/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/pthreadExitUnsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 15:21:40,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 15:21:40,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 15:21:40,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 15:21:40,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 15:21:40,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 15:21:40,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 15:21:40,094 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 [2022-03-15 15:21:40,113 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 15:21:40,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 15:21:40,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 15:21:40,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 15:21:40,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 15:21:40,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 15:21:40,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 15:21:40,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 15:21:40,115 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 15:21:40,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 15:21:40,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 15:21:40,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 15:21:40,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 15:21:40,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 15:21:40,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 15:21:40,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 15:21:40,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 15:21:40,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 15:21:40,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 15:21:40,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 15:21:40,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 15:21:40,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 15:21:40,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 15:21:40,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 15:21:40,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 15:21:40,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 15:21:40,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 15:21:40,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 15:21:40,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 15:21:40,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 15:21:40,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 15:21:40,119 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 15:21:40,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 15:21:40,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 15:21:40,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 15:21:40,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 15:21:40,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 15:21:40,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 15:21:40,322 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 15:21:40,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2022-03-15 15:21:40,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16f1d4b1/b6781850213140f8a99dc66e5f140bb2/FLAG7139ede65 [2022-03-15 15:21:40,709 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 15:21:40,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2022-03-15 15:21:40,709 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-15 15:21:40,709 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-15 15:21:40,709 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-15 15:21:40,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16f1d4b1/b6781850213140f8a99dc66e5f140bb2/FLAG7139ede65 [2022-03-15 15:21:40,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16f1d4b1/b6781850213140f8a99dc66e5f140bb2 [2022-03-15 15:21:40,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 15:21:40,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 15:21:40,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 15:21:40,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 15:21:40,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 15:21:40,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7945511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40, skipping insertion in model container [2022-03-15 15:21:40,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 15:21:40,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 15:21:40,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 15:21:40,889 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 15:21:40,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 15:21:40,904 INFO L208 MainTranslator]: Completed translation [2022-03-15 15:21:40,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40 WrapperNode [2022-03-15 15:21:40,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 15:21:40,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 15:21:40,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 15:21:40,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 15:21:40,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,933 INFO L137 Inliner]: procedures = 9, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-03-15 15:21:40,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 15:21:40,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 15:21:40,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 15:21:40,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 15:21:40,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 15:21:40,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 15:21:40,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 15:21:40,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 15:21:40,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (1/1) ... [2022-03-15 15:21:40,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 15:21:40,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:21:40,990 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) [2022-03-15 15:21:40,996 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 [2022-03-15 15:21:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 15:21:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 15:21:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-15 15:21:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-15 15:21:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 15:21:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 15:21:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 15:21:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 15:21:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 15:21:41,023 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 15:21:41,068 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 15:21:41,069 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 15:21:41,148 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 15:21:41,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 15:21:41,152 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-15 15:21:41,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:21:41 BoogieIcfgContainer [2022-03-15 15:21:41,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 15:21:41,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 15:21:41,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 15:21:41,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 15:21:41,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 03:21:40" (1/3) ... [2022-03-15 15:21:41,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1a6712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 03:21:41, skipping insertion in model container [2022-03-15 15:21:41,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:21:40" (2/3) ... [2022-03-15 15:21:41,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1a6712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 03:21:41, skipping insertion in model container [2022-03-15 15:21:41,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:21:41" (3/3) ... [2022-03-15 15:21:41,160 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitUnsafe.c [2022-03-15 15:21:41,163 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 15:21:41,163 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 15:21:41,163 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 15:21:41,163 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 15:21:41,206 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,206 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,206 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,206 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,207 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,207 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,207 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,207 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,207 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,207 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,208 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,208 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,210 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,211 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,211 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,211 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:21:41,215 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-15 15:21:41,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 15:21:41,273 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 [2022-03-15 15:21:41,274 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 15:21:41,285 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 35 transitions, 78 flow [2022-03-15 15:21:41,296 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 37 states have internal predecessors, (57), 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) [2022-03-15 15:21:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 37 states have internal predecessors, (57), 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) [2022-03-15 15:21:41,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 15:21:41,302 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:21:41,302 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, 1, 1, 1] [2022-03-15 15:21:41,303 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 15:21:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:21:41,306 INFO L85 PathProgramCache]: Analyzing trace with hash 771473344, now seen corresponding path program 1 times [2022-03-15 15:21:41,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:21:41,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412164117] [2022-03-15 15:21:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:21:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:21:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:21:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:21:41,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:21:41,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412164117] [2022-03-15 15:21:41,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412164117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 15:21:41,421 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 15:21:41,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 15:21:41,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603901191] [2022-03-15 15:21:41,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 15:21:41,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 15:21:41,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:21:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 15:21:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 15:21:41,444 INFO L87 Difference]: Start difference. First operand has 38 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 37 states have internal predecessors, (57), 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 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2022-03-15 15:21:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:21:41,456 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2022-03-15 15:21:41,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 15:21:41,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2022-03-15 15:21:41,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:21:41,462 INFO L225 Difference]: With dead ends: 38 [2022-03-15 15:21:41,463 INFO L226 Difference]: Without dead ends: 38 [2022-03-15 15:21:41,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 15:21:41,466 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:21:41,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 15:21:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-03-15 15:21:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-03-15 15:21:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 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) [2022-03-15 15:21:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2022-03-15 15:21:41,510 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 24 [2022-03-15 15:21:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:21:41,511 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2022-03-15 15:21:41,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2022-03-15 15:21:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2022-03-15 15:21:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-15 15:21:41,513 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:21:41,514 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, 1, 1, 1, 1] [2022-03-15 15:21:41,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 15:21:41,514 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 15:21:41,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:21:41,517 INFO L85 PathProgramCache]: Analyzing trace with hash -941166398, now seen corresponding path program 1 times [2022-03-15 15:21:41,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:21:41,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123825867] [2022-03-15 15:21:41,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:21:41,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:21:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 15:21:41,552 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 15:21:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 15:21:41,592 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 15:21:41,592 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 15:21:41,594 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-03-15 15:21:41,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-15 15:21:41,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 15:21:41,601 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-15 15:21:41,604 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 15:21:41,604 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 15:21:41,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 03:21:41 BasicIcfg [2022-03-15 15:21:41,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 15:21:41,633 INFO L158 Benchmark]: Toolchain (without parser) took 891.28ms. Allocated memory is still 230.7MB. Free memory was 178.5MB in the beginning and 164.1MB in the end (delta: 14.3MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-03-15 15:21:41,633 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 230.7MB. Free memory is still 196.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 15:21:41,634 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.54ms. Allocated memory is still 230.7MB. Free memory was 178.2MB in the beginning and 205.0MB in the end (delta: -26.8MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-03-15 15:21:41,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.84ms. Allocated memory is still 230.7MB. Free memory was 205.0MB in the beginning and 203.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 15:21:41,638 INFO L158 Benchmark]: Boogie Preprocessor took 26.84ms. Allocated memory is still 230.7MB. Free memory was 203.8MB in the beginning and 202.7MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 15:21:41,644 INFO L158 Benchmark]: RCFGBuilder took 190.05ms. Allocated memory is still 230.7MB. Free memory was 202.7MB in the beginning and 193.5MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-15 15:21:41,644 INFO L158 Benchmark]: TraceAbstraction took 477.98ms. Allocated memory is still 230.7MB. Free memory was 192.9MB in the beginning and 164.1MB in the end (delta: 28.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-03-15 15:21:41,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 230.7MB. Free memory is still 196.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 162.54ms. Allocated memory is still 230.7MB. Free memory was 178.2MB in the beginning and 205.0MB in the end (delta: -26.8MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.84ms. Allocated memory is still 230.7MB. Free memory was 205.0MB in the beginning and 203.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.84ms. Allocated memory is still 230.7MB. Free memory was 203.8MB in the beginning and 202.7MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 190.05ms. Allocated memory is still 230.7MB. Free memory was 202.7MB in the beginning and 193.5MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 477.98ms. Allocated memory is still 230.7MB. Free memory was 192.9MB in the beginning and 164.1MB in the end (delta: 28.7MB). 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: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L24] 0 pthread_t th_id; VAL [th_id={2:0}] [L25] FCALL, FORK 0 pthread_create(&th_id, NULL, foo, NULL) VAL [n={0:0}, pthread_create(&th_id, NULL, foo, NULL)=-1, th_id={2:0}] [L26] 0 \read(th_id) VAL [\read(th_id)=-1, n={0:0}, th_id={2:0}] [L17] COND TRUE 1 1 VAL [n={0:0}, n={0:0}] [L26] FCALL, JOIN 1 pthread_join(th_id, NULL) VAL [\read(th_id)=-1, \result={0:0}, n={0:0}, n={0:0}, th_id={2:0}] [L28] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, n={0:0}, n={0:0}, th_id={2:0}] - UnprovableResult [Line: 25]: 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, 40 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 23 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 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! [2022-03-15 15:21:41,689 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...