/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-POR-DelaySleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-b7a4f01caba76767183cf06280be652b0b124764-b7a4f01 [2021-06-07 14:09:05,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-07 14:09:05,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-07 14:09:05,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-07 14:09:05,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-07 14:09:05,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-07 14:09:05,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-07 14:09:05,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-07 14:09:05,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-07 14:09:05,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-07 14:09:05,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-07 14:09:05,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-07 14:09:05,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-07 14:09:05,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-07 14:09:05,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-07 14:09:05,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-07 14:09:05,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-07 14:09:05,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-07 14:09:05,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-07 14:09:05,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-07 14:09:05,108 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-POR-DelaySleep-NoLbe-Lockstep.epf [2021-06-07 14:09:05,143 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-07 14:09:05,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-07 14:09:05,144 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-07 14:09:05,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-07 14:09:05,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-07 14:09:05,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-07 14:09:05,147 INFO L138 SettingsManager]: * Use SBE=true [2021-06-07 14:09:05,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-07 14:09:05,147 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-07 14:09:05,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-07 14:09:05,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-07 14:09:05,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-07 14:09:05,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-07 14:09:05,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-07 14:09:05,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-07 14:09:05,149 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-07 14:09:05,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-07 14:09:05,149 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-07 14:09:05,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-07 14:09:05,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-07 14:09:05,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-07 14:09:05,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-07 14:09:05,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-07 14:09:05,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 14:09:05,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-07 14:09:05,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-07 14:09:05,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-07 14:09:05,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-07 14:09:05,151 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-07 14:09:05,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-07 14:09:05,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-07 14:09:05,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-07 14:09:05,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-07 14:09:05,152 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-07 14:09:05,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-07 14:09:05,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-07 14:09:05,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-07 14:09:05,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-07 14:09:05,534 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-07 14:09:05,534 INFO L275 PluginConnector]: CDTParser initialized [2021-06-07 14:09:05,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c [2021-06-07 14:09:05,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a108acfa/169a6db00e104a9db18a1e412f5afae9/FLAG336e1f991 [2021-06-07 14:09:06,032 INFO L306 CDTParser]: Found 1 translation units. [2021-06-07 14:09:06,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c [2021-06-07 14:09:06,033 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-07 14:09:06,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a108acfa/169a6db00e104a9db18a1e412f5afae9/FLAG336e1f991 [2021-06-07 14:09:06,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a108acfa/169a6db00e104a9db18a1e412f5afae9 [2021-06-07 14:09:06,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-07 14:09:06,425 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-07 14:09:06,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-07 14:09:06,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-07 14:09:06,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-07 14:09:06,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a1c65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06, skipping insertion in model container [2021-06-07 14:09:06,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-07 14:09:06,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-07 14:09:06,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-07 14:09:06,620 INFO L203 MainTranslator]: Completed pre-run [2021-06-07 14:09:06,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-07 14:09:06,650 INFO L208 MainTranslator]: Completed translation [2021-06-07 14:09:06,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06 WrapperNode [2021-06-07 14:09:06,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-07 14:09:06,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-07 14:09:06,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-07 14:09:06,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-07 14:09:06,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-07 14:09:06,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-07 14:09:06,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-07 14:09:06,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-07 14:09:06,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (1/1) ... [2021-06-07 14:09:06,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-07 14:09:06,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-07 14:09:06,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-07 14:09:06,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-07 14:09:06,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 14:09:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-07 14:09:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-07 14:09:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-07 14:09:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-07 14:09:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-07 14:09:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-07 14:09:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-07 14:09:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-07 14:09:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-07 14:09:06,803 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-07 14:09:06,984 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-07 14:09:06,985 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-07 14:09:06,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 02:09:06 BoogieIcfgContainer [2021-06-07 14:09:06,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-07 14:09:07,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-07 14:09:07,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-07 14:09:07,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-07 14:09:07,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.06 02:09:06" (1/3) ... [2021-06-07 14:09:07,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51428b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.06 02:09:07, skipping insertion in model container [2021-06-07 14:09:07,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.06 02:09:06" (2/3) ... [2021-06-07 14:09:07,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51428b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.06 02:09:07, skipping insertion in model container [2021-06-07 14:09:07,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 02:09:06" (3/3) ... [2021-06-07 14:09:07,020 INFO L111 eAbstractionObserver]: Analyzing ICFG 11b-double-end.c [2021-06-07 14:09:07,025 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-07 14:09:07,025 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-07 14:09:07,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-07 14:09:07,026 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-07 14:09:07,063 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,063 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,063 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,063 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,064 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,064 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,064 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,064 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,065 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,065 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,065 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,065 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,067 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,067 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,067 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,067 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-07 14:09:07,071 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-07 14:09:07,087 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-06-07 14:09:07,152 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-07 14:09:07,153 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-07 14:09:07,153 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-07 14:09:07,153 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-07 14:09:07,153 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-07 14:09:07,153 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-07 14:09:07,153 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-07 14:09:07,153 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-07 14:09:07,253 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 14:09:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 14:09:07,262 INFO L82 PathProgramCache]: Analyzing trace with hash 17685754, now seen corresponding path program 1 times [2021-06-07 14:09:07,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 14:09:07,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232876841] [2021-06-07 14:09:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 14:09:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 14:09:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 14:09:07,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 14:09:07,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232876841] [2021-06-07 14:09:07,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232876841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 14:09:07,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 14:09:07,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-07 14:09:07,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889046191] [2021-06-07 14:09:07,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-07 14:09:07,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 14:09:07,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-07 14:09:07,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-07 14:09:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:09:07,479 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 14:09:07,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-06-07 14:09:07,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 14:09:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-07 14:09:07,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-07 14:09:07,570 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 14:09:07,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 14:09:07,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1390415612, now seen corresponding path program 1 times [2021-06-07 14:09:07,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 14:09:07,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366801928] [2021-06-07 14:09:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 14:09:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-07 14:09:07,604 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-07 14:09:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-07 14:09:07,613 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-07 14:09:07,628 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-07 14:09:07,628 INFO L655 BasicCegarLoop]: Counterexample might be feasible [2021-06-07 14:09:07,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-07 14:09:07,635 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-07 14:09:07,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.06 02:09:07 BasicIcfg [2021-06-07 14:09:07,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-07 14:09:07,654 INFO L168 Benchmark]: Toolchain (without parser) took 1229.19 ms. Allocated memory is still 369.1 MB. Free memory was 331.6 MB in the beginning and 307.1 MB in the end (delta: 24.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.0 GB. [2021-06-07 14:09:07,654 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 369.1 MB. Free memory is still 349.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-07 14:09:07,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.85 ms. Allocated memory is still 369.1 MB. Free memory was 331.4 MB in the beginning and 353.1 MB in the end (delta: -21.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. [2021-06-07 14:09:07,655 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.96 ms. Allocated memory is still 369.1 MB. Free memory was 353.1 MB in the beginning and 351.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-07 14:09:07,656 INFO L168 Benchmark]: Boogie Preprocessor took 20.64 ms. Allocated memory is still 369.1 MB. Free memory was 351.1 MB in the beginning and 350.1 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-07 14:09:07,657 INFO L168 Benchmark]: RCFGBuilder took 253.39 ms. Allocated memory is still 369.1 MB. Free memory was 350.1 MB in the beginning and 337.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-07 14:09:07,657 INFO L168 Benchmark]: TraceAbstraction took 648.94 ms. Allocated memory is still 369.1 MB. Free memory was 337.5 MB in the beginning and 307.1 MB in the end (delta: 30.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-06-07 14:09:07,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 369.1 MB. Free memory is still 349.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 225.85 ms. Allocated memory is still 369.1 MB. Free memory was 331.4 MB in the beginning and 353.1 MB in the end (delta: -21.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.96 ms. Allocated memory is still 369.1 MB. Free memory was 353.1 MB in the beginning and 351.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.64 ms. Allocated memory is still 369.1 MB. Free memory was 351.1 MB in the beginning and 350.1 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 253.39 ms. Allocated memory is still 369.1 MB. Free memory was 350.1 MB in the beginning and 337.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 648.94 ms. Allocated memory is still 369.1 MB. Free memory was 337.5 MB in the beginning and 307.1 MB in the end (delta: 30.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 31, positive: 26, positive conditional: 26, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 30, positive: 26, positive conditional: 26, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 25, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 4, negative conditional: 1, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 63, positive: 12, positive conditional: 10, positive unconditional: 2, negative: 51, negative conditional: 3, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 30, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 25, unknown conditional: 0, unknown unconditional: 25] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 23, Positive conditional cache size: 1, Positive unconditional cache size: 22, Negative cache size: 4, Negative conditional cache size: 1, Negative unconditional cache size: 3, SemanticConditionEliminator.Independence Queries: [ total: 3, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 4, negative conditional: 1, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 63, positive: 12, positive conditional: 10, positive unconditional: 2, negative: 51, negative conditional: 3, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 23, Positive conditional cache size: 1, Positive unconditional cache size: 22, Negative cache size: 4, Negative conditional cache size: 1, Negative unconditional cache size: 3, Eliminated conditions: 1 ], Maximal queried relation: 1, Independence queries for same thread: 1 - CounterExampleResult [Line: 32]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = -1; VAL [x=-1] [L23] 0 pthread_t threadId; VAL [x=-1] [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=-1] [L27] 0 x = 1 VAL [arg={0:0}, arg={0:0}, x=1] [L18] 1 x = 0 VAL [arg={0:0}, arg={0:0}, x=0] [L19] 1 return (void*)NULL; VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=0] [L29] 0 x = x + 1 VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=1] [L32] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=1] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 534.5ms, OverallIterations: 2, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.4ms, PartialOrderReductionTime: 165.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.5ms SsaConstructionTime, 46.0ms SatisfiabilityAnalysisTime, 83.0ms InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 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! Received shutdown request...