/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 17:04:11,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:04:11,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:04:11,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:04:11,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 17:04:11,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 17:04:11,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 17:04:11,926 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-FA-NoLbe.epf [2022-03-01 17:04:11,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:04:11,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:04:11,943 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:04:11,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:04:11,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:04:11,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:04:11,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:04:11,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:04:11,944 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:04:11,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:04:11,944 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:04:11,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:04:11,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:04:11,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:04:11,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:04:11,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:04:11,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:04:11,945 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:04:11,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:04:11,945 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:04:11,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:04:11,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:04:11,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:04:11,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:04:11,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:04:11,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:04:11,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:04:11,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:04:11,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:04:11,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:04:11,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:04:11,947 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:04:11,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:04:11,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:04:12,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:04:12,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:04:12,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:04:12,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 17:04:12,155 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 17:04:12,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2022-03-01 17:04:12,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c029e0895/f1e1b31235f54572b2ef285266e3b6b4/FLAGe8c732f22 [2022-03-01 17:04:12,506 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 17:04:12,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2022-03-01 17:04:12,506 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-01 17:04:12,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c029e0895/f1e1b31235f54572b2ef285266e3b6b4/FLAGe8c732f22 [2022-03-01 17:04:12,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c029e0895/f1e1b31235f54572b2ef285266e3b6b4 [2022-03-01 17:04:12,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:04:12,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 17:04:12,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 17:04:12,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 17:04:12,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 17:04:12,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 05:04:12" (1/1) ... [2022-03-01 17:04:12,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3717cc05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:12, skipping insertion in model container [2022-03-01 17:04:12,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 05:04:12" (1/1) ... [2022-03-01 17:04:12,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 17:04:12,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 17:04:13,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 17:04:13,095 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 17:04:13,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 17:04:13,112 INFO L208 MainTranslator]: Completed translation [2022-03-01 17:04:13,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13 WrapperNode [2022-03-01 17:04:13,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 17:04:13,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:04:13,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:04:13,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:04:13,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (1/1) ... [2022-03-01 17:04:13,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (1/1) ... [2022-03-01 17:04:13,134 INFO L137 Inliner]: procedures = 10, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-03-01 17:04:13,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:04:13,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:04:13,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:04:13,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:04:13,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (1/1) ... [2022-03-01 17:04:13,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (1/1) ... [2022-03-01 17:04:13,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (1/1) ... [2022-03-01 17:04:13,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (1/1) ... [2022-03-01 17:04:13,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (1/1) ... [2022-03-01 17:04:13,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (1/1) ... [2022-03-01 17:04:13,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (1/1) ... [2022-03-01 17:04:13,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:04:13,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:04:13,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:04:13,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:04:13,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (1/1) ... [2022-03-01 17:04:13,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:04:13,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:13,169 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) [2022-03-01 17:04:13,179 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 [2022-03-01 17:04:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 17:04:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 17:04:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 17:04:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-01 17:04:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-01 17:04:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:04:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:04:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 17:04:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 17:04:13,205 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:04:13,248 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:04:13,249 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:04:13,358 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:04:13,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:04:13,371 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 17:04:13,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:04:13 BoogieIcfgContainer [2022-03-01 17:04:13,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:04:13,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:04:13,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:04:13,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:04:13,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 05:04:12" (1/3) ... [2022-03-01 17:04:13,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f527745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:04:13, skipping insertion in model container [2022-03-01 17:04:13,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:04:13" (2/3) ... [2022-03-01 17:04:13,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f527745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:04:13, skipping insertion in model container [2022-03-01 17:04:13,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:04:13" (3/3) ... [2022-03-01 17:04:13,377 INFO L111 eAbstractionObserver]: Analyzing ICFG 14b-subsequent-blocks.c [2022-03-01 17:04:13,380 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:04:13,380 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:04:13,380 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:04:13,381 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:04:13,407 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,408 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,408 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,408 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,408 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,408 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,408 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,408 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,409 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,409 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,409 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,409 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,412 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,412 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,412 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,412 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:13,413 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-01 17:04:13,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:04:13,459 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 17:04:13,460 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-01 17:04:13,466 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 30 transitions, 65 flow [2022-03-01 17:04:13,484 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) [2022-03-01 17:04:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 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) [2022-03-01 17:04:13,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-01 17:04:13,490 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:13,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:13,491 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 17:04:13,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:13,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1133540566, now seen corresponding path program 1 times [2022-03-01 17:04:13,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:13,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598183147] [2022-03-01 17:04:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:13,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:13,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:13,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598183147] [2022-03-01 17:04:13,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598183147] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:04:13,658 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:04:13,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:04:13,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594727142] [2022-03-01 17:04:13,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:04:13,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 17:04:13,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:13,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 17:04:13,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 17:04:13,685 INFO L87 Difference]: Start difference. First operand 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) 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) [2022-03-01 17:04:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:13,709 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2022-03-01 17:04:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 17:04:13,711 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 [2022-03-01 17:04:13,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:13,716 INFO L225 Difference]: With dead ends: 48 [2022-03-01 17:04:13,716 INFO L226 Difference]: Without dead ends: 33 [2022-03-01 17:04:13,717 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 [2022-03-01 17:04:13,719 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:04:13,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:04:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-01 17:04:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-01 17:04:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:04:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-03-01 17:04:13,742 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 19 [2022-03-01 17:04:13,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:13,742 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-03-01 17:04:13,743 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) [2022-03-01 17:04:13,743 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-03-01 17:04:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:04:13,743 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:13,743 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] [2022-03-01 17:04:13,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:04:13,744 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 17:04:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:13,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1437334733, now seen corresponding path program 1 times [2022-03-01 17:04:13,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:13,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623531233] [2022-03-01 17:04:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:13,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 17:04:13,771 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-01 17:04:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 17:04:13,797 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-01 17:04:13,797 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-01 17:04:13,798 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-03-01 17:04:13,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-01 17:04:13,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 17:04:13,801 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-01 17:04:13,805 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 17:04:13,805 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 17:04:13,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 05:04:13 BasicIcfg [2022-03-01 17:04:13,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 17:04:13,819 INFO L158 Benchmark]: Toolchain (without parser) took 875.93ms. Allocated memory was 190.8MB in the beginning and 281.0MB in the end (delta: 90.2MB). Free memory was 132.5MB in the beginning and 209.7MB in the end (delta: -77.2MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. [2022-03-01 17:04:13,820 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory is still 150.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:04:13,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.55ms. Allocated memory was 190.8MB in the beginning and 281.0MB in the end (delta: 90.2MB). Free memory was 132.4MB in the beginning and 252.7MB in the end (delta: -120.3MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. [2022-03-01 17:04:13,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.96ms. Allocated memory is still 281.0MB. Free memory was 252.7MB in the beginning and 251.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 17:04:13,821 INFO L158 Benchmark]: Boogie Preprocessor took 10.49ms. Allocated memory is still 281.0MB. Free memory was 251.1MB in the beginning and 250.6MB in the end (delta: 524.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 17:04:13,821 INFO L158 Benchmark]: RCFGBuilder took 226.15ms. Allocated memory is still 281.0MB. Free memory was 250.0MB in the beginning and 239.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-01 17:04:13,821 INFO L158 Benchmark]: TraceAbstraction took 445.81ms. Allocated memory is still 281.0MB. Free memory was 238.5MB in the beginning and 209.7MB in the end (delta: 28.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-03-01 17:04:13,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory is still 150.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.55ms. Allocated memory was 190.8MB in the beginning and 281.0MB in the end (delta: 90.2MB). Free memory was 132.4MB in the beginning and 252.7MB in the end (delta: -120.3MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.96ms. Allocated memory is still 281.0MB. Free memory was 252.7MB in the beginning and 251.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.49ms. Allocated memory is still 281.0MB. Free memory was 251.1MB in the beginning and 250.6MB in the end (delta: 524.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 226.15ms. Allocated memory is still 281.0MB. Free memory was 250.0MB in the beginning and 239.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 445.81ms. Allocated memory is still 281.0MB. Free memory was 238.5MB in the beginning and 209.7MB in the end (delta: 28.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 35]: 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 [L28] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=2] [L18] 1 x = 0 VAL [arg={0:0}, arg={0:0}, x=0] [L31] 0 x = x + 1 [L32] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=2] [L35] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=2] - 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: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 28 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-03-01 17:04:13,854 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...