/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 13:25:37,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 13:25:37,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 13:25:37,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-16 13:25:37,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-16 13:25:37,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-16 13:25:37,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-16 13:25:37,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-BasicCegarLoop.epf [2022-02-16 13:25:37,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 13:25:37,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 13:25:37,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 13:25:37,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 13:25:37,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 13:25:37,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 13:25:37,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 13:25:37,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 13:25:37,502 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 13:25:37,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 13:25:37,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 13:25:37,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 13:25:37,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 13:25:37,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 13:25:37,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 13:25:37,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 13:25:37,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 13:25:37,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 13:25:37,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 13:25:37,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 13:25:37,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 13:25:37,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 13:25:37,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 13:25:37,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 13:25:37,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 13:25:37,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 13:25:37,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 13:25:37,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 13:25:37,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 13:25:37,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 13:25:37,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 13:25:37,508 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 13:25:37,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 13:25:37,508 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-16 13:25:37,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 13:25:37,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 13:25:37,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 13:25:37,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 13:25:37,694 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-16 13:25:37,694 INFO L275 PluginConnector]: CDTParser initialized [2022-02-16 13:25:37,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c [2022-02-16 13:25:37,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c755241d/0ca2aee731584553934f69d373527180/FLAG6c8297702 [2022-02-16 13:25:38,101 INFO L306 CDTParser]: Found 1 translation units. [2022-02-16 13:25:38,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c [2022-02-16 13:25:38,101 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-16 13:25:38,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c755241d/0ca2aee731584553934f69d373527180/FLAG6c8297702 [2022-02-16 13:25:38,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c755241d/0ca2aee731584553934f69d373527180 [2022-02-16 13:25:38,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 13:25:38,135 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-16 13:25:38,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-16 13:25:38,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-16 13:25:38,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-16 13:25:38,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3078cbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38, skipping insertion in model container [2022-02-16 13:25:38,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-16 13:25:38,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-16 13:25:38,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 13:25:38,271 INFO L203 MainTranslator]: Completed pre-run [2022-02-16 13:25:38,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 13:25:38,289 INFO L208 MainTranslator]: Completed translation [2022-02-16 13:25:38,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38 WrapperNode [2022-02-16 13:25:38,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-16 13:25:38,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 13:25:38,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 13:25:38,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 13:25:38,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,310 INFO L137 Inliner]: procedures = 10, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-02-16 13:25:38,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 13:25:38,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 13:25:38,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 13:25:38,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 13:25:38,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 13:25:38,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 13:25:38,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 13:25:38,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 13:25:38,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (1/1) ... [2022-02-16 13:25:38,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 13:25:38,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 13:25:38,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-16 13:25:38,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-16 13:25:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-16 13:25:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-16 13:25:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-16 13:25:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-16 13:25:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-16 13:25:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 13:25:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 13:25:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-16 13:25:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-16 13:25:38,380 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 13:25:38,425 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 13:25:38,426 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 13:25:38,485 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 13:25:38,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 13:25:38,489 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-16 13:25:38,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:25:38 BoogieIcfgContainer [2022-02-16 13:25:38,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 13:25:38,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 13:25:38,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 13:25:38,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 13:25:38,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:25:38" (1/3) ... [2022-02-16 13:25:38,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa1654f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:25:38, skipping insertion in model container [2022-02-16 13:25:38,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:25:38" (2/3) ... [2022-02-16 13:25:38,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa1654f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:25:38, skipping insertion in model container [2022-02-16 13:25:38,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:25:38" (3/3) ... [2022-02-16 13:25:38,496 INFO L111 eAbstractionObserver]: Analyzing ICFG 11b-double-end.c [2022-02-16 13:25:38,499 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 13:25:38,499 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 13:25:38,499 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 13:25:38,499 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 13:25:38,522 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,522 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,522 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,522 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,523 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,523 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,523 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,523 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,536 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,536 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,536 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,536 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,539 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,539 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,539 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,539 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 13:25:38,541 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-16 13:25:38,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 13:25:38,593 INFO L339 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 13:25:38,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-16 13:25:38,602 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 30 transitions, 65 flow [2022-02-16 13:25:38,632 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 43 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:25:38,680 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 84 transitions and produced 62 states. [2022-02-16 13:25:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 50 states have (on average 1.22) internal successors, (61), 61 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:25:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-16 13:25:38,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:25:38,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:25:38,690 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-16 13:25:38,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:25:38,694 INFO L85 PathProgramCache]: Analyzing trace with hash -498706984, now seen corresponding path program 1 times [2022-02-16 13:25:38,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:25:38,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364763903] [2022-02-16 13:25:38,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:25:38,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:25:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:25:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:25:38,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:25:38,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364763903] [2022-02-16 13:25:38,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364763903] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:25:38,823 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:25:38,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 13:25:38,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293248144] [2022-02-16 13:25:38,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:25:38,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-16 13:25:38,827 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:25:38,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-16 13:25:38,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-16 13:25:38,846 INFO L87 Difference]: Start difference. First operand has 62 states, 50 states have (on average 1.22) internal successors, (61), 61 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:25:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:25:38,882 INFO L93 Difference]: Finished difference Result 54 states and 53 transitions. [2022-02-16 13:25:38,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 13:25:38,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-16 13:25:38,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:25:38,889 INFO L225 Difference]: With dead ends: 54 [2022-02-16 13:25:38,889 INFO L226 Difference]: Without dead ends: 30 [2022-02-16 13:25:38,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-16 13:25:38,892 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:25:38,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:25:38,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-16 13:25:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2022-02-16 13:25:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:25:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2022-02-16 13:25:38,914 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 19 [2022-02-16 13:25:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:25:38,914 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2022-02-16 13:25:38,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:25:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-02-16 13:25:38,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-16 13:25:38,915 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:25:38,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:25:38,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 13:25:38,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-16 13:25:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:25:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1778955319, now seen corresponding path program 1 times [2022-02-16 13:25:38,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:25:38,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761254796] [2022-02-16 13:25:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:25:38,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:25:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 13:25:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 13:25:38,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 13:25:38,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761254796] [2022-02-16 13:25:38,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761254796] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 13:25:38,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 13:25:38,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-16 13:25:38,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388772613] [2022-02-16 13:25:38,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 13:25:38,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 13:25:38,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 13:25:38,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 13:25:38,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 13:25:38,947 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:25:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-16 13:25:38,955 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2022-02-16 13:25:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 13:25:38,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-16 13:25:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-16 13:25:38,957 INFO L225 Difference]: With dead ends: 27 [2022-02-16 13:25:38,957 INFO L226 Difference]: Without dead ends: 24 [2022-02-16 13:25:38,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 13:25:38,958 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-16 13:25:38,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-16 13:25:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-16 13:25:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-02-16 13:25:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0) internal successors, (23), 23 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:25:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2022-02-16 13:25:38,962 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 21 [2022-02-16 13:25:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-16 13:25:38,962 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2022-02-16 13:25:38,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 13:25:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2022-02-16 13:25:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-16 13:25:38,963 INFO L506 BasicCegarLoop]: Found error trace [2022-02-16 13:25:38,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-16 13:25:38,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 13:25:38,963 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-16 13:25:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 13:25:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1779045529, now seen corresponding path program 2 times [2022-02-16 13:25:38,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 13:25:38,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300456920] [2022-02-16 13:25:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 13:25:38,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 13:25:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 13:25:38,981 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-16 13:25:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 13:25:39,002 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-16 13:25:39,002 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-16 13:25:39,003 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-16 13:25:39,004 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-02-16 13:25:39,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-16 13:25:39,006 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2022-02-16 13:25:39,009 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-16 13:25:39,009 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-16 13:25:39,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 01:25:39 BasicIcfg [2022-02-16 13:25:39,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-16 13:25:39,035 INFO L158 Benchmark]: Toolchain (without parser) took 900.33ms. Allocated memory is still 192.9MB. Free memory was 141.3MB in the beginning and 120.1MB in the end (delta: 21.2MB). Peak memory consumption was 20.9MB. Max. memory is 8.0GB. [2022-02-16 13:25:39,036 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-16 13:25:39,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.65ms. Allocated memory is still 192.9MB. Free memory was 141.1MB in the beginning and 168.9MB in the end (delta: -27.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-16 13:25:39,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.71ms. Allocated memory is still 192.9MB. Free memory was 168.9MB in the beginning and 167.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-16 13:25:39,037 INFO L158 Benchmark]: Boogie Preprocessor took 16.26ms. Allocated memory is still 192.9MB. Free memory was 167.3MB in the beginning and 166.8MB in the end (delta: 524.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-16 13:25:39,037 INFO L158 Benchmark]: RCFGBuilder took 161.64ms. Allocated memory is still 192.9MB. Free memory was 166.8MB in the beginning and 157.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-16 13:25:39,037 INFO L158 Benchmark]: TraceAbstraction took 543.22ms. Allocated memory is still 192.9MB. Free memory was 156.8MB in the beginning and 120.1MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2022-02-16 13:25:39,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 152.65ms. Allocated memory is still 192.9MB. Free memory was 141.1MB in the beginning and 168.9MB in the end (delta: -27.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.71ms. Allocated memory is still 192.9MB. Free memory was 168.9MB in the beginning and 167.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.26ms. Allocated memory is still 192.9MB. Free memory was 167.3MB in the beginning and 166.8MB in the end (delta: 524.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 161.64ms. Allocated memory is still 192.9MB. Free memory was 166.8MB in the beginning and 157.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 543.22ms. Allocated memory is still 192.9MB. Free memory was 156.8MB in the beginning and 120.1MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 32]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = -1; VAL [x=-1] [L23] 0 pthread_t threadId; VAL [threadId={2:0}, x=-1] [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, pthread_create(&threadId, NULL, &foo, NULL)=-1, threadId={2:0}, x=-1] [L27] 0 x = 1 VAL [arg={0:0}, threadId={2:0}, x=1] [L18] 1 x = 0 VAL [arg={0:0}, arg={0:0}, x=0] [L29] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=1] [L32] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=1] - UnprovableResult [Line: 24]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 51 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-16 13:25:39,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...