/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-MCRwithoutDepranks-Lazy.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-wip.dk.mcr-reduction-44898dd [2022-02-17 02:44:27,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-17 02:44:27,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-17 02:44:27,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-17 02:44:27,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-17 02:44:27,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-17 02:44:27,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-17 02:44:27,723 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-MCRwithoutDepranks-Lazy.epf [2022-02-17 02:44:27,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-17 02:44:27,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-17 02:44:27,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-17 02:44:27,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-17 02:44:27,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-17 02:44:27,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-17 02:44:27,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-17 02:44:27,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-17 02:44:27,739 INFO L138 SettingsManager]: * Use SBE=true [2022-02-17 02:44:27,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-17 02:44:27,740 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-17 02:44:27,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-17 02:44:27,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-17 02:44:27,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-17 02:44:27,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-17 02:44:27,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-17 02:44:27,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-17 02:44:27,740 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-17 02:44:27,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-17 02:44:27,741 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-17 02:44:27,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-17 02:44:27,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-17 02:44:27,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-17 02:44:27,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-17 02:44:27,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-17 02:44:27,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-17 02:44:27,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-17 02:44:27,741 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-17 02:44:27,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-17 02:44:27,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-17 02:44:27,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-17 02:44:27,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-17 02:44:27,742 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-17 02:44:27,742 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-17 02:44:27,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-17 02:44:27,742 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-17 02:44:27,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-17 02:44:27,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-17 02:44:27,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-17 02:44:27,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-17 02:44:27,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-17 02:44:27,944 INFO L275 PluginConnector]: CDTParser initialized [2022-02-17 02:44:27,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2022-02-17 02:44:28,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2fb793af/ed5ce18aa4cc4c08b5c38f018a6a9355/FLAGd04593ec7 [2022-02-17 02:44:28,472 INFO L306 CDTParser]: Found 1 translation units. [2022-02-17 02:44:28,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2022-02-17 02:44:28,472 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-17 02:44:28,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2fb793af/ed5ce18aa4cc4c08b5c38f018a6a9355/FLAGd04593ec7 [2022-02-17 02:44:28,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2fb793af/ed5ce18aa4cc4c08b5c38f018a6a9355 [2022-02-17 02:44:28,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-17 02:44:28,870 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-17 02:44:28,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-17 02:44:28,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-17 02:44:28,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-17 02:44:28,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:44:28" (1/1) ... [2022-02-17 02:44:28,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e82070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:28, skipping insertion in model container [2022-02-17 02:44:28,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:44:28" (1/1) ... [2022-02-17 02:44:28,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-17 02:44:28,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-17 02:44:29,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-17 02:44:29,077 INFO L203 MainTranslator]: Completed pre-run [2022-02-17 02:44:29,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-17 02:44:29,103 INFO L208 MainTranslator]: Completed translation [2022-02-17 02:44:29,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29 WrapperNode [2022-02-17 02:44:29,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-17 02:44:29,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-17 02:44:29,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-17 02:44:29,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-17 02:44:29,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (1/1) ... [2022-02-17 02:44:29,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (1/1) ... [2022-02-17 02:44:29,139 INFO L137 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-02-17 02:44:29,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-17 02:44:29,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-17 02:44:29,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-17 02:44:29,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-17 02:44:29,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (1/1) ... [2022-02-17 02:44:29,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (1/1) ... [2022-02-17 02:44:29,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (1/1) ... [2022-02-17 02:44:29,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (1/1) ... [2022-02-17 02:44:29,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (1/1) ... [2022-02-17 02:44:29,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (1/1) ... [2022-02-17 02:44:29,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (1/1) ... [2022-02-17 02:44:29,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-17 02:44:29,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-17 02:44:29,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-17 02:44:29,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-17 02:44:29,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (1/1) ... [2022-02-17 02:44:29,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-17 02:44:29,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-17 02:44:29,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-17 02:44:29,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-17 02:44:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-17 02:44:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-17 02:44:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-17 02:44:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-17 02:44:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-17 02:44:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-17 02:44:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-17 02:44:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-17 02:44:29,278 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-17 02:44:29,332 INFO L234 CfgBuilder]: Building ICFG [2022-02-17 02:44:29,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-17 02:44:29,415 INFO L275 CfgBuilder]: Performing block encoding [2022-02-17 02:44:29,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-17 02:44:29,421 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-17 02:44:29,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:44:29 BoogieIcfgContainer [2022-02-17 02:44:29,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-17 02:44:29,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-17 02:44:29,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-17 02:44:29,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-17 02:44:29,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 02:44:28" (1/3) ... [2022-02-17 02:44:29,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0145b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:44:29, skipping insertion in model container [2022-02-17 02:44:29,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:29" (2/3) ... [2022-02-17 02:44:29,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0145b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:44:29, skipping insertion in model container [2022-02-17 02:44:29,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:44:29" (3/3) ... [2022-02-17 02:44:29,430 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-end-no-begin.c [2022-02-17 02:44:29,434 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-17 02:44:29,435 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-17 02:44:29,435 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-17 02:44:29,435 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-17 02:44:29,452 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,452 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,452 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,452 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,453 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,453 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,453 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,453 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,454 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,454 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,454 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,454 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,457 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,457 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,457 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,458 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-17 02:44:29,459 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-17 02:44:29,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-17 02:44:29,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-17 02:44:29,513 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-17 02:44:29,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-17 02:44:29,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-17 02:44:29,576 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=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-17 02:44:29,576 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-17 02:44:29,656 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 25 states. [2022-02-17 02:44:29,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-17 02:44:29,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-17 02:44:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2094865671, now seen corresponding path program 1 times [2022-02-17 02:44:29,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-17 02:44:29,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967793098] [2022-02-17 02:44:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-17 02:44:29,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-17 02:44:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-17 02:44:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-17 02:44:29,865 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-17 02:44:29,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967793098] [2022-02-17 02:44:29,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967793098] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-17 02:44:29,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-17 02:44:29,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-17 02:44:29,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460981181] [2022-02-17 02:44:29,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-17 02:44:29,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-17 02:44:29,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-17 02:44:29,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-17 02:44:29,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-17 02:44:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-17 02:44:29,898 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-17 02:44:29,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-17 02:44:29,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-17 02:44:29,980 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 44 transitions and produced 45 states. [2022-02-17 02:44:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-17 02:44:29,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-17 02:44:29,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-17 02:44:29,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-17 02:44:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1174145594, now seen corresponding path program 1 times [2022-02-17 02:44:29,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-17 02:44:29,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853350807] [2022-02-17 02:44:29,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-17 02:44:29,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-17 02:44:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-17 02:44:30,017 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-17 02:44:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-17 02:44:30,070 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-17 02:44:30,070 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-17 02:44:30,072 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-17 02:44:30,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-02-17 02:44:30,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-17 02:44:30,080 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-17 02:44:30,085 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-17 02:44:30,085 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-17 02:44:30,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 02:44:30 BasicIcfg [2022-02-17 02:44:30,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-17 02:44:30,119 INFO L158 Benchmark]: Toolchain (without parser) took 1245.82ms. Allocated memory is still 184.5MB. Free memory was 130.2MB in the beginning and 115.2MB in the end (delta: 15.0MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. [2022-02-17 02:44:30,121 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-17 02:44:30,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.96ms. Allocated memory is still 184.5MB. Free memory was 160.7MB in the beginning and 159.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-02-17 02:44:30,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.22ms. Allocated memory is still 184.5MB. Free memory was 159.2MB in the beginning and 157.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-17 02:44:30,124 INFO L158 Benchmark]: Boogie Preprocessor took 40.33ms. Allocated memory is still 184.5MB. Free memory was 157.6MB in the beginning and 156.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-17 02:44:30,125 INFO L158 Benchmark]: RCFGBuilder took 238.81ms. Allocated memory is still 184.5MB. Free memory was 156.6MB in the beginning and 147.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-17 02:44:30,127 INFO L158 Benchmark]: TraceAbstraction took 691.48ms. Allocated memory is still 184.5MB. Free memory was 147.1MB in the beginning and 115.2MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-02-17 02:44:30,134 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 213.96ms. Allocated memory is still 184.5MB. Free memory was 160.7MB in the beginning and 159.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.22ms. Allocated memory is still 184.5MB. Free memory was 159.2MB in the beginning and 157.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.33ms. Allocated memory is still 184.5MB. Free memory was 157.6MB in the beginning and 156.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 238.81ms. Allocated memory is still 184.5MB. Free memory was 156.6MB in the beginning and 147.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 691.48ms. Allocated memory is still 184.5MB. Free memory was 147.1MB in the beginning and 115.2MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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: 0.6s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred 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: No data available, 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! [2022-02-17 02:44:30,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-17 02:44:30,392 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...