/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:28:15,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:28:15,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:28:15,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:28:15,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:28:15,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:28:15,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:28:15,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:28:15,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:28:15,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:28:15,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:28:15,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:28:15,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:28:15,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:28:15,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:28:15,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:28:15,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:28:15,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:28:15,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:28:15,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:28:15,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:28:15,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:28:15,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:28:15,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:28:15,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:28:15,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:28:15,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:28:15,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:28:15,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:28:15,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:28:15,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:28:15,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:28:15,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:28:15,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:28:15,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:28:15,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:28:15,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:28:15,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:28:15,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:28:15,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:28:15,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:28:15,877 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:28:15,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:28:15,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:28:15,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:28:15,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:28:15,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:28:15,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:28:15,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:28:15,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:28:15,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:28:15,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:28:15,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:28:15,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:28:15,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:28:15,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:28:15,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:28:15,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:28:15,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:28:15,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:28:15,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:28:15,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:28:15,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:28:15,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:28:15,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:28:15,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:28:15,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:28:16,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:28:16,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:28:16,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:28:16,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:28:16,218 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:28:16,219 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2020-10-16 11:28:16,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/741707841/b1da6514162f4aa9960adcb8c7c046c6/FLAG76572524d [2020-10-16 11:28:16,784 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:28:16,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2020-10-16 11:28:16,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/741707841/b1da6514162f4aa9960adcb8c7c046c6/FLAG76572524d [2020-10-16 11:28:17,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/741707841/b1da6514162f4aa9960adcb8c7c046c6 [2020-10-16 11:28:17,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:28:17,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:28:17,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:28:17,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:28:17,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:28:17,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae464ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17, skipping insertion in model container [2020-10-16 11:28:17,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:28:17,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:28:17,370 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-16 11:28:17,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:28:17,692 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:28:17,720 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-16 11:28:17,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:28:17,860 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:28:17,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17 WrapperNode [2020-10-16 11:28:17,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:28:17,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:28:17,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:28:17,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:28:17,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:28:17,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:28:17,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:28:17,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:28:17,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (1/1) ... [2020-10-16 11:28:17,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:28:17,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:28:17,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:28:17,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:28:17,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:28:17,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 11:28:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:28:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 11:28:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:28:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:28:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 11:28:17,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-16 11:28:17,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-16 11:28:17,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:28:17,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:28:17,999 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:28:18,370 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:28:18,370 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-16 11:28:18,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:28:18 BoogieIcfgContainer [2020-10-16 11:28:18,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:28:18,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:28:18,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:28:18,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:28:18,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:28:17" (1/3) ... [2020-10-16 11:28:18,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238f90fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:28:18, skipping insertion in model container [2020-10-16 11:28:18,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:28:17" (2/3) ... [2020-10-16 11:28:18,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238f90fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:28:18, skipping insertion in model container [2020-10-16 11:28:18,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:28:18" (3/3) ... [2020-10-16 11:28:18,381 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2020-10-16 11:28:18,394 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:28:18,394 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:28:18,403 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:28:18,404 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:28:18,429 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,429 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,429 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,430 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,430 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,431 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,431 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,431 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,432 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,432 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,436 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,437 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,437 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,437 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,438 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,438 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:28:18,448 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-16 11:28:18,462 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 11:28:18,482 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:28:18,482 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:28:18,482 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:28:18,483 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:28:18,483 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:28:18,483 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:28:18,483 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:28:18,484 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:28:18,497 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:28:18,500 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 55 transitions, 118 flow [2020-10-16 11:28:18,503 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 55 transitions, 118 flow [2020-10-16 11:28:18,505 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 56 places, 55 transitions, 118 flow [2020-10-16 11:28:18,545 INFO L129 PetriNetUnfolder]: 3/54 cut-off events. [2020-10-16 11:28:18,545 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 11:28:18,552 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 3/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2020-10-16 11:28:18,554 INFO L117 LiptonReduction]: Number of co-enabled transitions 260 [2020-10-16 11:28:20,094 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-10-16 11:28:20,232 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-16 11:28:20,236 INFO L132 LiptonReduction]: Checked pairs total: 241 [2020-10-16 11:28:20,236 INFO L134 LiptonReduction]: Total number of compositions: 51 [2020-10-16 11:28:20,243 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 28 flow [2020-10-16 11:28:20,252 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13 states. [2020-10-16 11:28:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-16 11:28:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:28:20,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:28:20,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:28:20,262 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:28:20,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:28:20,267 INFO L82 PathProgramCache]: Analyzing trace with hash 215854, now seen corresponding path program 1 times [2020-10-16 11:28:20,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:28:20,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624616217] [2020-10-16 11:28:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:28:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:28:20,396 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:28:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:28:20,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:28:20,443 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:28:20,444 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:28:20,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:28:20,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:28:20 BasicIcfg [2020-10-16 11:28:20,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:28:20,469 INFO L168 Benchmark]: Toolchain (without parser) took 3330.61 ms. Allocated memory was 140.5 MB in the beginning and 245.4 MB in the end (delta: 104.9 MB). Free memory was 101.1 MB in the beginning and 151.6 MB in the end (delta: -50.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:28:20,470 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:28:20,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.63 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 162.2 MB in the end (delta: -61.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-16 11:28:20,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.31 ms. Allocated memory is still 203.4 MB. Free memory was 162.2 MB in the beginning and 160.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:28:20,473 INFO L168 Benchmark]: Boogie Preprocessor took 29.69 ms. Allocated memory is still 203.4 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:28:20,474 INFO L168 Benchmark]: RCFGBuilder took 434.64 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 137.4 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:28:20,475 INFO L168 Benchmark]: TraceAbstraction took 2093.56 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 137.4 MB in the beginning and 151.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:28:20,480 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.63 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 162.2 MB in the end (delta: -61.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.31 ms. Allocated memory is still 203.4 MB. Free memory was 162.2 MB in the beginning and 160.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.69 ms. Allocated memory is still 203.4 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.64 ms. Allocated memory is still 203.4 MB. Free memory was 158.2 MB in the beginning and 137.4 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2093.56 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 137.4 MB in the beginning and 151.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 170 VarBasedMoverChecksPositive, 6 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 6 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 4 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 56 PlacesBefore, 13 PlacesAfterwards, 55 TransitionsBefore, 10 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 51 TotalNumberOfCompositions, 241 MoverChecksTotal - CounterExampleResult [Line: 693]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 pthread_mutex_t lock; [L687] 0 pthread_cond_t cond; [L688] 0 int x; [L698] 0 pthread_t t; [L701] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={2:0}, lock={3:0}, x=0] [L693] 1 !(x == 42) ? __VERIFIER_error() : (void)0 [L693] 1 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, cond={2:0}, lock={3:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, 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, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...