/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:45:34,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:45:34,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:45:34,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:45:34,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:45:34,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:45:34,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:45:34,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:45:34,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:45:34,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:45:34,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:45:34,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:45:34,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:45:34,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:45:34,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:45:34,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:45:34,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:45:34,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:45:34,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:45:34,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:45:34,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:45:34,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:45:34,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:45:34,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:45:34,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 23:45:34,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 23:45:34,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 23:45:34,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 23:45:34,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 23:45:34,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 23:45:34,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:45:34,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:45:34,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:45:34,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:45:34,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:45:34,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:45:34,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:45:34,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:45:34,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:45:34,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:45:34,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:45:34,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 23:45:34,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:45:34,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:45:34,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:45:34,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:45:34,724 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:45:34,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:45:34,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:45:34,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:45:34,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:45:34,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:45:34,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:45:34,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:45:34,728 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:45:34,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:45:34,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:45:34,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:45:34,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:45:34,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:45:34,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:45:34,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:45:34,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:45:34,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:45:34,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:45:34,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:45:34,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:45:34,731 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:45:35,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:45:35,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:45:35,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:45:35,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:45:35,276 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:45:35,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2021-01-06 23:45:35,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/25ab6fba4/ff6d49aa0cd24cd5bb6424efe8865200/FLAG5871c6824 [2021-01-06 23:45:36,160 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:45:36,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2021-01-06 23:45:36,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/25ab6fba4/ff6d49aa0cd24cd5bb6424efe8865200/FLAG5871c6824 [2021-01-06 23:45:36,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/25ab6fba4/ff6d49aa0cd24cd5bb6424efe8865200 [2021-01-06 23:45:36,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:45:36,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:45:36,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:45:36,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:45:36,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:45:36,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:45:36" (1/1) ... [2021-01-06 23:45:36,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153c5d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:36, skipping insertion in model container [2021-01-06 23:45:36,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:45:36" (1/1) ... [2021-01-06 23:45:36,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:45:36,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:45:36,684 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-01-06 23:45:36,933 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i[30416,30429] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] [2021-01-06 23:45:36,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:45:36,975 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:45:36,991 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-01-06 23:45:37,016 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i[30416,30429] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] [2021-01-06 23:45:37,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:45:37,108 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:45:37,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37 WrapperNode [2021-01-06 23:45:37,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:45:37,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:45:37,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:45:37,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:45:37,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (1/1) ... [2021-01-06 23:45:37,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (1/1) ... [2021-01-06 23:45:37,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:45:37,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:45:37,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:45:37,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:45:37,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (1/1) ... [2021-01-06 23:45:37,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (1/1) ... [2021-01-06 23:45:37,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (1/1) ... [2021-01-06 23:45:37,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (1/1) ... [2021-01-06 23:45:37,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (1/1) ... [2021-01-06 23:45:37,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (1/1) ... [2021-01-06 23:45:37,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (1/1) ... [2021-01-06 23:45:37,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:45:37,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:45:37,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:45:37,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:45:37,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 23:45:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 23:45:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:45:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-01-06 23:45:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:45:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:45:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:45:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-01-06 23:45:37,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-01-06 23:45:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:45:37,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:45:37,311 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 23:45:37,875 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:45:37,875 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-01-06 23:45:37,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:45:37 BoogieIcfgContainer [2021-01-06 23:45:37,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:45:37,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:45:37,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:45:37,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:45:37,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:45:36" (1/3) ... [2021-01-06 23:45:37,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fd4ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:45:37, skipping insertion in model container [2021-01-06 23:45:37,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:45:37" (2/3) ... [2021-01-06 23:45:37,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fd4ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:45:37, skipping insertion in model container [2021-01-06 23:45:37,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:45:37" (3/3) ... [2021-01-06 23:45:37,895 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2021-01-06 23:45:37,903 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:45:37,903 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:45:37,909 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:45:37,910 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:45:37,957 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,957 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,957 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,957 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,958 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,958 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,958 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,958 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,959 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,960 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,961 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,961 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,961 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,962 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,962 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,962 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,963 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,963 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,963 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,963 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,966 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,966 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,967 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,967 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,967 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,967 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:45:37,981 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-01-06 23:45:38,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-06 23:45:38,048 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:45:38,048 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:45:38,048 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:45:38,049 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:45:38,049 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:45:38,049 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:45:38,049 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:45:38,049 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:45:38,073 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:45:38,075 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 65 transitions, 138 flow [2021-01-06 23:45:38,080 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 65 transitions, 138 flow [2021-01-06 23:45:38,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 65 transitions, 138 flow [2021-01-06 23:45:38,167 INFO L129 PetriNetUnfolder]: 3/64 cut-off events. [2021-01-06 23:45:38,167 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-01-06 23:45:38,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 3/64 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. 0/60 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2021-01-06 23:45:38,189 INFO L116 LiptonReduction]: Number of co-enabled transitions 260 [2021-01-06 23:45:40,641 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-01-06 23:45:40,858 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-01-06 23:45:41,712 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2021-01-06 23:45:41,886 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-01-06 23:45:42,254 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2021-01-06 23:45:42,429 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-01-06 23:45:43,132 WARN L197 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 154 [2021-01-06 23:45:43,447 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2021-01-06 23:45:44,210 WARN L197 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 154 [2021-01-06 23:45:44,517 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2021-01-06 23:45:44,520 INFO L131 LiptonReduction]: Checked pairs total: 269 [2021-01-06 23:45:44,520 INFO L133 LiptonReduction]: Total number of compositions: 64 [2021-01-06 23:45:44,528 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 28 flow [2021-01-06 23:45:44,537 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13 states. [2021-01-06 23:45:44,539 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-01-06 23:45:44,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-01-06 23:45:44,545 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:45:44,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-01-06 23:45:44,546 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-01-06 23:45:44,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:45:44,553 INFO L82 PathProgramCache]: Analyzing trace with hash 248218, now seen corresponding path program 1 times [2021-01-06 23:45:44,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:45:44,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290775627] [2021-01-06 23:45:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:45:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 23:45:44,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 23:45:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 23:45:44,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 23:45:44,778 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 23:45:44,779 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 23:45:44,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:45:44,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:45:44 BasicIcfg [2021-01-06 23:45:44,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:45:44,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:45:44,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:45:44,805 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:45:44,805 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:45:37" (3/4) ... [2021-01-06 23:45:44,808 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 23:45:44,851 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-divine/condvar_spurious_wakeup.i-witness.graphml [2021-01-06 23:45:44,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:45:44,853 INFO L168 Benchmark]: Toolchain (without parser) took 8388.48 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 124.5 MB in the beginning and 145.3 MB in the end (delta: -20.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 8.0 GB. [2021-01-06 23:45:44,854 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.1 MB in the end (delta: 99.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:45:44,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.15 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 94.9 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-01-06 23:45:44,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.49 ms. Allocated memory is still 151.0 MB. Free memory was 94.9 MB in the beginning and 92.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:45:44,856 INFO L168 Benchmark]: Boogie Preprocessor took 29.68 ms. Allocated memory is still 151.0 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:45:44,857 INFO L168 Benchmark]: RCFGBuilder took 687.46 ms. Allocated memory is still 151.0 MB. Free memory was 91.4 MB in the beginning and 130.0 MB in the end (delta: -38.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:45:44,858 INFO L168 Benchmark]: TraceAbstraction took 6920.44 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 129.5 MB in the beginning and 147.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:45:44,858 INFO L168 Benchmark]: Witness Printer took 47.09 ms. Allocated memory is still 222.3 MB. Free memory was 146.9 MB in the beginning and 145.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:45:44,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.1 MB in the end (delta: 99.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 642.15 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 94.9 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.49 ms. Allocated memory is still 151.0 MB. Free memory was 94.9 MB in the beginning and 92.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.68 ms. Allocated memory is still 151.0 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 687.46 ms. Allocated memory is still 151.0 MB. Free memory was 91.4 MB in the beginning and 130.0 MB in the end (delta: -38.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6920.44 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 129.5 MB in the beginning and 147.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. * Witness Printer took 47.09 ms. Allocated memory is still 222.3 MB. Free memory was 146.9 MB in the beginning and 145.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 173 VarBasedMoverChecksPositive, 5 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 5 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.4s, 66 PlacesBefore, 13 PlacesAfterwards, 65 TransitionsBefore, 10 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 64 TotalNumberOfCompositions, 269 MoverChecksTotal - CounterExampleResult [Line: 704]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 pthread_mutex_t lock; [L698] 0 pthread_cond_t cond; [L699] 0 int x; [L709] 0 pthread_t t; [L712] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={7:0}, lock={11:0}, x=0] [L704] 1 !(x == 42) ? reach_error() : (void)0 [L704] 1 reach_error() VAL [arg={0:0}, arg={0:0}, cond={7:0}, lock={11:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, 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...