/usr/bin/java -Xmx16000000000 -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/05-end-no-begin.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 03:43:44,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:43:44,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:43:44,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 03:43:44,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 03:43:44,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 03:43:44,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 03:43:44,141 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 [2022-01-18 03:43:44,169 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:43:44,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:43:44,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:43:44,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:43:44,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:43:44,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:43:44,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:43:44,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:43:44,171 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:43:44,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:43:44,172 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:43:44,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:43:44,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:43:44,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:43:44,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:43:44,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:43:44,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:43:44,172 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:43:44,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:43:44,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:43:44,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:43:44,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:43:44,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:43:44,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:43:44,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:43:44,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:43:44,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:43:44,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:43:44,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:43:44,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:43:44,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:43:44,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:43:44,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:43:44,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:43:44,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:43:44,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:43:44,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:43:44,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 03:43:44,367 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 03:43:44,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2022-01-18 03:43:44,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/608299a91/05470eeb97e34974acee3a3fcc956dd9/FLAGd4449d3b5 [2022-01-18 03:43:44,765 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 03:43:44,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2022-01-18 03:43:44,765 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-01-18 03:43:44,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/608299a91/05470eeb97e34974acee3a3fcc956dd9/FLAGd4449d3b5 [2022-01-18 03:43:44,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/608299a91/05470eeb97e34974acee3a3fcc956dd9 [2022-01-18 03:43:44,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:43:44,794 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 03:43:44,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 03:43:44,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 03:43:44,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 03:43:44,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f76a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44, skipping insertion in model container [2022-01-18 03:43:44,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 03:43:44,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 03:43:44,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 03:43:44,935 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 03:43:44,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 03:43:44,949 INFO L208 MainTranslator]: Completed translation [2022-01-18 03:43:44,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44 WrapperNode [2022-01-18 03:43:44,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 03:43:44,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:43:44,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:43:44,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:43:44,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,968 INFO L137 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-01-18 03:43:44,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:43:44,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:43:44,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:43:44,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:43:44,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:43:44,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:43:44,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:43:44,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:43:44,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (1/1) ... [2022-01-18 03:43:44,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:43:44,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:43:45,006 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) [2022-01-18 03:43:45,019 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 [2022-01-18 03:43:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 03:43:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 03:43:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-01-18 03:43:45,035 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-01-18 03:43:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:43:45,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:43:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 03:43:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 03:43:45,037 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 03:43:45,080 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:43:45,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:43:45,136 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:43:45,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:43:45,140 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 03:43:45,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:43:45 BoogieIcfgContainer [2022-01-18 03:43:45,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:43:45,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:43:45,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:43:45,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:43:45,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 03:43:44" (1/3) ... [2022-01-18 03:43:45,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606a5d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:43:45, skipping insertion in model container [2022-01-18 03:43:45,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:43:44" (2/3) ... [2022-01-18 03:43:45,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606a5d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:43:45, skipping insertion in model container [2022-01-18 03:43:45,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:43:45" (3/3) ... [2022-01-18 03:43:45,149 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-end-no-begin.c [2022-01-18 03:43:45,152 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:43:45,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:43:45,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 03:43:45,153 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:43:45,167 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,167 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,167 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,167 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,167 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,168 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,168 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,168 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,168 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,168 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,168 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,169 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,171 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,171 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,171 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,171 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:43:45,172 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:43:45,199 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:43:45,203 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, 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 [2022-01-18 03:43:45,204 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 03:43:45,209 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 30 transitions, 65 flow [2022-01-18 03:43:45,221 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) [2022-01-18 03:43:45,222 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) [2022-01-18 03:43:45,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 03:43:45,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:43:45,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:43:45,227 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:43:45,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:43:45,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2094865671, now seen corresponding path program 1 times [2022-01-18 03:43:45,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:43:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208279750] [2022-01-18 03:43:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:43:45,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:43:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:43:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:43:45,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:43:45,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208279750] [2022-01-18 03:43:45,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208279750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:43:45,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:43:45,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:43:45,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281140840] [2022-01-18 03:43:45,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:43:45,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:43:45,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:43:45,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:43:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:43:45,395 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) [2022-01-18 03:43:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:43:45,418 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2022-01-18 03:43:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 03:43:45,420 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 [2022-01-18 03:43:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:43:45,425 INFO L225 Difference]: With dead ends: 48 [2022-01-18 03:43:45,425 INFO L226 Difference]: Without dead ends: 31 [2022-01-18 03:43:45,426 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 [2022-01-18 03:43:45,428 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:43:45,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 34 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:43:45,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-18 03:43:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-18 03:43:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 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) [2022-01-18 03:43:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-01-18 03:43:45,456 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 19 [2022-01-18 03:43:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:43:45,456 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-01-18 03:43:45,457 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) [2022-01-18 03:43:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-01-18 03:43:45,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:43:45,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:43:45,457 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] [2022-01-18 03:43:45,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 03:43:45,458 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 03:43:45,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:43:45,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1174145594, now seen corresponding path program 1 times [2022-01-18 03:43:45,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:43:45,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263283429] [2022-01-18 03:43:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:43:45,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:43:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:43:45,476 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:43:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:43:45,500 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:43:45,500 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:43:45,501 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-01-18 03:43:45,502 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-01-18 03:43:45,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 03:43:45,504 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-18 03:43:45,511 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 03:43:45,511 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:43:45,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:43:45 BasicIcfg [2022-01-18 03:43:45,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:43:45,541 INFO L158 Benchmark]: Toolchain (without parser) took 746.23ms. Allocated memory was 406.8MB in the beginning and 488.6MB in the end (delta: 81.8MB). Free memory was 351.6MB in the beginning and 419.0MB in the end (delta: -67.4MB). Peak memory consumption was 14.2MB. Max. memory is 16.0GB. [2022-01-18 03:43:45,541 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 406.8MB. Free memory was 370.3MB in the beginning and 370.3MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:43:45,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.97ms. Allocated memory was 406.8MB in the beginning and 488.6MB in the end (delta: 81.8MB). Free memory was 351.4MB in the beginning and 462.0MB in the end (delta: -110.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.0GB. [2022-01-18 03:43:45,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.35ms. Allocated memory is still 488.6MB. Free memory was 462.0MB in the beginning and 460.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:43:45,547 INFO L158 Benchmark]: Boogie Preprocessor took 9.48ms. Allocated memory is still 488.6MB. Free memory was 460.7MB in the beginning and 459.9MB in the end (delta: 819.5kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:43:45,547 INFO L158 Benchmark]: RCFGBuilder took 163.03ms. Allocated memory is still 488.6MB. Free memory was 459.9MB in the beginning and 448.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 03:43:45,548 INFO L158 Benchmark]: TraceAbstraction took 396.61ms. Allocated memory is still 488.6MB. Free memory was 447.3MB in the beginning and 419.0MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2022-01-18 03:43:45,553 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 406.8MB. Free memory was 370.3MB in the beginning and 370.3MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 154.97ms. Allocated memory was 406.8MB in the beginning and 488.6MB in the end (delta: 81.8MB). Free memory was 351.4MB in the beginning and 462.0MB in the end (delta: -110.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 18.35ms. Allocated memory is still 488.6MB. Free memory was 462.0MB in the beginning and 460.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 9.48ms. Allocated memory is still 488.6MB. Free memory was 460.7MB in the beginning and 459.9MB in the end (delta: 819.5kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 163.03ms. Allocated memory is still 488.6MB. Free memory was 459.9MB in the beginning and 448.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 396.61ms. Allocated memory is still 488.6MB. Free memory was 447.3MB in the beginning and 419.0MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * 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: 30]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = 0; VAL [x=0] [L23] 0 pthread_t threadId; VAL [threadId={2:0}, x=0] [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=0] [L26] 0 x = 1 VAL [arg={0:0}, threadId={2:0}, x=1] [L18] 1 x = 2 VAL [arg={0:0}, arg={0:0}, x=2] [L27] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=3] [L30] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, threadId={2:0}, x=3] - 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: 0.3s, 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, 31 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 23 mSDtfsCounter, 6 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, 0.0s 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! [2022-01-18 03:43:45,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...