./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.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/28-race_reach_77-tricky_address4_racing.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/goblint-regression/28-race_reach_77-tricky_address4_racing.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28-race_reach_77-tricky_address4_racing.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-?-80b1b13-m [2024-01-31 17:43:00,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:43:00,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:43:00,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:43:00,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:43:00,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:43:00,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:43:00,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:43:00,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:43:00,394 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:43:00,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:43:00,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:43:00,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:43:00,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:43:00,395 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:43:00,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:43:00,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:43:00,396 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:43:00,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:43:00,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:43:00,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:43:00,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:43:00,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:43:00,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:43:00,398 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:43:00,398 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:43:00,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:43:00,398 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:43:00,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:43:00,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:43:00,399 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:43:00,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:43:00,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:43:00,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:43:00,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:43:00,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:43:00,400 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:43:00,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:43:00,400 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:43:00,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:43:00,401 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:43:00,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:43:00,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:43:00,401 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:43:00,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:43:00,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:43:00,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:43:00,740 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:43:00,740 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:43:00,741 INFO L431 ainManager$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/28-race_reach_77-tricky_address4_racing.yml/witness.yml [2024-01-31 17:43:00,919 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:43:00,919 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:43:00,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-01-31 17:43:02,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:43:02,326 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:43:02,327 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-01-31 17:43:02,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedd95d00/73d83abedd184b0f8131778984d27907/FLAG3f7cb6962 [2024-01-31 17:43:02,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedd95d00/73d83abedd184b0f8131778984d27907 [2024-01-31 17:43:02,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:43:02,364 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:43:02,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:43:02,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:43:02,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:43:02,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:43:00" (1/2) ... [2024-01-31 17:43:02,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9483d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:02, skipping insertion in model container [2024-01-31 17:43:02,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:43:00" (1/2) ... [2024-01-31 17:43:02,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a66f0c3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:02, skipping insertion in model container [2024-01-31 17:43:02,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:43:02" (2/2) ... [2024-01-31 17:43:02,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9483d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:02, skipping insertion in model container [2024-01-31 17:43:02,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:43:02" (2/2) ... [2024-01-31 17:43:02,374 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:43:02,519 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:43:02,521 INFO L98 nessWitnessExtractor]: Location invariant after [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 17:43:02,521 INFO L98 nessWitnessExtractor]: Location invariant before [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 17:43:02,521 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] (i == 10) && (i == 10000) [2024-01-31 17:43:02,521 INFO L98 nessWitnessExtractor]: Location invariant after [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 17:43:02,521 INFO L98 nessWitnessExtractor]: Location invariant before [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 17:43:02,522 INFO L98 nessWitnessExtractor]: Location invariant after [L942-L942] (unsigned long )arg == 0UL [2024-01-31 17:43:02,522 INFO L98 nessWitnessExtractor]: Location invariant after [L952-L952] i == 10 [2024-01-31 17:43:02,522 INFO L98 nessWitnessExtractor]: Location invariant before [L956-L956] (i == 10) && (i == 10000) [2024-01-31 17:43:02,523 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] (i == 10) && (i == 10000) [2024-01-31 17:43:02,523 INFO L98 nessWitnessExtractor]: Location invariant after [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 17:43:02,523 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] (i == 10) && (i == 10000) [2024-01-31 17:43:02,523 INFO L98 nessWitnessExtractor]: Location invariant before [L956-L956] (i == 10) && (i == 10000) [2024-01-31 17:43:02,523 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] (i == 10) && (i == 10000) [2024-01-31 17:43:02,523 INFO L98 nessWitnessExtractor]: Location invariant after [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 17:43:02,523 INFO L98 nessWitnessExtractor]: Location invariant after [L940-L940] (unsigned long )arg == 0UL [2024-01-31 17:43:02,590 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:43:02,937 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2024-01-31 17:43:02,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:43:02,986 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:43:03,033 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2024-01-31 17:43:03,035 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 17:43:03,036 WARN L424 MainDispatcher]: Unable to annotate struct s with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 17:43:03,075 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 17:43:03,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:43:03,149 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:43:03,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03 WrapperNode [2024-01-31 17:43:03,150 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:43:03,151 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:43:03,151 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:43:03,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:43:03,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,225 INFO L138 Inliner]: procedures = 271, calls = 49, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 228 [2024-01-31 17:43:03,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:43:03,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:43:03,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:43:03,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:43:03,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,267 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 2, 11, 5]. 55 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 5]. The 6 writes are split as follows [0, 1, 5, 0]. [2024-01-31 17:43:03,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:43:03,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:43:03,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:43:03,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:43:03,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (1/1) ... [2024-01-31 17:43:03,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:43:03,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:03,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:43:03,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:43:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:43:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:43:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 17:43:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:43:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:43:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:43:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:43:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:43:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:43:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:43:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:43:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 17:43:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:43:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-31 17:43:03,374 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-31 17:43:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:43:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:43:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:43:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:43:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:43:03,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:43:03,375 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:43:03,504 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:43:03,505 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:43:03,718 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:43:03,718 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:43:03,824 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:43:03,824 INFO L320 CfgBuilder]: Removed 23 assume(true) statements. [2024-01-31 17:43:03,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:43:03 BoogieIcfgContainer [2024-01-31 17:43:03,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:43:03,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:43:03,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:43:03,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:43:03,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:43:00" (1/4) ... [2024-01-31 17:43:03,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ebc0fe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:43:03, skipping insertion in model container [2024-01-31 17:43:03,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:43:02" (2/4) ... [2024-01-31 17:43:03,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ebc0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:43:03, skipping insertion in model container [2024-01-31 17:43:03,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:03" (3/4) ... [2024-01-31 17:43:03,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ebc0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:43:03, skipping insertion in model container [2024-01-31 17:43:03,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:43:03" (4/4) ... [2024-01-31 17:43:03,831 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2024-01-31 17:43:03,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:43:03,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-01-31 17:43:03,845 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:43:03,881 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-31 17:43:03,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 115 transitions, 237 flow [2024-01-31 17:43:03,942 INFO L124 PetriNetUnfolderBase]: 38/170 cut-off events. [2024-01-31 17:43:03,942 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 17:43:03,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 170 events. 38/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 797 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 108. Up to 8 conditions per place. [2024-01-31 17:43:03,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 115 transitions, 237 flow [2024-01-31 17:43:03,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 113 transitions, 230 flow [2024-01-31 17:43:03,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:43:03,962 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;@44e5ff79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:43:03,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-01-31 17:43:03,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:43:03,966 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-01-31 17:43:03,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:43:03,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:03,967 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-01-31 17:43:03,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-01-31 17:43:03,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1604827019, now seen corresponding path program 1 times [2024-01-31 17:43:03,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:03,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061512851] [2024-01-31 17:43:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:03,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:04,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:04,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061512851] [2024-01-31 17:43:04,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061512851] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:43:04,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:43:04,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:43:04,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163018449] [2024-01-31 17:43:04,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:04,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:43:04,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:43:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:43:04,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 115 [2024-01-31 17:43:04,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 113 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:04,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:04,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 115 [2024-01-31 17:43:04,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:04,465 INFO L124 PetriNetUnfolderBase]: 200/647 cut-off events. [2024-01-31 17:43:04,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:43:04,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 647 events. 200/647 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3737 event pairs, 189 based on Foata normal form. 138/717 useless extension candidates. Maximal degree in co-relation 1035. Up to 421 conditions per place. [2024-01-31 17:43:04,473 INFO L140 encePairwiseOnDemand]: 95/115 looper letters, 33 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-01-31 17:43:04,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 196 flow [2024-01-31 17:43:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:43:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:43:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2024-01-31 17:43:04,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518840579710145 [2024-01-31 17:43:04,486 INFO L175 Difference]: Start difference. First operand has 91 places, 113 transitions, 230 flow. Second operand 3 states and 179 transitions. [2024-01-31 17:43:04,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 196 flow [2024-01-31 17:43:04,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:43:04,492 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 136 flow [2024-01-31 17:43:04,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-01-31 17:43:04,497 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -27 predicate places. [2024-01-31 17:43:04,497 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 136 flow [2024-01-31 17:43:04,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:04,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:04,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:04,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:43:04,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-01-31 17:43:04,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:04,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1286947245, now seen corresponding path program 1 times [2024-01-31 17:43:04,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:04,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107584049] [2024-01-31 17:43:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:04,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:04,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:04,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107584049] [2024-01-31 17:43:04,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107584049] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:04,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288510344] [2024-01-31 17:43:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:04,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:04,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:04,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:04,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:43:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:04,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 17:43:04,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:04,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:04,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288510344] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:43:04,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:43:04,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-31 17:43:04,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143190872] [2024-01-31 17:43:04,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:43:04,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:43:04,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:43:04,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:43:04,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 115 [2024-01-31 17:43:04,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:04,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:04,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 115 [2024-01-31 17:43:04,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:04,766 INFO L124 PetriNetUnfolderBase]: 200/650 cut-off events. [2024-01-31 17:43:04,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:43:04,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 650 events. 200/650 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3749 event pairs, 189 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 1077. Up to 421 conditions per place. [2024-01-31 17:43:04,769 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 33 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-01-31 17:43:04,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 224 flow [2024-01-31 17:43:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:43:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:43:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 293 transitions. [2024-01-31 17:43:04,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246376811594203 [2024-01-31 17:43:04,772 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 136 flow. Second operand 6 states and 293 transitions. [2024-01-31 17:43:04,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 224 flow [2024-01-31 17:43:04,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 220 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:04,774 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 168 flow [2024-01-31 17:43:04,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-01-31 17:43:04,774 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -20 predicate places. [2024-01-31 17:43:04,775 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 168 flow [2024-01-31 17:43:04,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:04,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:04,775 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-01-31 17:43:04,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 17:43:04,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:04,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-01-31 17:43:04,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:04,991 INFO L85 PathProgramCache]: Analyzing trace with hash -70635509, now seen corresponding path program 2 times [2024-01-31 17:43:04,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:04,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307224739] [2024-01-31 17:43:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:04,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:05,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:05,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307224739] [2024-01-31 17:43:05,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307224739] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:05,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683971294] [2024-01-31 17:43:05,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:43:05,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:05,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:05,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:05,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:43:05,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:43:05,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:43:05,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:43:05,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:05,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:43:05,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683971294] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:43:05,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:43:05,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-01-31 17:43:05,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855230574] [2024-01-31 17:43:05,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:43:05,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-31 17:43:05,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-31 17:43:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-01-31 17:43:05,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 115 [2024-01-31 17:43:05,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 168 flow. Second operand has 12 states, 12 states have (on average 43.25) internal successors, (519), 12 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:05,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:05,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 115 [2024-01-31 17:43:05,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:05,408 INFO L124 PetriNetUnfolderBase]: 200/656 cut-off events. [2024-01-31 17:43:05,409 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-31 17:43:05,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 656 events. 200/656 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3749 event pairs, 189 based on Foata normal form. 6/595 useless extension candidates. Maximal degree in co-relation 1068. Up to 421 conditions per place. [2024-01-31 17:43:05,411 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 33 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-01-31 17:43:05,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 292 flow [2024-01-31 17:43:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:43:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:43:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 554 transitions. [2024-01-31 17:43:05,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40144927536231884 [2024-01-31 17:43:05,420 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 168 flow. Second operand 12 states and 554 transitions. [2024-01-31 17:43:05,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 292 flow [2024-01-31 17:43:05,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 70 transitions, 278 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:05,423 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 238 flow [2024-01-31 17:43:05,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=238, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2024-01-31 17:43:05,424 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -4 predicate places. [2024-01-31 17:43:05,424 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 238 flow [2024-01-31 17:43:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 43.25) internal successors, (519), 12 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:05,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:05,425 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-01-31 17:43:05,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:43:05,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-01-31 17:43:05,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-01-31 17:43:05,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash -129667893, now seen corresponding path program 3 times [2024-01-31 17:43:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531493167] [2024-01-31 17:43:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:43:05,650 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 17:43:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:43:05,675 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 17:43:05,676 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 17:43:05,676 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-01-31 17:43:05,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 22 remaining) [2024-01-31 17:43:05,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 22 remaining) [2024-01-31 17:43:05,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (18 of 22 remaining) [2024-01-31 17:43:05,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 22 remaining) [2024-01-31 17:43:05,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 22 remaining) [2024-01-31 17:43:05,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 22 remaining) [2024-01-31 17:43:05,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 22 remaining) [2024-01-31 17:43:05,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 22 remaining) [2024-01-31 17:43:05,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 22 remaining) [2024-01-31 17:43:05,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (11 of 22 remaining) [2024-01-31 17:43:05,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 22 remaining) [2024-01-31 17:43:05,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 22 remaining) [2024-01-31 17:43:05,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 22 remaining) [2024-01-31 17:43:05,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 22 remaining) [2024-01-31 17:43:05,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 22 remaining) [2024-01-31 17:43:05,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 22 remaining) [2024-01-31 17:43:05,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 22 remaining) [2024-01-31 17:43:05,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 22 remaining) [2024-01-31 17:43:05,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 22 remaining) [2024-01-31 17:43:05,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 22 remaining) [2024-01-31 17:43:05,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 22 remaining) [2024-01-31 17:43:05,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:43:05,681 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-01-31 17:43:05,683 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 17:43:05,683 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 17:43:05,708 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 17:43:05,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 169 transitions, 354 flow [2024-01-31 17:43:05,727 INFO L124 PetriNetUnfolderBase]: 64/286 cut-off events. [2024-01-31 17:43:05,727 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 17:43:05,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 286 events. 64/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1586 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 172. Up to 12 conditions per place. [2024-01-31 17:43:05,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 169 transitions, 354 flow [2024-01-31 17:43:05,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 169 transitions, 354 flow [2024-01-31 17:43:05,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:43:05,733 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;@44e5ff79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:43:05,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-01-31 17:43:05,736 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:43:05,736 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-01-31 17:43:05,736 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:43:05,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:05,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:05,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2024-01-31 17:43:05,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:05,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1056801475, now seen corresponding path program 1 times [2024-01-31 17:43:05,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:05,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201313448] [2024-01-31 17:43:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:05,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:43:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:05,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201313448] [2024-01-31 17:43:05,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201313448] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:43:05,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:43:05,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:43:05,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087708835] [2024-01-31 17:43:05,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:05,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:43:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:05,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:43:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:43:05,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 169 [2024-01-31 17:43:05,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 169 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:05,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:05,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 169 [2024-01-31 17:43:05,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:07,148 INFO L124 PetriNetUnfolderBase]: 9418/19670 cut-off events. [2024-01-31 17:43:07,148 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-01-31 17:43:07,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33911 conditions, 19670 events. 9418/19670 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 179113 event pairs, 8967 based on Foata normal form. 4655/22413 useless extension candidates. Maximal degree in co-relation 29803. Up to 14169 conditions per place. [2024-01-31 17:43:07,311 INFO L140 encePairwiseOnDemand]: 138/169 looper letters, 55 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-01-31 17:43:07,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 330 flow [2024-01-31 17:43:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:43:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:43:07,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2024-01-31 17:43:07,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364891518737672 [2024-01-31 17:43:07,313 INFO L175 Difference]: Start difference. First operand has 135 places, 169 transitions, 354 flow. Second operand 3 states and 272 transitions. [2024-01-31 17:43:07,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 330 flow [2024-01-31 17:43:07,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 103 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:43:07,317 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 226 flow [2024-01-31 17:43:07,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2024-01-31 17:43:07,319 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, -28 predicate places. [2024-01-31 17:43:07,319 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 226 flow [2024-01-31 17:43:07,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:07,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:07,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:07,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:43:07,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2024-01-31 17:43:07,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash -447630250, now seen corresponding path program 1 times [2024-01-31 17:43:07,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:07,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557760196] [2024-01-31 17:43:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:43:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557760196] [2024-01-31 17:43:07,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557760196] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:07,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160146595] [2024-01-31 17:43:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:07,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:07,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:07,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:07,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:43:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:07,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2024-01-31 17:43:07,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:43:07,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:43:07,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160146595] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:43:07,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:43:07,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-01-31 17:43:07,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783954555] [2024-01-31 17:43:07,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:07,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:43:07,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:07,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:43:07,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:43:07,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 169 [2024-01-31 17:43:07,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:07,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:07,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 169 [2024-01-31 17:43:07,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:08,743 INFO L124 PetriNetUnfolderBase]: 9189/18980 cut-off events. [2024-01-31 17:43:08,743 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-01-31 17:43:08,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33091 conditions, 18980 events. 9189/18980 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 175531 event pairs, 4158 based on Foata normal form. 0/17246 useless extension candidates. Maximal degree in co-relation 33078. Up to 14009 conditions per place. [2024-01-31 17:43:08,827 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 78 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2024-01-31 17:43:08,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 126 transitions, 432 flow [2024-01-31 17:43:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:43:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:43:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2024-01-31 17:43:08,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52465483234714 [2024-01-31 17:43:08,829 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 226 flow. Second operand 3 states and 266 transitions. [2024-01-31 17:43:08,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 126 transitions, 432 flow [2024-01-31 17:43:08,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 126 transitions, 428 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:08,846 INFO L231 Difference]: Finished difference. Result has 109 places, 104 transitions, 234 flow [2024-01-31 17:43:08,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=109, PETRI_TRANSITIONS=104} [2024-01-31 17:43:08,846 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, -26 predicate places. [2024-01-31 17:43:08,847 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 104 transitions, 234 flow [2024-01-31 17:43:08,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:08,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:08,847 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:08,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:43:09,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:09,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2024-01-31 17:43:09,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:09,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1915890719, now seen corresponding path program 1 times [2024-01-31 17:43:09,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:09,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062510568] [2024-01-31 17:43:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:09,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:09,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:09,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062510568] [2024-01-31 17:43:09,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062510568] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:09,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79910768] [2024-01-31 17:43:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:09,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:09,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:09,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:09,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 17:43:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:09,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 17:43:09,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:09,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:09,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79910768] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:43:09,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:43:09,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-31 17:43:09,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545494962] [2024-01-31 17:43:09,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:43:09,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:43:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:43:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:43:09,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 169 [2024-01-31 17:43:09,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 104 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:09,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:09,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 169 [2024-01-31 17:43:09,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:10,517 INFO L124 PetriNetUnfolderBase]: 9418/19749 cut-off events. [2024-01-31 17:43:10,517 INFO L125 PetriNetUnfolderBase]: For 1074/1074 co-relation queries the response was YES. [2024-01-31 17:43:10,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35030 conditions, 19749 events. 9418/19749 cut-off events. For 1074/1074 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 180826 event pairs, 8967 based on Foata normal form. 3/18340 useless extension candidates. Maximal degree in co-relation 35002. Up to 14162 conditions per place. [2024-01-31 17:43:10,607 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 56 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-01-31 17:43:10,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 107 transitions, 368 flow [2024-01-31 17:43:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:43:10,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:43:10,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 435 transitions. [2024-01-31 17:43:10,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289940828402367 [2024-01-31 17:43:10,609 INFO L175 Difference]: Start difference. First operand has 109 places, 104 transitions, 234 flow. Second operand 6 states and 435 transitions. [2024-01-31 17:43:10,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 107 transitions, 368 flow [2024-01-31 17:43:10,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 107 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:10,612 INFO L231 Difference]: Finished difference. Result has 116 places, 107 transitions, 268 flow [2024-01-31 17:43:10,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2024-01-31 17:43:10,613 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, -19 predicate places. [2024-01-31 17:43:10,614 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 268 flow [2024-01-31 17:43:10,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:10,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:10,614 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-01-31 17:43:10,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 17:43:10,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:10,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2024-01-31 17:43:10,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:10,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1960261160, now seen corresponding path program 2 times [2024-01-31 17:43:10,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:10,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424524210] [2024-01-31 17:43:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:10,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:10,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:10,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424524210] [2024-01-31 17:43:10,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424524210] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:10,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814294258] [2024-01-31 17:43:10,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:43:10,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:10,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:10,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:10,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 17:43:11,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:43:11,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:43:11,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:43:11,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:11,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 17:43:11,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814294258] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:43:11,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:43:11,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-01-31 17:43:11,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968800944] [2024-01-31 17:43:11,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:43:11,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-31 17:43:11,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:11,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-31 17:43:11,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-01-31 17:43:11,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 169 [2024-01-31 17:43:11,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 268 flow. Second operand has 12 states, 12 states have (on average 63.333333333333336) internal successors, (760), 12 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:11,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:11,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 169 [2024-01-31 17:43:11,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:12,412 INFO L124 PetriNetUnfolderBase]: 9418/19755 cut-off events. [2024-01-31 17:43:12,412 INFO L125 PetriNetUnfolderBase]: For 1108/1108 co-relation queries the response was YES. [2024-01-31 17:43:12,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35047 conditions, 19755 events. 9418/19755 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 180794 event pairs, 8967 based on Foata normal form. 6/18349 useless extension candidates. Maximal degree in co-relation 34987. Up to 14162 conditions per place. [2024-01-31 17:43:12,497 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 56 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2024-01-31 17:43:12,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 113 transitions, 438 flow [2024-01-31 17:43:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:43:12,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:43:12,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 816 transitions. [2024-01-31 17:43:12,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40236686390532544 [2024-01-31 17:43:12,500 INFO L175 Difference]: Start difference. First operand has 116 places, 107 transitions, 268 flow. Second operand 12 states and 816 transitions. [2024-01-31 17:43:12,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 113 transitions, 438 flow [2024-01-31 17:43:12,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 113 transitions, 424 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:12,503 INFO L231 Difference]: Finished difference. Result has 132 places, 113 transitions, 338 flow [2024-01-31 17:43:12,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=338, PETRI_PLACES=132, PETRI_TRANSITIONS=113} [2024-01-31 17:43:12,503 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, -3 predicate places. [2024-01-31 17:43:12,504 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 113 transitions, 338 flow [2024-01-31 17:43:12,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.333333333333336) internal successors, (760), 12 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:12,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:12,504 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-01-31 17:43:12,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 17:43:12,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:12,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2024-01-31 17:43:12,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:12,717 INFO L85 PathProgramCache]: Analyzing trace with hash 55759992, now seen corresponding path program 3 times [2024-01-31 17:43:12,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:12,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457046856] [2024-01-31 17:43:12,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:12,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:43:12,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 17:43:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:43:12,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 17:43:12,781 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 17:43:12,782 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-01-31 17:43:12,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 29 remaining) [2024-01-31 17:43:12,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 29 remaining) [2024-01-31 17:43:12,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (25 of 29 remaining) [2024-01-31 17:43:12,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 29 remaining) [2024-01-31 17:43:12,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 29 remaining) [2024-01-31 17:43:12,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 29 remaining) [2024-01-31 17:43:12,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 29 remaining) [2024-01-31 17:43:12,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 29 remaining) [2024-01-31 17:43:12,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 29 remaining) [2024-01-31 17:43:12,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (18 of 29 remaining) [2024-01-31 17:43:12,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 29 remaining) [2024-01-31 17:43:12,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 29 remaining) [2024-01-31 17:43:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 29 remaining) [2024-01-31 17:43:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 29 remaining) [2024-01-31 17:43:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 29 remaining) [2024-01-31 17:43:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 29 remaining) [2024-01-31 17:43:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (11 of 29 remaining) [2024-01-31 17:43:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 29 remaining) [2024-01-31 17:43:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 29 remaining) [2024-01-31 17:43:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 29 remaining) [2024-01-31 17:43:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 29 remaining) [2024-01-31 17:43:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 29 remaining) [2024-01-31 17:43:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 29 remaining) [2024-01-31 17:43:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 29 remaining) [2024-01-31 17:43:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 29 remaining) [2024-01-31 17:43:12,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 29 remaining) [2024-01-31 17:43:12,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 29 remaining) [2024-01-31 17:43:12,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 29 remaining) [2024-01-31 17:43:12,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:43:12,791 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-01-31 17:43:12,792 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 17:43:12,792 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 17:43:12,840 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 17:43:12,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 223 transitions, 473 flow [2024-01-31 17:43:12,883 INFO L124 PetriNetUnfolderBase]: 93/413 cut-off events. [2024-01-31 17:43:12,884 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-31 17:43:12,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 413 events. 93/413 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2453 event pairs, 1 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 295. Up to 16 conditions per place. [2024-01-31 17:43:12,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 223 transitions, 473 flow [2024-01-31 17:43:12,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 223 transitions, 473 flow [2024-01-31 17:43:12,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:43:12,895 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;@44e5ff79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:43:12,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-01-31 17:43:12,899 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:43:12,899 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-01-31 17:43:12,900 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:43:12,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:12,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:12,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2024-01-31 17:43:12,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:12,900 INFO L85 PathProgramCache]: Analyzing trace with hash 59428508, now seen corresponding path program 1 times [2024-01-31 17:43:12,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:12,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891023546] [2024-01-31 17:43:12,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:12,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:43:12,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:12,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891023546] [2024-01-31 17:43:12,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891023546] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:43:12,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:43:12,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:43:12,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391450246] [2024-01-31 17:43:12,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:12,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:43:12,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:12,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:43:12,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:43:12,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 223 [2024-01-31 17:43:12,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 223 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:43:12,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:12,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 223 [2024-01-31 17:43:12,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand