./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.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_76-tricky_address3_racefree.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_76-tricky_address3_racefree.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28-race_reach_76-tricky_address3_racefree.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 16:45:43,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:45:43,768 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:45:43,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:45:43,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:45:43,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:45:43,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:45:43,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:45:43,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:45:43,786 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:45:43,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:45:43,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:45:43,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:45:43,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:45:43,787 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:45:43,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:45:43,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:45:43,788 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:45:43,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:45:43,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:45:43,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:45:43,804 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:45:43,804 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:45:43,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:45:43,805 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:45:43,805 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:45:43,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:45:43,805 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:45:43,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:45:43,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:45:43,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:45:43,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:45:43,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:45:43,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:45:43,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:45:43,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:45:43,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:45:43,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:45:43,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:45:43,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:45:43,808 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:45:43,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:45:43,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:45:43,808 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:45:43,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:45:43,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:45:43,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:45:43,989 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:45:43,989 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:45:43,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2024-01-31 16:45:45,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:45:45,311 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:45:45,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2024-01-31 16:45:45,325 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf4052be0/050434abb68b44a093f71a25550eaf50/FLAG40d22c338 [2024-01-31 16:45:45,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf4052be0/050434abb68b44a093f71a25550eaf50 [2024-01-31 16:45:45,338 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:45:45,339 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:45:45,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28-race_reach_76-tricky_address3_racefree.yml/witness.yml [2024-01-31 16:45:45,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:45:45,446 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:45:45,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:45:45,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:45:45,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:45:45,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:45" (1/2) ... [2024-01-31 16:45:45,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b448528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:45, skipping insertion in model container [2024-01-31 16:45:45,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:45" (1/2) ... [2024-01-31 16:45:45,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@cd70b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:45, skipping insertion in model container [2024-01-31 16:45:45,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:45" (2/2) ... [2024-01-31 16:45:45,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b448528 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:45, skipping insertion in model container [2024-01-31 16:45:45,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:45" (2/2) ... [2024-01-31 16:45:45,458 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:45:45,578 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:45:45,579 INFO L98 nessWitnessExtractor]: Location invariant after [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 16:45:45,579 INFO L98 nessWitnessExtractor]: Location invariant before [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 16:45:45,579 INFO L98 nessWitnessExtractor]: Location invariant after [L942-L942] (unsigned long )arg == 0UL [2024-01-31 16:45:45,580 INFO L98 nessWitnessExtractor]: Location invariant after [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 16:45:45,580 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] (i == 10) && (i == 10000) [2024-01-31 16:45:45,580 INFO L98 nessWitnessExtractor]: Location invariant before [L956-L956] (i == 10) && (i == 10000) [2024-01-31 16:45:45,581 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] (i == 10) && (i == 10000) [2024-01-31 16:45:45,581 INFO L98 nessWitnessExtractor]: Location invariant after [L952-L952] i == 10 [2024-01-31 16:45:45,581 INFO L98 nessWitnessExtractor]: Location invariant after [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 16:45:45,581 INFO L98 nessWitnessExtractor]: Location invariant before [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 16:45:45,581 INFO L98 nessWitnessExtractor]: Location invariant after [L940-L940] (unsigned long )arg == 0UL [2024-01-31 16:45:45,581 INFO L98 nessWitnessExtractor]: Location invariant before [L956-L956] (i == 10) && (i == 10000) [2024-01-31 16:45:45,581 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] (i == 10) && (i == 10000) [2024-01-31 16:45:45,582 INFO L98 nessWitnessExtractor]: Location invariant after [L956-L956] (i == 10) && (i == 10000) [2024-01-31 16:45:45,582 INFO L98 nessWitnessExtractor]: Location invariant after [L945-L945] (-2147483647 <= i) && ((unsigned long )arg == 0UL) [2024-01-31 16:45:45,626 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:45:46,054 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_76-tricky_address3_racefree.i[41323,41336] [2024-01-31 16:45:46,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:45:46,103 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:45:46,134 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_76-tricky_address3_racefree.i[41323,41336] [2024-01-31 16:45:46,137 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:45:46,138 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 16:45:46,168 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 16:45:46,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:45:46,224 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:45:46,224 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46 WrapperNode [2024-01-31 16:45:46,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:45:46,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:45:46,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:45:46,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:45:46,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,329 INFO L138 Inliner]: procedures = 271, calls = 49, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 228 [2024-01-31 16:45:46,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:45:46,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:45:46,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:45:46,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:45:46,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,355 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,367 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 11, 5, 2]. 55 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 6 writes are split as follows [0, 5, 0, 1]. [2024-01-31 16:45:46,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:45:46,382 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:45:46,382 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:45:46,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:45:46,383 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (1/1) ... [2024-01-31 16:45:46,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:45:46,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:46,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:45:46,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:45:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:45:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:45:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 16:45:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:45:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:45:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:45:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:45:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:45:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:45:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:45:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:45:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 16:45:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:45:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-31 16:45:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-31 16:45:46,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:45:46,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:45:46,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:45:46,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:45:46,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:45:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:45:46,455 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:45:46,581 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:45:46,583 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:45:46,869 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:45:46,869 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:45:46,972 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:45:46,973 INFO L320 CfgBuilder]: Removed 23 assume(true) statements. [2024-01-31 16:45:46,973 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:46 BoogieIcfgContainer [2024-01-31 16:45:46,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:45:46,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:45:46,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:45:46,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:45:46,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:45:45" (1/4) ... [2024-01-31 16:45:46,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f12e7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:45:46, skipping insertion in model container [2024-01-31 16:45:46,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:45" (2/4) ... [2024-01-31 16:45:46,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f12e7c1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:45:46, skipping insertion in model container [2024-01-31 16:45:46,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:46" (3/4) ... [2024-01-31 16:45:46,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f12e7c1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:45:46, skipping insertion in model container [2024-01-31 16:45:46,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:46" (4/4) ... [2024-01-31 16:45:46,979 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2024-01-31 16:45:47,021 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:45:47,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-01-31 16:45:47,022 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:45:47,059 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-31 16:45:47,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 115 transitions, 237 flow [2024-01-31 16:45:47,114 INFO L124 PetriNetUnfolderBase]: 38/170 cut-off events. [2024-01-31 16:45:47,115 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 16:45:47,119 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 16:45:47,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 115 transitions, 237 flow [2024-01-31 16:45:47,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 113 transitions, 230 flow [2024-01-31 16:45:47,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:45:47,172 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;@58e17bb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:45:47,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-01-31 16:45:47,215 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:45:47,220 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-01-31 16:45:47,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:45:47,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:47,220 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-01-31 16:45:47,221 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 16:45:47,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1604827019, now seen corresponding path program 1 times [2024-01-31 16:45:47,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:47,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9871525] [2024-01-31 16:45:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:47,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:47,454 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 16:45:47,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:47,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9871525] [2024-01-31 16:45:47,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9871525] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:45:47,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:45:47,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:45:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163999033] [2024-01-31 16:45:47,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:45:47,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:45:47,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:47,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:45:47,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:45:47,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 115 [2024-01-31 16:45:47,496 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 16:45:47,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:47,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 115 [2024-01-31 16:45:47,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:47,703 INFO L124 PetriNetUnfolderBase]: 200/647 cut-off events. [2024-01-31 16:45:47,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:45:47,708 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 16:45:47,712 INFO L140 encePairwiseOnDemand]: 95/115 looper letters, 33 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-01-31 16:45:47,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 196 flow [2024-01-31 16:45:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:45:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:45:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2024-01-31 16:45:47,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518840579710145 [2024-01-31 16:45:47,726 INFO L175 Difference]: Start difference. First operand has 91 places, 113 transitions, 230 flow. Second operand 3 states and 179 transitions. [2024-01-31 16:45:47,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 196 flow [2024-01-31 16:45:47,729 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 16:45:47,731 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 136 flow [2024-01-31 16:45:47,733 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 16:45:47,736 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -27 predicate places. [2024-01-31 16:45:47,736 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 136 flow [2024-01-31 16:45:47,736 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 16:45:47,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:47,737 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:45:47,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:45:47,737 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 16:45:47,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:47,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1286947245, now seen corresponding path program 1 times [2024-01-31 16:45:47,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:47,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396682054] [2024-01-31 16:45:47,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:47,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:47,798 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 16:45:47,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:47,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396682054] [2024-01-31 16:45:47,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396682054] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:45:47,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159955742] [2024-01-31 16:45:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:47,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:45:47,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:47,801 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 16:45:47,825 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 16:45:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:47,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:45:47,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:45:47,898 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 16:45:47,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:45:47,912 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 16:45:47,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159955742] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:45:47,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:45:47,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-31 16:45:47,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484979162] [2024-01-31 16:45:47,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:45:47,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:45:47,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:47,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:45:47,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:45:47,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 115 [2024-01-31 16:45:47,916 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 16:45:47,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:47,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 115 [2024-01-31 16:45:47,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:48,052 INFO L124 PetriNetUnfolderBase]: 200/650 cut-off events. [2024-01-31 16:45:48,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:45:48,054 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 16:45:48,056 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 33 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-01-31 16:45:48,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 224 flow [2024-01-31 16:45:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:45:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:45:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 293 transitions. [2024-01-31 16:45:48,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246376811594203 [2024-01-31 16:45:48,059 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 136 flow. Second operand 6 states and 293 transitions. [2024-01-31 16:45:48,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 224 flow [2024-01-31 16:45:48,060 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 16:45:48,061 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 168 flow [2024-01-31 16:45:48,061 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 16:45:48,062 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -20 predicate places. [2024-01-31 16:45:48,062 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 168 flow [2024-01-31 16:45:48,062 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 16:45:48,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:48,063 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-01-31 16:45:48,086 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 16:45:48,275 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 16:45:48,276 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 16:45:48,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash -70635509, now seen corresponding path program 2 times [2024-01-31 16:45:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:48,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809166086] [2024-01-31 16:45:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:48,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:48,390 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 16:45:48,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:48,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809166086] [2024-01-31 16:45:48,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809166086] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:45:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770002130] [2024-01-31 16:45:48,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:45:48,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:45:48,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:48,392 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 16:45:48,403 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 16:45:48,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:45:48,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:45:48,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 16:45:48,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:45:48,482 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 16:45:48,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:45:48,530 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 16:45:48,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770002130] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:45:48,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:45:48,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-01-31 16:45:48,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161205585] [2024-01-31 16:45:48,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:45:48,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-31 16:45:48,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:48,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-31 16:45:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-01-31 16:45:48,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 115 [2024-01-31 16:45:48,535 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 16:45:48,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:48,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 115 [2024-01-31 16:45:48,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:48,695 INFO L124 PetriNetUnfolderBase]: 200/656 cut-off events. [2024-01-31 16:45:48,696 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-31 16:45:48,698 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 16:45:48,701 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 33 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-01-31 16:45:48,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 292 flow [2024-01-31 16:45:48,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:45:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:45:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 554 transitions. [2024-01-31 16:45:48,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40144927536231884 [2024-01-31 16:45:48,705 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 168 flow. Second operand 12 states and 554 transitions. [2024-01-31 16:45:48,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 292 flow [2024-01-31 16:45:48,707 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 16:45:48,710 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 238 flow [2024-01-31 16:45:48,710 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 16:45:48,711 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -4 predicate places. [2024-01-31 16:45:48,711 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 238 flow [2024-01-31 16:45:48,712 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 16:45:48,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:48,712 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-01-31 16:45:48,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-01-31 16:45:48,918 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 16:45:48,918 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 16:45:48,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:48,919 INFO L85 PathProgramCache]: Analyzing trace with hash -129667893, now seen corresponding path program 3 times [2024-01-31 16:45:48,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:48,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288878044] [2024-01-31 16:45:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:48,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:45:48,945 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:45:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:45:48,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:45:48,975 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:45:48,976 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-01-31 16:45:48,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 22 remaining) [2024-01-31 16:45:48,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 22 remaining) [2024-01-31 16:45:48,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (18 of 22 remaining) [2024-01-31 16:45:48,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 22 remaining) [2024-01-31 16:45:48,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 22 remaining) [2024-01-31 16:45:48,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 22 remaining) [2024-01-31 16:45:48,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 22 remaining) [2024-01-31 16:45:48,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 22 remaining) [2024-01-31 16:45:48,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 22 remaining) [2024-01-31 16:45:48,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (11 of 22 remaining) [2024-01-31 16:45:48,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 22 remaining) [2024-01-31 16:45:48,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 22 remaining) [2024-01-31 16:45:48,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 22 remaining) [2024-01-31 16:45:48,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 22 remaining) [2024-01-31 16:45:48,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 22 remaining) [2024-01-31 16:45:48,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 22 remaining) [2024-01-31 16:45:48,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 22 remaining) [2024-01-31 16:45:48,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 22 remaining) [2024-01-31 16:45:48,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 22 remaining) [2024-01-31 16:45:48,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 22 remaining) [2024-01-31 16:45:48,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 22 remaining) [2024-01-31 16:45:48,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:45:48,982 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-01-31 16:45:48,984 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:45:48,984 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 16:45:49,014 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 16:45:49,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 169 transitions, 354 flow [2024-01-31 16:45:49,035 INFO L124 PetriNetUnfolderBase]: 64/286 cut-off events. [2024-01-31 16:45:49,035 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:45:49,037 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 16:45:49,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 169 transitions, 354 flow [2024-01-31 16:45:49,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 169 transitions, 354 flow [2024-01-31 16:45:49,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:45:49,043 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;@58e17bb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:45:49,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-01-31 16:45:49,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:45:49,046 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-01-31 16:45:49,046 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:45:49,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:49,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:45:49,047 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 16:45:49,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1056801475, now seen corresponding path program 1 times [2024-01-31 16:45:49,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:49,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70429165] [2024-01-31 16:45:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:49,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:45:49,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:49,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70429165] [2024-01-31 16:45:49,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70429165] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:45:49,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:45:49,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:45:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981000526] [2024-01-31 16:45:49,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:45:49,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:45:49,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:49,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:45:49,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:45:49,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 169 [2024-01-31 16:45:49,089 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 16:45:49,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:49,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 169 [2024-01-31 16:45:49,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:50,558 INFO L124 PetriNetUnfolderBase]: 9418/19670 cut-off events. [2024-01-31 16:45:50,559 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-01-31 16:45:50,592 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 16:45:50,674 INFO L140 encePairwiseOnDemand]: 138/169 looper letters, 55 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-01-31 16:45:50,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 330 flow [2024-01-31 16:45:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:45:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:45:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2024-01-31 16:45:50,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364891518737672 [2024-01-31 16:45:50,753 INFO L175 Difference]: Start difference. First operand has 135 places, 169 transitions, 354 flow. Second operand 3 states and 272 transitions. [2024-01-31 16:45:50,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 330 flow [2024-01-31 16:45:50,754 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 16:45:50,755 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 226 flow [2024-01-31 16:45:50,756 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 16:45:50,756 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, -28 predicate places. [2024-01-31 16:45:50,756 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 226 flow [2024-01-31 16:45:50,756 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 16:45:50,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:50,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:45:50,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:45:50,757 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 16:45:50,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash -447630250, now seen corresponding path program 1 times [2024-01-31 16:45:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141838676] [2024-01-31 16:45:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:50,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:50,813 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 16:45:50,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:50,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141838676] [2024-01-31 16:45:50,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141838676] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:45:50,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851580470] [2024-01-31 16:45:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:50,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:45:50,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:50,828 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 16:45:50,877 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 16:45:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:50,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2024-01-31 16:45:50,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:45:50,930 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 16:45:50,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:45:50,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851580470] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:45:50,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:45:50,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-01-31 16:45:50,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568207898] [2024-01-31 16:45:50,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:45:50,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:45:50,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:50,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:45:50,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:45:50,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 169 [2024-01-31 16:45:50,933 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 16:45:50,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:50,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 169 [2024-01-31 16:45:50,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:52,290 INFO L124 PetriNetUnfolderBase]: 9189/18980 cut-off events. [2024-01-31 16:45:52,291 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-01-31 16:45:52,336 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 16:45:52,410 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 78 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2024-01-31 16:45:52,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 126 transitions, 432 flow [2024-01-31 16:45:52,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:45:52,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:45:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2024-01-31 16:45:52,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52465483234714 [2024-01-31 16:45:52,412 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 226 flow. Second operand 3 states and 266 transitions. [2024-01-31 16:45:52,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 126 transitions, 432 flow [2024-01-31 16:45:52,414 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 16:45:52,416 INFO L231 Difference]: Finished difference. Result has 109 places, 104 transitions, 234 flow [2024-01-31 16:45:52,416 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 16:45:52,418 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, -26 predicate places. [2024-01-31 16:45:52,418 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 104 transitions, 234 flow [2024-01-31 16:45:52,421 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 16:45:52,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:52,421 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:45:52,446 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 16:45:52,638 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 16:45:52,639 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 16:45:52,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:52,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1915890719, now seen corresponding path program 1 times [2024-01-31 16:45:52,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:52,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713698396] [2024-01-31 16:45:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:52,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:52,687 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 16:45:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713698396] [2024-01-31 16:45:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713698396] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:45:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224784628] [2024-01-31 16:45:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:52,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:45:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:52,690 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 16:45:52,691 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 16:45:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:52,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:45:52,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:45:52,809 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 16:45:52,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:45:52,824 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 16:45:52,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224784628] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:45:52,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:45:52,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-31 16:45:52,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844163183] [2024-01-31 16:45:52,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:45:52,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:45:52,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:52,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:45:52,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:45:52,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 169 [2024-01-31 16:45:52,830 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 16:45:52,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:52,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 169 [2024-01-31 16:45:52,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:54,296 INFO L124 PetriNetUnfolderBase]: 9418/19749 cut-off events. [2024-01-31 16:45:54,299 INFO L125 PetriNetUnfolderBase]: For 1074/1074 co-relation queries the response was YES. [2024-01-31 16:45:54,391 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 16:45:54,514 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 56 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-01-31 16:45:54,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 107 transitions, 368 flow [2024-01-31 16:45:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:45:54,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:45:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 435 transitions. [2024-01-31 16:45:54,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289940828402367 [2024-01-31 16:45:54,517 INFO L175 Difference]: Start difference. First operand has 109 places, 104 transitions, 234 flow. Second operand 6 states and 435 transitions. [2024-01-31 16:45:54,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 107 transitions, 368 flow [2024-01-31 16:45:54,518 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 16:45:54,519 INFO L231 Difference]: Finished difference. Result has 116 places, 107 transitions, 268 flow [2024-01-31 16:45:54,520 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 16:45:54,520 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, -19 predicate places. [2024-01-31 16:45:54,520 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 268 flow [2024-01-31 16:45:54,521 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 16:45:54,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:54,521 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-01-31 16:45:54,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-01-31 16:45:54,732 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 16:45:54,733 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 16:45:54,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:54,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1960261160, now seen corresponding path program 2 times [2024-01-31 16:45:54,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:54,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324615651] [2024-01-31 16:45:54,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:54,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:54,781 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 16:45:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324615651] [2024-01-31 16:45:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324615651] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:45:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22371003] [2024-01-31 16:45:54,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:45:54,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:45:54,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:54,788 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 16:45:54,809 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 16:45:54,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:45:54,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:45:54,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 16:45:54,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:45:54,880 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 16:45:54,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:45:54,917 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 16:45:54,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22371003] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:45:54,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:45:54,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-01-31 16:45:54,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119355769] [2024-01-31 16:45:54,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:45:54,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-31 16:45:54,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:54,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-31 16:45:54,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-01-31 16:45:54,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 169 [2024-01-31 16:45:54,920 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 16:45:54,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:54,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 169 [2024-01-31 16:45:54,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:45:56,477 INFO L124 PetriNetUnfolderBase]: 9418/19755 cut-off events. [2024-01-31 16:45:56,478 INFO L125 PetriNetUnfolderBase]: For 1108/1108 co-relation queries the response was YES. [2024-01-31 16:45:56,553 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 16:45:56,621 INFO L140 encePairwiseOnDemand]: 166/169 looper letters, 56 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2024-01-31 16:45:56,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 113 transitions, 438 flow [2024-01-31 16:45:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:45:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:45:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 816 transitions. [2024-01-31 16:45:56,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40236686390532544 [2024-01-31 16:45:56,623 INFO L175 Difference]: Start difference. First operand has 116 places, 107 transitions, 268 flow. Second operand 12 states and 816 transitions. [2024-01-31 16:45:56,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 113 transitions, 438 flow [2024-01-31 16:45:56,626 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 16:45:56,629 INFO L231 Difference]: Finished difference. Result has 132 places, 113 transitions, 338 flow [2024-01-31 16:45:56,630 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 16:45:56,631 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, -3 predicate places. [2024-01-31 16:45:56,631 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 113 transitions, 338 flow [2024-01-31 16:45:56,631 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 16:45:56,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:56,631 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-01-31 16:45:56,650 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 16:45:56,843 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 16:45:56,844 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 16:45:56,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash 55759992, now seen corresponding path program 3 times [2024-01-31 16:45:56,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:56,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186713834] [2024-01-31 16:45:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:56,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:45:56,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:45:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:45:56,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:45:56,893 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:45:56,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-01-31 16:45:56,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 29 remaining) [2024-01-31 16:45:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 29 remaining) [2024-01-31 16:45:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (25 of 29 remaining) [2024-01-31 16:45:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 29 remaining) [2024-01-31 16:45:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 29 remaining) [2024-01-31 16:45:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 29 remaining) [2024-01-31 16:45:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 29 remaining) [2024-01-31 16:45:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 29 remaining) [2024-01-31 16:45:56,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 29 remaining) [2024-01-31 16:45:56,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (18 of 29 remaining) [2024-01-31 16:45:56,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 29 remaining) [2024-01-31 16:45:56,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 29 remaining) [2024-01-31 16:45:56,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 29 remaining) [2024-01-31 16:45:56,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 29 remaining) [2024-01-31 16:45:56,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 29 remaining) [2024-01-31 16:45:56,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 29 remaining) [2024-01-31 16:45:56,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (11 of 29 remaining) [2024-01-31 16:45:56,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 29 remaining) [2024-01-31 16:45:56,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 29 remaining) [2024-01-31 16:45:56,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 29 remaining) [2024-01-31 16:45:56,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 29 remaining) [2024-01-31 16:45:56,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 29 remaining) [2024-01-31 16:45:56,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 29 remaining) [2024-01-31 16:45:56,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 29 remaining) [2024-01-31 16:45:56,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 29 remaining) [2024-01-31 16:45:56,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 29 remaining) [2024-01-31 16:45:56,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 29 remaining) [2024-01-31 16:45:56,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 29 remaining) [2024-01-31 16:45:56,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:45:56,897 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-01-31 16:45:56,898 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:45:56,898 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 16:45:56,943 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:45:56,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 223 transitions, 473 flow [2024-01-31 16:45:56,980 INFO L124 PetriNetUnfolderBase]: 93/413 cut-off events. [2024-01-31 16:45:56,981 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-31 16:45:56,985 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 16:45:56,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 223 transitions, 473 flow [2024-01-31 16:45:56,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 223 transitions, 473 flow [2024-01-31 16:45:56,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:45:56,993 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;@58e17bb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:45:56,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-01-31 16:45:56,997 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:45:56,997 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-01-31 16:45:56,997 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:45:56,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:56,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:45:56,997 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 16:45:56,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:56,998 INFO L85 PathProgramCache]: Analyzing trace with hash 59428508, now seen corresponding path program 1 times [2024-01-31 16:45:56,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:56,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290410727] [2024-01-31 16:45:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:56,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:45:57,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:57,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290410727] [2024-01-31 16:45:57,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290410727] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:45:57,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:45:57,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:45:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233159806] [2024-01-31 16:45:57,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:45:57,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:45:57,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:57,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:45:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:45:57,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 223 [2024-01-31 16:45:57,026 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 16:45:57,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:57,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 223 [2024-01-31 16:45:57,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand