/usr/bin/java -Xmx16000000000 -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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 02:20:34,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 02:20:34,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 02:20:34,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 02:20:34,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 02:20:34,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 02:20:34,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 02:20:34,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 02:20:34,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 02:20:34,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 02:20:34,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 02:20:34,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 02:20:34,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 02:20:34,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 02:20:34,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 02:20:34,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 02:20:34,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 02:20:34,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 02:20:34,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 02:20:34,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 02:20:34,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 02:20:34,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 02:20:34,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 02:20:34,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 02:20:34,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 02:20:34,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 02:20:34,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 02:20:34,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 02:20:34,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 02:20:34,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 02:20:34,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 02:20:34,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 02:20:34,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 02:20:34,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 02:20:34,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 02:20:34,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 02:20:34,202 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-PN-SemanticLbe.epf [2020-10-16 02:20:34,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 02:20:34,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 02:20:34,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 02:20:34,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 02:20:34,258 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 02:20:34,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 02:20:34,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 02:20:34,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 02:20:34,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 02:20:34,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 02:20:34,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 02:20:34,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 02:20:34,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 02:20:34,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 02:20:34,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 02:20:34,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 02:20:34,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 02:20:34,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 02:20:34,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 02:20:34,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 02:20:34,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 02:20:34,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 02:20:34,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 02:20:34,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 02:20:34,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 02:20:34,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 02:20:34,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 02:20:34,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 02:20:34,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 02:20:34,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 02:20:34,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 02:20:34,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 02:20:34,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 02:20:34,607 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 02:20:34,607 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2020-10-16 02:20:34,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f57075bf/afed5066d784443f9d8e04c2f3559e58/FLAG6a1830939 [2020-10-16 02:20:35,227 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 02:20:35,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2020-10-16 02:20:35,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f57075bf/afed5066d784443f9d8e04c2f3559e58/FLAG6a1830939 [2020-10-16 02:20:35,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f57075bf/afed5066d784443f9d8e04c2f3559e58 [2020-10-16 02:20:35,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 02:20:35,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 02:20:35,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 02:20:35,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 02:20:35,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 02:20:35,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:35" (1/1) ... [2020-10-16 02:20:35,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f5f0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:35, skipping insertion in model container [2020-10-16 02:20:35,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:35" (1/1) ... [2020-10-16 02:20:35,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 02:20:35,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 02:20:35,808 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-16 02:20:36,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 02:20:36,133 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 02:20:36,158 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-16 02:20:36,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 02:20:36,280 INFO L208 MainTranslator]: Completed translation [2020-10-16 02:20:36,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36 WrapperNode [2020-10-16 02:20:36,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 02:20:36,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 02:20:36,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 02:20:36,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 02:20:36,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2020-10-16 02:20:36,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2020-10-16 02:20:36,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 02:20:36,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 02:20:36,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 02:20:36,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 02:20:36,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2020-10-16 02:20:36,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2020-10-16 02:20:36,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2020-10-16 02:20:36,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2020-10-16 02:20:36,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2020-10-16 02:20:36,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2020-10-16 02:20:36,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (1/1) ... [2020-10-16 02:20:36,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 02:20:36,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 02:20:36,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 02:20:36,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 02:20:36,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (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 [2020-10-16 02:20:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 02:20:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 02:20:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 02:20:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 02:20:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 02:20:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 02:20:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-16 02:20:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-16 02:20:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 02:20:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 02:20:36,457 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 02:20:36,796 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 02:20:36,797 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-16 02:20:36,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:36 BoogieIcfgContainer [2020-10-16 02:20:36,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 02:20:36,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 02:20:36,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 02:20:36,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 02:20:36,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:20:35" (1/3) ... [2020-10-16 02:20:36,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bee25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:36, skipping insertion in model container [2020-10-16 02:20:36,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:36" (2/3) ... [2020-10-16 02:20:36,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bee25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:36, skipping insertion in model container [2020-10-16 02:20:36,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:36" (3/3) ... [2020-10-16 02:20:36,816 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2020-10-16 02:20:36,825 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 02:20:36,834 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 02:20:36,835 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 02:20:36,865 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,866 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,866 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,866 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,867 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,867 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,867 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,868 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,868 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,868 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,873 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,873 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,873 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,874 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,874 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,874 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:36,901 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 02:20:36,924 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:20:36,925 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:20:36,925 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:20:36,925 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:20:36,925 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:20:36,925 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:20:36,925 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:20:36,926 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:20:36,938 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 56 places, 55 transitions, 118 flow [2020-10-16 02:20:36,976 INFO L129 PetriNetUnfolder]: 3/54 cut-off events. [2020-10-16 02:20:36,977 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 02:20:36,981 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 02:20:36,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 55 transitions, 118 flow [2020-10-16 02:20:36,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 48 transitions, 99 flow [2020-10-16 02:20:36,991 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:20:36,994 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 48 transitions, 99 flow [2020-10-16 02:20:36,997 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 48 transitions, 99 flow [2020-10-16 02:20:36,998 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 48 transitions, 99 flow [2020-10-16 02:20:37,022 INFO L129 PetriNetUnfolder]: 3/48 cut-off events. [2020-10-16 02:20:37,023 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:20:37,024 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 48 events. 3/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2020-10-16 02:20:37,028 INFO L117 LiptonReduction]: Number of co-enabled transitions 260 [2020-10-16 02:20:38,234 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-16 02:20:38,671 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2020-10-16 02:20:38,825 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-16 02:20:38,828 INFO L132 LiptonReduction]: Checked pairs total: 211 [2020-10-16 02:20:38,828 INFO L134 LiptonReduction]: Total number of compositions: 48 [2020-10-16 02:20:38,831 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1842 [2020-10-16 02:20:38,838 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 02:20:38,838 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:20:38,838 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:20:38,839 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:20:38,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:20:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:20:38,847 INFO L82 PathProgramCache]: Analyzing trace with hash 212965, now seen corresponding path program 1 times [2020-10-16 02:20:38,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:20:38,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868160988] [2020-10-16 02:20:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:20:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:20:38,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:20:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:20:39,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:20:39,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 02:20:39,048 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 02:20:39,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 02:20:39,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:20:39 BasicIcfg [2020-10-16 02:20:39,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 02:20:39,076 INFO L168 Benchmark]: Toolchain (without parser) took 3501.58 ms. Allocated memory was 252.7 MB in the beginning and 359.1 MB in the end (delta: 106.4 MB). Free memory was 204.7 MB in the beginning and 163.4 MB in the end (delta: 41.3 MB). Peak memory consumption was 147.7 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:39,077 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:20:39,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.49 ms. Allocated memory was 252.7 MB in the beginning and 317.7 MB in the end (delta: 65.0 MB). Free memory was 204.7 MB in the beginning and 273.3 MB in the end (delta: -68.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:39,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.74 ms. Allocated memory is still 317.7 MB. Free memory was 273.3 MB in the beginning and 270.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:39,080 INFO L168 Benchmark]: Boogie Preprocessor took 33.62 ms. Allocated memory is still 317.7 MB. Free memory was 270.8 MB in the beginning and 268.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:39,081 INFO L168 Benchmark]: RCFGBuilder took 431.06 ms. Allocated memory is still 317.7 MB. Free memory was 268.3 MB in the beginning and 246.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:39,082 INFO L168 Benchmark]: TraceAbstraction took 2273.06 ms. Allocated memory was 317.7 MB in the beginning and 359.1 MB in the end (delta: 41.4 MB). Free memory was 246.4 MB in the beginning and 163.4 MB in the end (delta: 83.0 MB). Peak memory consumption was 124.5 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:39,093 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 706.49 ms. Allocated memory was 252.7 MB in the beginning and 317.7 MB in the end (delta: 65.0 MB). Free memory was 204.7 MB in the beginning and 273.3 MB in the end (delta: -68.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.74 ms. Allocated memory is still 317.7 MB. Free memory was 273.3 MB in the beginning and 270.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 33.62 ms. Allocated memory is still 317.7 MB. Free memory was 270.8 MB in the beginning and 268.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 431.06 ms. Allocated memory is still 317.7 MB. Free memory was 268.3 MB in the beginning and 246.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2273.06 ms. Allocated memory was 317.7 MB in the beginning and 359.1 MB in the end (delta: 41.4 MB). Free memory was 246.4 MB in the beginning and 163.4 MB in the end (delta: 83.0 MB). Peak memory consumption was 124.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 163 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 49 PlacesBefore, 10 PlacesAfterwards, 48 TransitionsBefore, 7 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 48 TotalNumberOfCompositions, 211 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={5:0}, lock={2:0}, x=0] [L693] 1 !(x == 42) ? __VERIFIER_error() : (void)0 [L693] 1 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, cond={5:0}, lock={2:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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...