-29 22:51:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 22:51:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 22:51:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 22:51:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 22:51:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 22:51:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-29 22:51:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 22:51:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 22:51:13,163 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 22:51:13,249 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 22:51:13,251 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 22:51:13,416 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 22:51:13,416 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 22:51:13,545 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 22:51:13,546 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-29 22:51:13,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:51:13 BoogieIcfgContainer [2024-01-29 22:51:13,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 22:51:13,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 22:51:13,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 22:51:13,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 22:51:13,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:51:11" (1/4) ... [2024-01-29 22:51:13,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f11facd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:51:13, skipping insertion in model container [2024-01-29 22:51:13,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:51:12" (2/4) ... [2024-01-29 22:51:13,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f11facd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:51:13, skipping insertion in model container [2024-01-29 22:51:13,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13" (3/4) ... [2024-01-29 22:51:13,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f11facd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:51:13, skipping insertion in model container [2024-01-29 22:51:13,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:51:13" (4/4) ... [2024-01-29 22:51:13,556 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2024-01-29 22:51:13,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 22:51:13,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-01-29 22:51:13,572 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 22:51:13,607 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:51:13,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 51 transitions, 106 flow [2024-01-29 22:51:13,656 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2024-01-29 22:51:13,657 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:13,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 0/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 105 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-29 22:51:13,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 51 transitions, 106 flow [2024-01-29 22:51:13,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 51 transitions, 106 flow [2024-01-29 22:51:13,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:51:13,676 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;@279c85d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:51:13,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-01-29 22:51:13,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:51:13,678 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:51:13,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:13,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:13,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:51:13,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 59 more)] === [2024-01-29 22:51:13,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:13,683 INFO L85 PathProgramCache]: Analyzing trace with hash 10354, now seen corresponding path program 1 times [2024-01-29 22:51:13,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:13,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723669405] [2024-01-29 22:51:13,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:13,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:13,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723669405] [2024-01-29 22:51:13,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723669405] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:13,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:13,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:51:13,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952936] [2024-01-29 22:51:13,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:13,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:13,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:13,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:13,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:13,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-29 22:51:13,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:13,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:13,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-29 22:51:13,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:13,936 INFO L124 PetriNetUnfolderBase]: 7/55 cut-off events. [2024-01-29 22:51:13,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:13,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 55 events. 7/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 7 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 71. Up to 26 conditions per place. [2024-01-29 22:51:13,939 INFO L140 encePairwiseOnDemand]: 31/51 looper letters, 9 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2024-01-29 22:51:13,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 80 flow [2024-01-29 22:51:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-01-29 22:51:13,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-01-29 22:51:13,951 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 106 flow. Second operand 3 states and 92 transitions. [2024-01-29 22:51:13,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 80 flow [2024-01-29 22:51:13,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 22:51:13,954 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 62 flow [2024-01-29 22:51:13,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-01-29 22:51:13,958 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -22 predicate places. [2024-01-29 22:51:13,958 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 62 flow [2024-01-29 22:51:13,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:13,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:13,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-29 22:51:13,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 22:51:13,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 59 more)] === [2024-01-29 22:51:13,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:13,960 INFO L85 PathProgramCache]: Analyzing trace with hash 982245122, now seen corresponding path program 1 times [2024-01-29 22:51:13,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:13,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357465362] [2024-01-29 22:51:13,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:13,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:13,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 22:51:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:14,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 22:51:14,006 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 22:51:14,007 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (61 of 62 remaining) [2024-01-29 22:51:14,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 62 remaining) [2024-01-29 22:51:14,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 62 remaining) [2024-01-29 22:51:14,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 62 remaining) [2024-01-29 22:51:14,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 62 remaining) [2024-01-29 22:51:14,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 62 remaining) [2024-01-29 22:51:14,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 62 remaining) [2024-01-29 22:51:14,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 62 remaining) [2024-01-29 22:51:14,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 62 remaining) [2024-01-29 22:51:14,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 62 remaining) [2024-01-29 22:51:14,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 62 remaining) [2024-01-29 22:51:14,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 62 remaining) [2024-01-29 22:51:14,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 62 remaining) [2024-01-29 22:51:14,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 62 remaining) [2024-01-29 22:51:14,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 62 remaining) [2024-01-29 22:51:14,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 62 remaining) [2024-01-29 22:51:14,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 62 remaining) [2024-01-29 22:51:14,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 62 remaining) [2024-01-29 22:51:14,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 62 remaining) [2024-01-29 22:51:14,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 62 remaining) [2024-01-29 22:51:14,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 62 remaining) [2024-01-29 22:51:14,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 62 remaining) [2024-01-29 22:51:14,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 62 remaining) [2024-01-29 22:51:14,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (38 of 62 remaining) [2024-01-29 22:51:14,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 62 remaining) [2024-01-29 22:51:14,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 62 remaining) [2024-01-29 22:51:14,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 62 remaining) [2024-01-29 22:51:14,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 62 remaining) [2024-01-29 22:51:14,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 62 remaining) [2024-01-29 22:51:14,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 62 remaining) [2024-01-29 22:51:14,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 62 remaining) [2024-01-29 22:51:14,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 62 remaining) [2024-01-29 22:51:14,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 62 remaining) [2024-01-29 22:51:14,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 62 remaining) [2024-01-29 22:51:14,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 62 remaining) [2024-01-29 22:51:14,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 62 remaining) [2024-01-29 22:51:14,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 62 remaining) [2024-01-29 22:51:14,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 62 remaining) [2024-01-29 22:51:14,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 62 remaining) [2024-01-29 22:51:14,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 62 remaining) [2024-01-29 22:51:14,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 62 remaining) [2024-01-29 22:51:14,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 62 remaining) [2024-01-29 22:51:14,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 62 remaining) [2024-01-29 22:51:14,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 62 remaining) [2024-01-29 22:51:14,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 62 remaining) [2024-01-29 22:51:14,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 62 remaining) [2024-01-29 22:51:14,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 62 remaining) [2024-01-29 22:51:14,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 62 remaining) [2024-01-29 22:51:14,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 62 remaining) [2024-01-29 22:51:14,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 62 remaining) [2024-01-29 22:51:14,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 62 remaining) [2024-01-29 22:51:14,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 62 remaining) [2024-01-29 22:51:14,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 62 remaining) [2024-01-29 22:51:14,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 62 remaining) [2024-01-29 22:51:14,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (7 of 62 remaining) [2024-01-29 22:51:14,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 62 remaining) [2024-01-29 22:51:14,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 62 remaining) [2024-01-29 22:51:14,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 62 remaining) [2024-01-29 22:51:14,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 62 remaining) [2024-01-29 22:51:14,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 62 remaining) [2024-01-29 22:51:14,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 62 remaining) [2024-01-29 22:51:14,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 62 remaining) [2024-01-29 22:51:14,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 22:51:14,022 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-29 22:51:14,024 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 22:51:14,027 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-29 22:51:14,081 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:51:14,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 96 transitions, 202 flow [2024-01-29 22:51:14,115 INFO L124 PetriNetUnfolderBase]: 0/100 cut-off events. [2024-01-29 22:51:14,116 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 22:51:14,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 100 events. 0/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 361 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2024-01-29 22:51:14,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 96 transitions, 202 flow [2024-01-29 22:51:14,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 96 transitions, 202 flow [2024-01-29 22:51:14,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:51:14,119 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;@279c85d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:51:14,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2024-01-29 22:51:14,120 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:51:14,120 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:51:14,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:14,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:14,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:51:14,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 22:51:14,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash 13426, now seen corresponding path program 1 times [2024-01-29 22:51:14,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:14,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279995948] [2024-01-29 22:51:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:14,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:14,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:14,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279995948] [2024-01-29 22:51:14,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279995948] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:14,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:14,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:51:14,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552375783] [2024-01-29 22:51:14,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:14,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:14,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:14,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:14,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:14,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 96 [2024-01-29 22:51:14,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:14,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:14,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 96 [2024-01-29 22:51:14,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:14,275 INFO L124 PetriNetUnfolderBase]: 175/599 cut-off events. [2024-01-29 22:51:14,277 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-29 22:51:14,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 599 events. 175/599 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3965 event pairs, 175 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 720. Up to 322 conditions per place. [2024-01-29 22:51:14,285 INFO L140 encePairwiseOnDemand]: 60/96 looper letters, 17 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-01-29 22:51:14,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 148 flow [2024-01-29 22:51:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-01-29 22:51:14,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-01-29 22:51:14,291 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 202 flow. Second operand 3 states and 176 transitions. [2024-01-29 22:51:14,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 148 flow [2024-01-29 22:51:14,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 22:51:14,293 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 114 flow [2024-01-29 22:51:14,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-01-29 22:51:14,294 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -44 predicate places. [2024-01-29 22:51:14,294 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 114 flow [2024-01-29 22:51:14,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:14,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:14,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 22:51:14,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 22:51:14,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 22:51:14,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:14,297 INFO L85 PathProgramCache]: Analyzing trace with hash -472665912, now seen corresponding path program 1 times [2024-01-29 22:51:14,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:14,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086159533] [2024-01-29 22:51:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:14,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:14,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:14,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086159533] [2024-01-29 22:51:14,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086159533] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:14,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:14,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:14,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979361545] [2024-01-29 22:51:14,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:14,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:14,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:14,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:14,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:14,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 96 [2024-01-29 22:51:14,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:14,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:14,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 96 [2024-01-29 22:51:14,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:14,539 INFO L124 PetriNetUnfolderBase]: 199/649 cut-off events. [2024-01-29 22:51:14,539 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-01-29 22:51:14,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 649 events. 199/649 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4252 event pairs, 105 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 1038. Up to 336 conditions per place. [2024-01-29 22:51:14,544 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 28 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-01-29 22:51:14,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 195 flow [2024-01-29 22:51:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:14,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-01-29 22:51:14,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-01-29 22:51:14,561 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 114 flow. Second operand 4 states and 188 transitions. [2024-01-29 22:51:14,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 195 flow [2024-01-29 22:51:14,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 191 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:14,563 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 110 flow [2024-01-29 22:51:14,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-01-29 22:51:14,565 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -45 predicate places. [2024-01-29 22:51:14,565 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 110 flow [2024-01-29 22:51:14,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:14,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:14,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:14,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 22:51:14,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 22:51:14,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:14,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1034607786, now seen corresponding path program 1 times [2024-01-29 22:51:14,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:14,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442931207] [2024-01-29 22:51:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:14,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:14,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442931207] [2024-01-29 22:51:14,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442931207] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:14,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:14,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:51:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061624025] [2024-01-29 22:51:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:14,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:14,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:14,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 96 [2024-01-29 22:51:14,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:14,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:14,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 96 [2024-01-29 22:51:14,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:14,705 INFO L124 PetriNetUnfolderBase]: 319/669 cut-off events. [2024-01-29 22:51:14,705 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-01-29 22:51:14,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 669 events. 319/669 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3973 event pairs, 31 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 1276. Up to 504 conditions per place. [2024-01-29 22:51:14,709 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 33 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2024-01-29 22:51:14,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 193 flow [2024-01-29 22:51:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-01-29 22:51:14,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-01-29 22:51:14,711 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 110 flow. Second operand 3 states and 122 transitions. [2024-01-29 22:51:14,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 193 flow [2024-01-29 22:51:14,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:14,713 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 101 flow [2024-01-29 22:51:14,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-01-29 22:51:14,714 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -49 predicate places. [2024-01-29 22:51:14,714 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 101 flow [2024-01-29 22:51:14,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:14,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:14,715 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2024-01-29 22:51:14,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 22:51:14,715 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 89 more)] === [2024-01-29 22:51:14,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:14,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1032532623, now seen corresponding path program 1 times [2024-01-29 22:51:14,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:14,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034465742] [2024-01-29 22:51:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:14,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:14,738 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 22:51:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:14,750 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 22:51:14,752 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 22:51:14,752 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (91 of 92 remaining) [2024-01-29 22:51:14,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (90 of 92 remaining) [2024-01-29 22:51:14,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (89 of 92 remaining) [2024-01-29 22:51:14,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (88 of 92 remaining) [2024-01-29 22:51:14,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (87 of 92 remaining) [2024-01-29 22:51:14,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (86 of 92 remaining) [2024-01-29 22:51:14,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (85 of 92 remaining) [2024-01-29 22:51:14,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (84 of 92 remaining) [2024-01-29 22:51:14,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (83 of 92 remaining) [2024-01-29 22:51:14,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (82 of 92 remaining) [2024-01-29 22:51:14,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (81 of 92 remaining) [2024-01-29 22:51:14,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (80 of 92 remaining) [2024-01-29 22:51:14,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (79 of 92 remaining) [2024-01-29 22:51:14,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (78 of 92 remaining) [2024-01-29 22:51:14,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (77 of 92 remaining) [2024-01-29 22:51:14,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (76 of 92 remaining) [2024-01-29 22:51:14,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (75 of 92 remaining) [2024-01-29 22:51:14,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (74 of 92 remaining) [2024-01-29 22:51:14,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (73 of 92 remaining) [2024-01-29 22:51:14,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (72 of 92 remaining) [2024-01-29 22:51:14,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (71 of 92 remaining) [2024-01-29 22:51:14,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (70 of 92 remaining) [2024-01-29 22:51:14,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (69 of 92 remaining) [2024-01-29 22:51:14,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (68 of 92 remaining) [2024-01-29 22:51:14,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (67 of 92 remaining) [2024-01-29 22:51:14,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (66 of 92 remaining) [2024-01-29 22:51:14,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (65 of 92 remaining) [2024-01-29 22:51:14,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (64 of 92 remaining) [2024-01-29 22:51:14,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (63 of 92 remaining) [2024-01-29 22:51:14,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (62 of 92 remaining) [2024-01-29 22:51:14,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (61 of 92 remaining) [2024-01-29 22:51:14,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 92 remaining) [2024-01-29 22:51:14,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 92 remaining) [2024-01-29 22:51:14,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 92 remaining) [2024-01-29 22:51:14,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 92 remaining) [2024-01-29 22:51:14,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 92 remaining) [2024-01-29 22:51:14,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 92 remaining) [2024-01-29 22:51:14,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 92 remaining) [2024-01-29 22:51:14,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 92 remaining) [2024-01-29 22:51:14,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 92 remaining) [2024-01-29 22:51:14,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 92 remaining) [2024-01-29 22:51:14,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 92 remaining) [2024-01-29 22:51:14,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 92 remaining) [2024-01-29 22:51:14,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 92 remaining) [2024-01-29 22:51:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 92 remaining) [2024-01-29 22:51:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 92 remaining) [2024-01-29 22:51:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 92 remaining) [2024-01-29 22:51:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 92 remaining) [2024-01-29 22:51:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 92 remaining) [2024-01-29 22:51:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 92 remaining) [2024-01-29 22:51:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 92 remaining) [2024-01-29 22:51:14,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 92 remaining) [2024-01-29 22:51:14,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 92 remaining) [2024-01-29 22:51:14,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 92 remaining) [2024-01-29 22:51:14,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (37 of 92 remaining) [2024-01-29 22:51:14,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 92 remaining) [2024-01-29 22:51:14,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 92 remaining) [2024-01-29 22:51:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 92 remaining) [2024-01-29 22:51:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 92 remaining) [2024-01-29 22:51:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 92 remaining) [2024-01-29 22:51:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 92 remaining) [2024-01-29 22:51:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 92 remaining) [2024-01-29 22:51:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 92 remaining) [2024-01-29 22:51:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 92 remaining) [2024-01-29 22:51:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 92 remaining) [2024-01-29 22:51:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 92 remaining) [2024-01-29 22:51:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 92 remaining) [2024-01-29 22:51:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 92 remaining) [2024-01-29 22:51:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 92 remaining) [2024-01-29 22:51:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 92 remaining) [2024-01-29 22:51:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 92 remaining) [2024-01-29 22:51:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 92 remaining) [2024-01-29 22:51:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 92 remaining) [2024-01-29 22:51:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 92 remaining) [2024-01-29 22:51:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 92 remaining) [2024-01-29 22:51:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 92 remaining) [2024-01-29 22:51:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 92 remaining) [2024-01-29 22:51:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 92 remaining) [2024-01-29 22:51:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 92 remaining) [2024-01-29 22:51:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 92 remaining) [2024-01-29 22:51:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 92 remaining) [2024-01-29 22:51:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 92 remaining) [2024-01-29 22:51:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 92 remaining) [2024-01-29 22:51:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 92 remaining) [2024-01-29 22:51:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (7 of 92 remaining) [2024-01-29 22:51:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 92 remaining) [2024-01-29 22:51:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 92 remaining) [2024-01-29 22:51:14,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 92 remaining) [2024-01-29 22:51:14,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 92 remaining) [2024-01-29 22:51:14,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 92 remaining) [2024-01-29 22:51:14,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 92 remaining) [2024-01-29 22:51:14,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 92 remaining) [2024-01-29 22:51:14,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 22:51:14,777 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-29 22:51:14,777 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 22:51:14,777 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-29 22:51:14,815 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:51:14,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 141 transitions, 300 flow [2024-01-29 22:51:14,837 INFO L124 PetriNetUnfolderBase]: 0/147 cut-off events. [2024-01-29 22:51:14,837 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-29 22:51:14,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 0/147 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 691 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2024-01-29 22:51:14,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 141 transitions, 300 flow [2024-01-29 22:51:14,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 141 transitions, 300 flow [2024-01-29 22:51:14,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:51:14,844 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;@279c85d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:51:14,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 122 error locations. [2024-01-29 22:51:14,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:51:14,845 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:51:14,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:14,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:14,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:51:14,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-29 22:51:14,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:14,846 INFO L85 PathProgramCache]: Analyzing trace with hash 17938, now seen corresponding path program 1 times [2024-01-29 22:51:14,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:14,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760140862] [2024-01-29 22:51:14,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:14,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:14,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:14,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760140862] [2024-01-29 22:51:14,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760140862] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:14,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:14,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:51:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412079159] [2024-01-29 22:51:14,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:14,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:14,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:14,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:14,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2024-01-29 22:51:14,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:14,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:14,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2024-01-29 22:51:14,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:15,338 INFO L124 PetriNetUnfolderBase]: 2415/5859 cut-off events. [2024-01-29 22:51:15,338 INFO L125 PetriNetUnfolderBase]: For 488/488 co-relation queries the response was YES. [2024-01-29 22:51:15,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9732 conditions, 5859 events. 2415/5859 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 55606 event pairs, 2415 based on Foata normal form. 0/3442 useless extension candidates. Maximal degree in co-relation 1398. Up to 3586 conditions per place. [2024-01-29 22:51:15,413 INFO L140 encePairwiseOnDemand]: 89/141 looper letters, 25 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-01-29 22:51:15,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 73 transitions, 218 flow [2024-01-29 22:51:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2024-01-29 22:51:15,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6146572104018913 [2024-01-29 22:51:15,415 INFO L175 Difference]: Start difference. First operand has 148 places, 141 transitions, 300 flow. Second operand 3 states and 260 transitions. [2024-01-29 22:51:15,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 73 transitions, 218 flow [2024-01-29 22:51:15,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 73 transitions, 216 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-29 22:51:15,418 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 166 flow [2024-01-29 22:51:15,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2024-01-29 22:51:15,420 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -66 predicate places. [2024-01-29 22:51:15,420 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 166 flow [2024-01-29 22:51:15,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:15,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 22:51:15,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 22:51:15,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-29 22:51:15,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash -596323628, now seen corresponding path program 1 times [2024-01-29 22:51:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:15,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927132409] [2024-01-29 22:51:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:15,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:15,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:15,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927132409] [2024-01-29 22:51:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927132409] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:15,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:15,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123806915] [2024-01-29 22:51:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:15,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:15,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2024-01-29 22:51:15,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 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) [2024-01-29 22:51:15,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:15,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2024-01-29 22:51:15,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:15,912 INFO L124 PetriNetUnfolderBase]: 2735/6081 cut-off events. [2024-01-29 22:51:15,913 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-01-29 22:51:15,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10386 conditions, 6081 events. 2735/6081 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 55266 event pairs, 175 based on Foata normal form. 0/3614 useless extension candidates. Maximal degree in co-relation 10374. Up to 3728 conditions per place. [2024-01-29 22:51:15,956 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 44 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-01-29 22:51:15,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 89 transitions, 300 flow [2024-01-29 22:51:15,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:15,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2024-01-29 22:51:15,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-01-29 22:51:15,958 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 166 flow. Second operand 4 states and 284 transitions. [2024-01-29 22:51:15,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 89 transitions, 300 flow [2024-01-29 22:51:15,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 89 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:15,961 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 162 flow [2024-01-29 22:51:15,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-01-29 22:51:15,962 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -67 predicate places. [2024-01-29 22:51:15,962 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 162 flow [2024-01-29 22:51:15,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 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) [2024-01-29 22:51:15,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:15,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:15,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 22:51:15,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-29 22:51:15,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:15,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1836335786, now seen corresponding path program 1 times [2024-01-29 22:51:15,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:15,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155384509] [2024-01-29 22:51:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:15,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:15,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155384509] [2024-01-29 22:51:15,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155384509] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:15,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:15,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:51:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696577269] [2024-01-29 22:51:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:15,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:16,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 141 [2024-01-29 22:51:16,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:16,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:16,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 141 [2024-01-29 22:51:16,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:16,536 INFO L124 PetriNetUnfolderBase]: 4335/7229 cut-off events. [2024-01-29 22:51:16,537 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2024-01-29 22:51:16,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13999 conditions, 7229 events. 4335/7229 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 54668 event pairs, 495 based on Foata normal form. 0/4988 useless extension candidates. Maximal degree in co-relation 13980. Up to 5592 conditions per place. [2024-01-29 22:51:16,576 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 49 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2024-01-29 22:51:16,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 298 flow [2024-01-29 22:51:16,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-01-29 22:51:16,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-01-29 22:51:16,578 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 162 flow. Second operand 3 states and 198 transitions. [2024-01-29 22:51:16,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 298 flow [2024-01-29 22:51:16,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:16,580 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 153 flow [2024-01-29 22:51:16,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-01-29 22:51:16,581 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -71 predicate places. [2024-01-29 22:51:16,581 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 153 flow [2024-01-29 22:51:16,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:16,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:16,582 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:16,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 22:51:16,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-29 22:51:16,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1838365099, now seen corresponding path program 1 times [2024-01-29 22:51:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:16,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179449400] [2024-01-29 22:51:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:16,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 22:51:16,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:16,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179449400] [2024-01-29 22:51:16,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179449400] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:16,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:16,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:16,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959140832] [2024-01-29 22:51:16,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:16,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:16,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:16,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:16,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:16,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2024-01-29 22:51:16,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 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) [2024-01-29 22:51:16,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:16,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2024-01-29 22:51:16,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:17,147 INFO L124 PetriNetUnfolderBase]: 2733/6345 cut-off events. [2024-01-29 22:51:17,147 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-01-29 22:51:17,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10806 conditions, 6345 events. 2733/6345 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 59720 event pairs, 847 based on Foata normal form. 0/3848 useless extension candidates. Maximal degree in co-relation 10788. Up to 3696 conditions per place. [2024-01-29 22:51:17,180 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 50 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-01-29 22:51:17,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 310 flow [2024-01-29 22:51:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2024-01-29 22:51:17,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-01-29 22:51:17,182 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 153 flow. Second operand 4 states and 290 transitions. [2024-01-29 22:51:17,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 310 flow [2024-01-29 22:51:17,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:51:17,186 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 152 flow [2024-01-29 22:51:17,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-01-29 22:51:17,188 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -71 predicate places. [2024-01-29 22:51:17,188 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 152 flow [2024-01-29 22:51:17,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 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) [2024-01-29 22:51:17,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:17,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:17,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 22:51:17,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-29 22:51:17,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:17,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1091833878, now seen corresponding path program 1 times [2024-01-29 22:51:17,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:17,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130390500] [2024-01-29 22:51:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:17,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:17,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130390500] [2024-01-29 22:51:17,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130390500] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:17,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:17,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:17,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887509838] [2024-01-29 22:51:17,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:17,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:17,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:17,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 141 [2024-01-29 22:51:17,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:17,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:17,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 141 [2024-01-29 22:51:17,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:17,746 INFO L124 PetriNetUnfolderBase]: 4015/6466 cut-off events. [2024-01-29 22:51:17,746 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2024-01-29 22:51:17,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13048 conditions, 6466 events. 4015/6466 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 46841 event pairs, 495 based on Foata normal form. 0/4664 useless extension candidates. Maximal degree in co-relation 11603. Up to 4660 conditions per place. [2024-01-29 22:51:17,781 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 64 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-01-29 22:51:17,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 368 flow [2024-01-29 22:51:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2024-01-29 22:51:17,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219858156028369 [2024-01-29 22:51:17,783 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 152 flow. Second operand 4 states and 238 transitions. [2024-01-29 22:51:17,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 368 flow [2024-01-29 22:51:17,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 95 transitions, 361 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:17,786 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 145 flow [2024-01-29 22:51:17,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=145, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2024-01-29 22:51:17,787 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -74 predicate places. [2024-01-29 22:51:17,787 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 145 flow [2024-01-29 22:51:17,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:17,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:17,787 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:17,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-29 22:51:17,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-29 22:51:17,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:17,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1440666091, now seen corresponding path program 1 times [2024-01-29 22:51:17,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:17,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225389155] [2024-01-29 22:51:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:17,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:17,797 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 22:51:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:17,811 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 22:51:17,811 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 22:51:17,811 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (121 of 122 remaining) [2024-01-29 22:51:17,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (120 of 122 remaining) [2024-01-29 22:51:17,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (119 of 122 remaining) [2024-01-29 22:51:17,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (118 of 122 remaining) [2024-01-29 22:51:17,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (117 of 122 remaining) [2024-01-29 22:51:17,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (116 of 122 remaining) [2024-01-29 22:51:17,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (115 of 122 remaining) [2024-01-29 22:51:17,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (114 of 122 remaining) [2024-01-29 22:51:17,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (113 of 122 remaining) [2024-01-29 22:51:17,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (112 of 122 remaining) [2024-01-29 22:51:17,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (111 of 122 remaining) [2024-01-29 22:51:17,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (110 of 122 remaining) [2024-01-29 22:51:17,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (109 of 122 remaining) [2024-01-29 22:51:17,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (108 of 122 remaining) [2024-01-29 22:51:17,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (107 of 122 remaining) [2024-01-29 22:51:17,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (106 of 122 remaining) [2024-01-29 22:51:17,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (105 of 122 remaining) [2024-01-29 22:51:17,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (104 of 122 remaining) [2024-01-29 22:51:17,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (103 of 122 remaining) [2024-01-29 22:51:17,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (102 of 122 remaining) [2024-01-29 22:51:17,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (101 of 122 remaining) [2024-01-29 22:51:17,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (100 of 122 remaining) [2024-01-29 22:51:17,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (99 of 122 remaining) [2024-01-29 22:51:17,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (98 of 122 remaining) [2024-01-29 22:51:17,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (97 of 122 remaining) [2024-01-29 22:51:17,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (96 of 122 remaining) [2024-01-29 22:51:17,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (95 of 122 remaining) [2024-01-29 22:51:17,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (94 of 122 remaining) [2024-01-29 22:51:17,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (93 of 122 remaining) [2024-01-29 22:51:17,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (92 of 122 remaining) [2024-01-29 22:51:17,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (91 of 122 remaining) [2024-01-29 22:51:17,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (90 of 122 remaining) [2024-01-29 22:51:17,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (89 of 122 remaining) [2024-01-29 22:51:17,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (88 of 122 remaining) [2024-01-29 22:51:17,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (87 of 122 remaining) [2024-01-29 22:51:17,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (86 of 122 remaining) [2024-01-29 22:51:17,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (85 of 122 remaining) [2024-01-29 22:51:17,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (84 of 122 remaining) [2024-01-29 22:51:17,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (83 of 122 remaining) [2024-01-29 22:51:17,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (82 of 122 remaining) [2024-01-29 22:51:17,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (81 of 122 remaining) [2024-01-29 22:51:17,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (80 of 122 remaining) [2024-01-29 22:51:17,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (79 of 122 remaining) [2024-01-29 22:51:17,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (78 of 122 remaining) [2024-01-29 22:51:17,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (77 of 122 remaining) [2024-01-29 22:51:17,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (76 of 122 remaining) [2024-01-29 22:51:17,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (75 of 122 remaining) [2024-01-29 22:51:17,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (74 of 122 remaining) [2024-01-29 22:51:17,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (73 of 122 remaining) [2024-01-29 22:51:17,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (72 of 122 remaining) [2024-01-29 22:51:17,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (71 of 122 remaining) [2024-01-29 22:51:17,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (70 of 122 remaining) [2024-01-29 22:51:17,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (69 of 122 remaining) [2024-01-29 22:51:17,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (68 of 122 remaining) [2024-01-29 22:51:17,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (67 of 122 remaining) [2024-01-29 22:51:17,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (66 of 122 remaining) [2024-01-29 22:51:17,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (65 of 122 remaining) [2024-01-29 22:51:17,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (64 of 122 remaining) [2024-01-29 22:51:17,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (63 of 122 remaining) [2024-01-29 22:51:17,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (62 of 122 remaining) [2024-01-29 22:51:17,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (61 of 122 remaining) [2024-01-29 22:51:17,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 122 remaining) [2024-01-29 22:51:17,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 122 remaining) [2024-01-29 22:51:17,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 122 remaining) [2024-01-29 22:51:17,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 122 remaining) [2024-01-29 22:51:17,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 122 remaining) [2024-01-29 22:51:17,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 122 remaining) [2024-01-29 22:51:17,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 122 remaining) [2024-01-29 22:51:17,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 122 remaining) [2024-01-29 22:51:17,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 122 remaining) [2024-01-29 22:51:17,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 122 remaining) [2024-01-29 22:51:17,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 122 remaining) [2024-01-29 22:51:17,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 122 remaining) [2024-01-29 22:51:17,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 122 remaining) [2024-01-29 22:51:17,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 122 remaining) [2024-01-29 22:51:17,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 122 remaining) [2024-01-29 22:51:17,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 122 remaining) [2024-01-29 22:51:17,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 122 remaining) [2024-01-29 22:51:17,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 122 remaining) [2024-01-29 22:51:17,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 122 remaining) [2024-01-29 22:51:17,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 122 remaining) [2024-01-29 22:51:17,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 122 remaining) [2024-01-29 22:51:17,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 122 remaining) [2024-01-29 22:51:17,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 122 remaining) [2024-01-29 22:51:17,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (37 of 122 remaining) [2024-01-29 22:51:17,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 122 remaining) [2024-01-29 22:51:17,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 122 remaining) [2024-01-29 22:51:17,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 122 remaining) [2024-01-29 22:51:17,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 122 remaining) [2024-01-29 22:51:17,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 122 remaining) [2024-01-29 22:51:17,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 122 remaining) [2024-01-29 22:51:17,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 122 remaining) [2024-01-29 22:51:17,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 122 remaining) [2024-01-29 22:51:17,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 122 remaining) [2024-01-29 22:51:17,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 122 remaining) [2024-01-29 22:51:17,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 122 remaining) [2024-01-29 22:51:17,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 122 remaining) [2024-01-29 22:51:17,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 122 remaining) [2024-01-29 22:51:17,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 122 remaining) [2024-01-29 22:51:17,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 122 remaining) [2024-01-29 22:51:17,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 122 remaining) [2024-01-29 22:51:17,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 122 remaining) [2024-01-29 22:51:17,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 122 remaining) [2024-01-29 22:51:17,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 122 remaining) [2024-01-29 22:51:17,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 122 remaining) [2024-01-29 22:51:17,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 122 remaining) [2024-01-29 22:51:17,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 122 remaining) [2024-01-29 22:51:17,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 122 remaining) [2024-01-29 22:51:17,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 122 remaining) [2024-01-29 22:51:17,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 122 remaining) [2024-01-29 22:51:17,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 122 remaining) [2024-01-29 22:51:17,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 122 remaining) [2024-01-29 22:51:17,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 122 remaining) [2024-01-29 22:51:17,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 122 remaining) [2024-01-29 22:51:17,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (7 of 122 remaining) [2024-01-29 22:51:17,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 122 remaining) [2024-01-29 22:51:17,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 122 remaining) [2024-01-29 22:51:17,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 122 remaining) [2024-01-29 22:51:17,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 122 remaining) [2024-01-29 22:51:17,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 122 remaining) [2024-01-29 22:51:17,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 122 remaining) [2024-01-29 22:51:17,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 122 remaining) [2024-01-29 22:51:17,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-29 22:51:17,834 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-01-29 22:51:17,834 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 22:51:17,835 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-29 22:51:17,865 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:51:17,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 186 transitions, 400 flow [2024-01-29 22:51:17,881 INFO L124 PetriNetUnfolderBase]: 0/194 cut-off events. [2024-01-29 22:51:17,881 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-29 22:51:17,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 194 events. 0/194 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1043 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2024-01-29 22:51:17,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 186 transitions, 400 flow [2024-01-29 22:51:17,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 186 transitions, 400 flow [2024-01-29 22:51:17,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:51:17,885 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;@279c85d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:51:17,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 152 error locations. [2024-01-29 22:51:17,885 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:51:17,885 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:51:17,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:17,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:17,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:51:17,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 149 more)] === [2024-01-29 22:51:17,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash 23890, now seen corresponding path program 1 times [2024-01-29 22:51:17,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:17,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723894370] [2024-01-29 22:51:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:17,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:17,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:17,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723894370] [2024-01-29 22:51:17,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723894370] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:17,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:17,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:51:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294915274] [2024-01-29 22:51:17,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:17,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:17,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 186 [2024-01-29 22:51:17,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 186 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 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) [2024-01-29 22:51:17,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:17,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 186 [2024-01-29 22:51:17,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:21,344 INFO L124 PetriNetUnfolderBase]: 27503/55107 cut-off events. [2024-01-29 22:51:21,345 INFO L125 PetriNetUnfolderBase]: For 6920/6920 co-relation queries the response was YES. [2024-01-29 22:51:21,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94821 conditions, 55107 events. 27503/55107 cut-off events. For 6920/6920 co-relation queries the response was YES. Maximal size of possible extension queue 2662. Compared 621744 event pairs, 27503 based on Foata normal form. 0/32206 useless extension candidates. Maximal degree in co-relation 9796. Up to 36866 conditions per place. [2024-01-29 22:51:21,867 INFO L140 encePairwiseOnDemand]: 118/186 looper letters, 33 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-01-29 22:51:21,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 290 flow [2024-01-29 22:51:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2024-01-29 22:51:21,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6164874551971327 [2024-01-29 22:51:21,870 INFO L175 Difference]: Start difference. First operand has 195 places, 186 transitions, 400 flow. Second operand 3 states and 344 transitions. [2024-01-29 22:51:21,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 290 flow [2024-01-29 22:51:21,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 96 transitions, 284 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-29 22:51:21,875 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 218 flow [2024-01-29 22:51:21,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2024-01-29 22:51:21,876 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -88 predicate places. [2024-01-29 22:51:21,876 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 218 flow [2024-01-29 22:51:21,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 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) [2024-01-29 22:51:21,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:21,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 22:51:21,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-29 22:51:21,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 149 more)] === [2024-01-29 22:51:21,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:21,878 INFO L85 PathProgramCache]: Analyzing trace with hash 611275584, now seen corresponding path program 1 times [2024-01-29 22:51:21,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:21,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625377843] [2024-01-29 22:51:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:21,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:21,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:21,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625377843] [2024-01-29 22:51:21,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625377843] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:21,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:21,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:21,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298630052] [2024-01-29 22:51:21,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:21,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:21,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:21,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:21,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:21,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 186 [2024-01-29 22:51:21,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:21,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:21,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 186 [2024-01-29 22:51:21,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:25,751 INFO L124 PetriNetUnfolderBase]: 31087/62213 cut-off events. [2024-01-29 22:51:25,752 INFO L125 PetriNetUnfolderBase]: For 2149/2149 co-relation queries the response was YES. [2024-01-29 22:51:25,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105815 conditions, 62213 events. 31087/62213 cut-off events. For 2149/2149 co-relation queries the response was YES. Maximal size of possible extension queue 2943. Compared 707997 event pairs, 24661 based on Foata normal form. 0/36804 useless extension candidates. Maximal degree in co-relation 105802. Up to 38032 conditions per place. [2024-01-29 22:51:26,609 INFO L140 encePairwiseOnDemand]: 182/186 looper letters, 60 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2024-01-29 22:51:26,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 120 transitions, 405 flow [2024-01-29 22:51:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:26,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2024-01-29 22:51:26,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-01-29 22:51:26,611 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 218 flow. Second operand 4 states and 380 transitions. [2024-01-29 22:51:26,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 120 transitions, 405 flow [2024-01-29 22:51:26,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 120 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:26,614 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 214 flow [2024-01-29 22:51:26,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-01-29 22:51:26,615 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -89 predicate places. [2024-01-29 22:51:26,615 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 214 flow [2024-01-29 22:51:26,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:26,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:26,616 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:26,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-29 22:51:26,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 149 more)] === [2024-01-29 22:51:26,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash -977995731, now seen corresponding path program 1 times [2024-01-29 22:51:26,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:26,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43580825] [2024-01-29 22:51:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:26,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 22:51:26,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:26,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43580825] [2024-01-29 22:51:26,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43580825] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:26,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:26,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:26,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330909671] [2024-01-29 22:51:26,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:26,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:26,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:26,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 186 [2024-01-29 22:51:26,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:26,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:26,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 186 [2024-01-29 22:51:26,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:29,951 INFO L124 PetriNetUnfolderBase]: 31085/57297 cut-off events. [2024-01-29 22:51:29,951 INFO L125 PetriNetUnfolderBase]: For 2109/2109 co-relation queries the response was YES. [2024-01-29 22:51:30,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100892 conditions, 57297 events. 31085/57297 cut-off events. For 2109/2109 co-relation queries the response was YES. Maximal size of possible extension queue 2754. Compared 600974 event pairs, 9375 based on Foata normal form. 0/34200 useless extension candidates. Maximal degree in co-relation 100872. Up to 38000 conditions per place. [2024-01-29 22:51:30,332 INFO L140 encePairwiseOnDemand]: 182/186 looper letters, 66 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2024-01-29 22:51:30,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 124 transitions, 420 flow [2024-01-29 22:51:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2024-01-29 22:51:30,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188172043010753 [2024-01-29 22:51:30,334 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 214 flow. Second operand 4 states and 386 transitions. [2024-01-29 22:51:30,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 124 transitions, 420 flow [2024-01-29 22:51:30,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 124 transitions, 417 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:30,337 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 211 flow [2024-01-29 22:51:30,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-01-29 22:51:30,338 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -90 predicate places. [2024-01-29 22:51:30,338 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 211 flow [2024-01-29 22:51:30,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:30,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:30,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:30,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-29 22:51:30,339 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 149 more)] === [2024-01-29 22:51:30,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash -974655614, now seen corresponding path program 1 times [2024-01-29 22:51:30,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:30,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394695785] [2024-01-29 22:51:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:30,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:30,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:30,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394695785] [2024-01-29 22:51:30,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394695785] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:30,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:30,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:51:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292509312] [2024-01-29 22:51:30,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:30,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:30,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:30,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:30,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 186 [2024-01-29 22:51:30,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:30,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:30,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 186 [2024-01-29 22:51:30,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:34,618 INFO L124 PetriNetUnfolderBase]: 49007/72273 cut-off events. [2024-01-29 22:51:34,619 INFO L125 PetriNetUnfolderBase]: For 3462/3462 co-relation queries the response was YES. [2024-01-29 22:51:34,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140755 conditions, 72273 events. 49007/72273 cut-off events. For 3462/3462 co-relation queries the response was YES. Maximal size of possible extension queue 3388. Compared 599500 event pairs, 5999 based on Foata normal form. 0/48066 useless extension candidates. Maximal degree in co-relation 140736. Up to 57048 conditions per place. [2024-01-29 22:51:35,444 INFO L140 encePairwiseOnDemand]: 181/186 looper letters, 65 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2024-01-29 22:51:35,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 113 transitions, 402 flow [2024-01-29 22:51:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2024-01-29 22:51:35,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4910394265232975 [2024-01-29 22:51:35,449 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 211 flow. Second operand 3 states and 274 transitions. [2024-01-29 22:51:35,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 113 transitions, 402 flow [2024-01-29 22:51:35,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 113 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:35,453 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 202 flow [2024-01-29 22:51:35,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2024-01-29 22:51:35,453 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -94 predicate places. [2024-01-29 22:51:35,454 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 202 flow [2024-01-29 22:51:35,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:35,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:35,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:35,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-29 22:51:35,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 149 more)] === [2024-01-29 22:51:35,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash -149552092, now seen corresponding path program 1 times [2024-01-29 22:51:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097304995] [2024-01-29 22:51:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:35,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:35,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097304995] [2024-01-29 22:51:35,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097304995] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:35,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:35,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753408890] [2024-01-29 22:51:35,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:35,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:35,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 186 [2024-01-29 22:51:35,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:35,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:35,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 186 [2024-01-29 22:51:35,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:39,335 INFO L124 PetriNetUnfolderBase]: 45423/65178 cut-off events. [2024-01-29 22:51:39,336 INFO L125 PetriNetUnfolderBase]: For 3205/3205 co-relation queries the response was YES. [2024-01-29 22:51:39,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131012 conditions, 65178 events. 45423/65178 cut-off events. For 3205/3205 co-relation queries the response was YES. Maximal size of possible extension queue 3036. Compared 514347 event pairs, 5999 based on Foata normal form. 0/44930 useless extension candidates. Maximal degree in co-relation 117779. Up to 47540 conditions per place. [2024-01-29 22:51:39,839 INFO L140 encePairwiseOnDemand]: 180/186 looper letters, 88 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2024-01-29 22:51:39,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 134 transitions, 504 flow [2024-01-29 22:51:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:39,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2024-01-29 22:51:39,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596774193548387 [2024-01-29 22:51:39,841 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 202 flow. Second operand 4 states and 342 transitions. [2024-01-29 22:51:39,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 134 transitions, 504 flow [2024-01-29 22:51:40,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 134 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:51:40,059 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 197 flow [2024-01-29 22:51:40,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-01-29 22:51:40,060 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -96 predicate places. [2024-01-29 22:51:40,060 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 197 flow [2024-01-29 22:51:40,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:40,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:40,060 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:40,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-29 22:51:40,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 149 more)] === [2024-01-29 22:51:40,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:40,061 INFO L85 PathProgramCache]: Analyzing trace with hash 739271579, now seen corresponding path program 1 times [2024-01-29 22:51:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:40,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244474356] [2024-01-29 22:51:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:40,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-29 22:51:40,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:40,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244474356] [2024-01-29 22:51:40,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244474356] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:40,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:40,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:40,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735413300] [2024-01-29 22:51:40,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:40,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:40,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:40,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:40,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 186 [2024-01-29 22:51:40,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:40,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:40,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 186 [2024-01-29 22:51:40,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:42,665 INFO L124 PetriNetUnfolderBase]: 22963/44713 cut-off events. [2024-01-29 22:51:42,665 INFO L125 PetriNetUnfolderBase]: For 4553/4553 co-relation queries the response was YES. [2024-01-29 22:51:42,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80975 conditions, 44713 events. 22963/44713 cut-off events. For 4553/4553 co-relation queries the response was YES. Maximal size of possible extension queue 2136. Compared 474711 event pairs, 5167 based on Foata normal form. 0/28346 useless extension candidates. Maximal degree in co-relation 80956. Up to 27936 conditions per place. [2024-01-29 22:51:43,139 INFO L140 encePairwiseOnDemand]: 182/186 looper letters, 66 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2024-01-29 22:51:43,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 116 transitions, 412 flow [2024-01-29 22:51:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:43,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2024-01-29 22:51:43,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188172043010753 [2024-01-29 22:51:43,141 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 197 flow. Second operand 4 states and 386 transitions. [2024-01-29 22:51:43,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 116 transitions, 412 flow [2024-01-29 22:51:43,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 116 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:43,146 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 194 flow [2024-01-29 22:51:43,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2024-01-29 22:51:43,147 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -97 predicate places. [2024-01-29 22:51:43,147 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 194 flow [2024-01-29 22:51:43,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:43,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:43,147 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:43,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-29 22:51:43,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 149 more)] === [2024-01-29 22:51:43,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash 743969455, now seen corresponding path program 1 times [2024-01-29 22:51:43,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:43,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553614553] [2024-01-29 22:51:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 22:51:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:43,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553614553] [2024-01-29 22:51:43,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553614553] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:43,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:43,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:51:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618163033] [2024-01-29 22:51:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:43,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:43,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:43,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:43,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 186 [2024-01-29 22:51:43,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:43,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:43,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 186 [2024-01-29 22:51:43,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:46,202 INFO L124 PetriNetUnfolderBase]: 36235/53605 cut-off events. [2024-01-29 22:51:46,203 INFO L125 PetriNetUnfolderBase]: For 2762/2762 co-relation queries the response was YES. [2024-01-29 22:51:46,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108605 conditions, 53605 events. 36235/53605 cut-off events. For 2762/2762 co-relation queries the response was YES. Maximal size of possible extension queue 2514. Compared 430595 event pairs, 4435 based on Foata normal form. 0/38088 useless extension candidates. Maximal degree in co-relation 108586. Up to 42312 conditions per place. [2024-01-29 22:51:46,570 INFO L140 encePairwiseOnDemand]: 181/186 looper letters, 60 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2024-01-29 22:51:46,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 100 transitions, 366 flow [2024-01-29 22:51:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2024-01-29 22:51:46,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.482078853046595 [2024-01-29 22:51:46,572 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 194 flow. Second operand 3 states and 269 transitions. [2024-01-29 22:51:46,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 100 transitions, 366 flow [2024-01-29 22:51:46,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 100 transitions, 361 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:46,575 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 185 flow [2024-01-29 22:51:46,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2024-01-29 22:51:46,576 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -101 predicate places. [2024-01-29 22:51:46,576 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 185 flow [2024-01-29 22:51:46,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:46,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:46,577 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:46,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-29 22:51:46,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 149 more)] === [2024-01-29 22:51:46,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:46,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1588217539, now seen corresponding path program 1 times [2024-01-29 22:51:46,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:46,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957098522] [2024-01-29 22:51:46,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:46,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 22:51:46,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:46,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957098522] [2024-01-29 22:51:46,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957098522] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:46,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:46,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:46,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798359730] [2024-01-29 22:51:46,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:46,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:46,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:46,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:46,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 186 [2024-01-29 22:51:46,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:46,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:46,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 186 [2024-01-29 22:51:46,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:49,504 INFO L124 PetriNetUnfolderBase]: 33585/48325 cut-off events. [2024-01-29 22:51:49,504 INFO L125 PetriNetUnfolderBase]: For 2356/2356 co-relation queries the response was YES. [2024-01-29 22:51:49,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101011 conditions, 48325 events. 33585/48325 cut-off events. For 2356/2356 co-relation queries the response was YES. Maximal size of possible extension queue 2268. Compared 368563 event pairs, 4435 based on Foata normal form. 0/35586 useless extension candidates. Maximal degree in co-relation 100992. Up to 35260 conditions per place. [2024-01-29 22:51:49,878 INFO L140 encePairwiseOnDemand]: 180/186 looper letters, 80 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-01-29 22:51:49,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 118 transitions, 453 flow [2024-01-29 22:51:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2024-01-29 22:51:49,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489247311827957 [2024-01-29 22:51:49,879 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 185 flow. Second operand 4 states and 334 transitions. [2024-01-29 22:51:49,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 118 transitions, 453 flow [2024-01-29 22:51:49,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 118 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:51:49,993 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 180 flow [2024-01-29 22:51:49,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2024-01-29 22:51:49,994 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -103 predicate places. [2024-01-29 22:51:49,994 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 180 flow [2024-01-29 22:51:49,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:49,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:49,995 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:49,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-29 22:51:49,995 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 149 more)] === [2024-01-29 22:51:49,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1769774388, now seen corresponding path program 1 times [2024-01-29 22:51:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838214073] [2024-01-29 22:51:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:50,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 22:51:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:50,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 22:51:50,011 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 22:51:50,012 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (151 of 152 remaining) [2024-01-29 22:51:50,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (150 of 152 remaining) [2024-01-29 22:51:50,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (149 of 152 remaining) [2024-01-29 22:51:50,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (148 of 152 remaining) [2024-01-29 22:51:50,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (147 of 152 remaining) [2024-01-29 22:51:50,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (146 of 152 remaining) [2024-01-29 22:51:50,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (145 of 152 remaining) [2024-01-29 22:51:50,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (144 of 152 remaining) [2024-01-29 22:51:50,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (143 of 152 remaining) [2024-01-29 22:51:50,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (142 of 152 remaining) [2024-01-29 22:51:50,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (141 of 152 remaining) [2024-01-29 22:51:50,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (140 of 152 remaining) [2024-01-29 22:51:50,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (139 of 152 remaining) [2024-01-29 22:51:50,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (138 of 152 remaining) [2024-01-29 22:51:50,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (137 of 152 remaining) [2024-01-29 22:51:50,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (136 of 152 remaining) [2024-01-29 22:51:50,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (135 of 152 remaining) [2024-01-29 22:51:50,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (134 of 152 remaining) [2024-01-29 22:51:50,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (133 of 152 remaining) [2024-01-29 22:51:50,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (132 of 152 remaining) [2024-01-29 22:51:50,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (131 of 152 remaining) [2024-01-29 22:51:50,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (130 of 152 remaining) [2024-01-29 22:51:50,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (129 of 152 remaining) [2024-01-29 22:51:50,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (128 of 152 remaining) [2024-01-29 22:51:50,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (127 of 152 remaining) [2024-01-29 22:51:50,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (126 of 152 remaining) [2024-01-29 22:51:50,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (125 of 152 remaining) [2024-01-29 22:51:50,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (124 of 152 remaining) [2024-01-29 22:51:50,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (123 of 152 remaining) [2024-01-29 22:51:50,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (122 of 152 remaining) [2024-01-29 22:51:50,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (121 of 152 remaining) [2024-01-29 22:51:50,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (120 of 152 remaining) [2024-01-29 22:51:50,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (119 of 152 remaining) [2024-01-29 22:51:50,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (118 of 152 remaining) [2024-01-29 22:51:50,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (117 of 152 remaining) [2024-01-29 22:51:50,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (116 of 152 remaining) [2024-01-29 22:51:50,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (115 of 152 remaining) [2024-01-29 22:51:50,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (114 of 152 remaining) [2024-01-29 22:51:50,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (113 of 152 remaining) [2024-01-29 22:51:50,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (112 of 152 remaining) [2024-01-29 22:51:50,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (111 of 152 remaining) [2024-01-29 22:51:50,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (110 of 152 remaining) [2024-01-29 22:51:50,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (109 of 152 remaining) [2024-01-29 22:51:50,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (108 of 152 remaining) [2024-01-29 22:51:50,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (107 of 152 remaining) [2024-01-29 22:51:50,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (106 of 152 remaining) [2024-01-29 22:51:50,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (105 of 152 remaining) [2024-01-29 22:51:50,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (104 of 152 remaining) [2024-01-29 22:51:50,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (103 of 152 remaining) [2024-01-29 22:51:50,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (102 of 152 remaining) [2024-01-29 22:51:50,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (101 of 152 remaining) [2024-01-29 22:51:50,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (100 of 152 remaining) [2024-01-29 22:51:50,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (99 of 152 remaining) [2024-01-29 22:51:50,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (98 of 152 remaining) [2024-01-29 22:51:50,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (97 of 152 remaining) [2024-01-29 22:51:50,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (96 of 152 remaining) [2024-01-29 22:51:50,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (95 of 152 remaining) [2024-01-29 22:51:50,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (94 of 152 remaining) [2024-01-29 22:51:50,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (93 of 152 remaining) [2024-01-29 22:51:50,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (92 of 152 remaining) [2024-01-29 22:51:50,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (91 of 152 remaining) [2024-01-29 22:51:50,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (90 of 152 remaining) [2024-01-29 22:51:50,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (89 of 152 remaining) [2024-01-29 22:51:50,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (88 of 152 remaining) [2024-01-29 22:51:50,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (87 of 152 remaining) [2024-01-29 22:51:50,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (86 of 152 remaining) [2024-01-29 22:51:50,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (85 of 152 remaining) [2024-01-29 22:51:50,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (84 of 152 remaining) [2024-01-29 22:51:50,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (83 of 152 remaining) [2024-01-29 22:51:50,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (82 of 152 remaining) [2024-01-29 22:51:50,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (81 of 152 remaining) [2024-01-29 22:51:50,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (80 of 152 remaining) [2024-01-29 22:51:50,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (79 of 152 remaining) [2024-01-29 22:51:50,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (78 of 152 remaining) [2024-01-29 22:51:50,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (77 of 152 remaining) [2024-01-29 22:51:50,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (76 of 152 remaining) [2024-01-29 22:51:50,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (75 of 152 remaining) [2024-01-29 22:51:50,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (74 of 152 remaining) [2024-01-29 22:51:50,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (73 of 152 remaining) [2024-01-29 22:51:50,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (72 of 152 remaining) [2024-01-29 22:51:50,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (71 of 152 remaining) [2024-01-29 22:51:50,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (70 of 152 remaining) [2024-01-29 22:51:50,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (69 of 152 remaining) [2024-01-29 22:51:50,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (68 of 152 remaining) [2024-01-29 22:51:50,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (67 of 152 remaining) [2024-01-29 22:51:50,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (66 of 152 remaining) [2024-01-29 22:51:50,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (65 of 152 remaining) [2024-01-29 22:51:50,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (64 of 152 remaining) [2024-01-29 22:51:50,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (63 of 152 remaining) [2024-01-29 22:51:50,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (62 of 152 remaining) [2024-01-29 22:51:50,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (61 of 152 remaining) [2024-01-29 22:51:50,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 152 remaining) [2024-01-29 22:51:50,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 152 remaining) [2024-01-29 22:51:50,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 152 remaining) [2024-01-29 22:51:50,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 152 remaining) [2024-01-29 22:51:50,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 152 remaining) [2024-01-29 22:51:50,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 152 remaining) [2024-01-29 22:51:50,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 152 remaining) [2024-01-29 22:51:50,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 152 remaining) [2024-01-29 22:51:50,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 152 remaining) [2024-01-29 22:51:50,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 152 remaining) [2024-01-29 22:51:50,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 152 remaining) [2024-01-29 22:51:50,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 152 remaining) [2024-01-29 22:51:50,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 152 remaining) [2024-01-29 22:51:50,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 152 remaining) [2024-01-29 22:51:50,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 152 remaining) [2024-01-29 22:51:50,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 152 remaining) [2024-01-29 22:51:50,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 152 remaining) [2024-01-29 22:51:50,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 152 remaining) [2024-01-29 22:51:50,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 152 remaining) [2024-01-29 22:51:50,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 152 remaining) [2024-01-29 22:51:50,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 152 remaining) [2024-01-29 22:51:50,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 152 remaining) [2024-01-29 22:51:50,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 152 remaining) [2024-01-29 22:51:50,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (37 of 152 remaining) [2024-01-29 22:51:50,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 152 remaining) [2024-01-29 22:51:50,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 152 remaining) [2024-01-29 22:51:50,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 152 remaining) [2024-01-29 22:51:50,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 152 remaining) [2024-01-29 22:51:50,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 152 remaining) [2024-01-29 22:51:50,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 152 remaining) [2024-01-29 22:51:50,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 152 remaining) [2024-01-29 22:51:50,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 152 remaining) [2024-01-29 22:51:50,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 152 remaining) [2024-01-29 22:51:50,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 152 remaining) [2024-01-29 22:51:50,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 152 remaining) [2024-01-29 22:51:50,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 152 remaining) [2024-01-29 22:51:50,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 152 remaining) [2024-01-29 22:51:50,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 152 remaining) [2024-01-29 22:51:50,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 152 remaining) [2024-01-29 22:51:50,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 152 remaining) [2024-01-29 22:51:50,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 152 remaining) [2024-01-29 22:51:50,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 152 remaining) [2024-01-29 22:51:50,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 152 remaining) [2024-01-29 22:51:50,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 152 remaining) [2024-01-29 22:51:50,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 152 remaining) [2024-01-29 22:51:50,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 152 remaining) [2024-01-29 22:51:50,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 152 remaining) [2024-01-29 22:51:50,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 152 remaining) [2024-01-29 22:51:50,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 152 remaining) [2024-01-29 22:51:50,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 152 remaining) [2024-01-29 22:51:50,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 152 remaining) [2024-01-29 22:51:50,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 152 remaining) [2024-01-29 22:51:50,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 152 remaining) [2024-01-29 22:51:50,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONERROR_FUNCTION (7 of 152 remaining) [2024-01-29 22:51:50,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 152 remaining) [2024-01-29 22:51:50,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 152 remaining) [2024-01-29 22:51:50,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 152 remaining) [2024-01-29 22:51:50,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 152 remaining) [2024-01-29 22:51:50,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 152 remaining) [2024-01-29 22:51:50,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 152 remaining) [2024-01-29 22:51:50,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 152 remaining) [2024-01-29 22:51:50,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-29 22:51:50,031 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:50,032 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 22:51:50,032 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-01-29 22:51:50,064 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:51:50,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 231 transitions, 502 flow [2024-01-29 22:51:50,247 INFO L124 PetriNetUnfolderBase]: 0/241 cut-off events. [2024-01-29 22:51:50,248 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-29 22:51:50,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 241 events. 0/241 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1401 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2024-01-29 22:51:50,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 231 transitions, 502 flow [2024-01-29 22:51:50,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 231 transitions, 502 flow [2024-01-29 22:51:50,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:51:50,253 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;@279c85d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:51:50,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 182 error locations. [2024-01-29 22:51:50,253 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:51:50,253 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:51:50,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:50,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:50,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:51:50,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 179 more)] === [2024-01-29 22:51:50,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:50,254 INFO L85 PathProgramCache]: Analyzing trace with hash 31282, now seen corresponding path program 1 times [2024-01-29 22:51:50,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:50,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854021691] [2024-01-29 22:51:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:50,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854021691] [2024-01-29 22:51:50,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854021691] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:50,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:51:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091373936] [2024-01-29 22:51:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:50,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:50,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:50,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:50,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 231 [2024-01-29 22:51:50,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 231 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:50,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:50,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 231 [2024-01-29 22:51:50,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand