/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 20:24:02,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 20:24:02,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 20:24:02,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 20:24:02,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 20:24:02,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 20:24:02,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 20:24:02,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 20:24:02,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 20:24:02,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 20:24:02,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 20:24:02,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 20:24:02,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 20:24:02,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 20:24:02,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 20:24:02,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 20:24:02,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 20:24:02,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 20:24:02,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 20:24:02,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 20:24:02,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 20:24:02,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 20:24:02,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 20:24:02,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 20:24:02,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 20:24:02,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 20:24:02,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 20:24:02,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 20:24:02,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 20:24:02,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 20:24:02,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 20:24:02,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 20:24:02,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 20:24:02,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 20:24:02,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 20:24:02,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 20:24:02,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 20:24:02,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 20:24:02,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 20:24:02,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 20:24:02,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 20:24:02,749 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 [2021-03-24 20:24:02,791 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 20:24:02,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 20:24:02,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 20:24:02,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 20:24:02,794 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 20:24:02,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 20:24:02,794 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 20:24:02,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 20:24:02,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 20:24:02,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 20:24:02,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 20:24:02,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 20:24:02,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 20:24:02,796 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 20:24:02,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 20:24:02,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 20:24:02,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 20:24:02,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 20:24:02,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 20:24:02,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 20:24:02,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 20:24:02,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 20:24:02,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 20:24:02,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 20:24:02,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 20:24:02,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 20:24:02,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 20:24:02,799 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 20:24:02,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 20:24:03,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 20:24:03,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 20:24:03,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 20:24:03,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 20:24:03,129 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 20:24:03,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2021-03-24 20:24:03,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce30b1bbf/b1c60b123c2d4dcda34318975723a180/FLAGb42f9f298 [2021-03-24 20:24:03,640 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 20:24:03,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2021-03-24 20:24:03,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce30b1bbf/b1c60b123c2d4dcda34318975723a180/FLAGb42f9f298 [2021-03-24 20:24:03,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce30b1bbf/b1c60b123c2d4dcda34318975723a180 [2021-03-24 20:24:03,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 20:24:03,987 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 20:24:03,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 20:24:03,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 20:24:03,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 20:24:03,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 08:24:03" (1/1) ... [2021-03-24 20:24:03,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbb3751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:03, skipping insertion in model container [2021-03-24 20:24:03,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 08:24:03" (1/1) ... [2021-03-24 20:24:04,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 20:24:04,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 20:24:04,142 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-24 20:24:04,277 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i[30416,30429] [2021-03-24 20:24:04,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 20:24:04,293 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 20:24:04,303 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-24 20:24:04,320 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i[30416,30429] [2021-03-24 20:24:04,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 20:24:04,390 INFO L208 MainTranslator]: Completed translation [2021-03-24 20:24:04,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04 WrapperNode [2021-03-24 20:24:04,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 20:24:04,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 20:24:04,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 20:24:04,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 20:24:04,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (1/1) ... [2021-03-24 20:24:04,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (1/1) ... [2021-03-24 20:24:04,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 20:24:04,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 20:24:04,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 20:24:04,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 20:24:04,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (1/1) ... [2021-03-24 20:24:04,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (1/1) ... [2021-03-24 20:24:04,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (1/1) ... [2021-03-24 20:24:04,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (1/1) ... [2021-03-24 20:24:04,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (1/1) ... [2021-03-24 20:24:04,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (1/1) ... [2021-03-24 20:24:04,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (1/1) ... [2021-03-24 20:24:04,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 20:24:04,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 20:24:04,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 20:24:04,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 20:24:04,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 20:24:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 20:24:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 20:24:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-24 20:24:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 20:24:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 20:24:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 20:24:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-03-24 20:24:04,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-03-24 20:24:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 20:24:04,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 20:24:04,552 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 20:24:04,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 20:24:04,920 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-24 20:24:04,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 08:24:04 BoogieIcfgContainer [2021-03-24 20:24:04,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 20:24:04,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 20:24:04,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 20:24:04,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 20:24:04,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 08:24:03" (1/3) ... [2021-03-24 20:24:04,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32848585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 08:24:04, skipping insertion in model container [2021-03-24 20:24:04,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:24:04" (2/3) ... [2021-03-24 20:24:04,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32848585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 08:24:04, skipping insertion in model container [2021-03-24 20:24:04,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 08:24:04" (3/3) ... [2021-03-24 20:24:04,927 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2021-03-24 20:24:04,931 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 20:24:04,935 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 20:24:04,936 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 20:24:04,954 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,954 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,955 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,955 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,955 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,955 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,955 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,955 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,955 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,955 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,956 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,956 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,956 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,956 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,956 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,957 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,957 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,957 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,957 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,957 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,959 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,959 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,959 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,959 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,959 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,959 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:24:04,964 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-24 20:24:04,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 20:24:04,996 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 20:24:04,996 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 20:24:04,996 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 20:24:04,996 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 20:24:04,996 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 20:24:04,996 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 20:24:04,996 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 20:24:04,996 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 20:24:05,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 65 transitions, 138 flow [2021-03-24 20:24:05,031 INFO L129 PetriNetUnfolder]: 3/64 cut-off events. [2021-03-24 20:24:05,031 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 20:24:05,033 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. [2021-03-24 20:24:05,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 65 transitions, 138 flow [2021-03-24 20:24:05,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 58 transitions, 119 flow [2021-03-24 20:24:05,037 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 20:24:05,047 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 58 transitions, 119 flow [2021-03-24 20:24:05,050 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 58 transitions, 119 flow [2021-03-24 20:24:05,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 58 transitions, 119 flow [2021-03-24 20:24:05,062 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2021-03-24 20:24:05,063 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 20:24:05,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 58 events. 3/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2021-03-24 20:24:05,065 INFO L142 LiptonReduction]: Number of co-enabled transitions 260 [2021-03-24 20:24:06,816 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-03-24 20:24:06,998 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-03-24 20:24:07,568 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2021-03-24 20:24:07,722 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-03-24 20:24:07,990 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2021-03-24 20:24:08,111 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-03-24 20:24:08,114 INFO L154 LiptonReduction]: Checked pairs total: 189 [2021-03-24 20:24:08,115 INFO L156 LiptonReduction]: Total number of compositions: 50 [2021-03-24 20:24:08,117 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3081 [2021-03-24 20:24:08,123 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-24 20:24:08,123 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 20:24:08,123 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 20:24:08,124 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 20:24:08,124 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 20:24:08,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 20:24:08,128 INFO L82 PathProgramCache]: Analyzing trace with hash 226847201, now seen corresponding path program 1 times [2021-03-24 20:24:08,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 20:24:08,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858044147] [2021-03-24 20:24:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 20:24:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 20:24:08,275 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 20:24:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 20:24:08,304 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 20:24:08,320 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 20:24:08,320 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 20:24:08,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 20:24:08,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 08:24:08 BasicIcfg [2021-03-24 20:24:08,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 20:24:08,338 INFO L168 Benchmark]: Toolchain (without parser) took 4349.99 ms. Allocated memory was 255.9 MB in the beginning and 450.9 MB in the end (delta: 195.0 MB). Free memory was 235.3 MB in the beginning and 427.3 MB in the end (delta: -192.0 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.0 GB. [2021-03-24 20:24:08,338 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 20:24:08,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.35 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 235.3 MB in the beginning and 333.3 MB in the end (delta: -97.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 20:24:08,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.77 ms. Allocated memory is still 369.1 MB. Free memory was 333.3 MB in the beginning and 331.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 20:24:08,340 INFO L168 Benchmark]: Boogie Preprocessor took 33.25 ms. Allocated memory is still 369.1 MB. Free memory was 331.4 MB in the beginning and 329.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 20:24:08,340 INFO L168 Benchmark]: RCFGBuilder took 436.78 ms. Allocated memory is still 369.1 MB. Free memory was 329.8 MB in the beginning and 346.2 MB in the end (delta: -16.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. [2021-03-24 20:24:08,341 INFO L168 Benchmark]: TraceAbstraction took 3414.06 ms. Allocated memory was 369.1 MB in the beginning and 450.9 MB in the end (delta: 81.8 MB). Free memory was 346.2 MB in the beginning and 427.3 MB in the end (delta: -81.1 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.0 GB. [2021-03-24 20:24:08,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 403.35 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 235.3 MB in the beginning and 333.3 MB in the end (delta: -97.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 57.77 ms. Allocated memory is still 369.1 MB. Free memory was 333.3 MB in the beginning and 331.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.25 ms. Allocated memory is still 369.1 MB. Free memory was 331.4 MB in the beginning and 329.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 436.78 ms. Allocated memory is still 369.1 MB. Free memory was 329.8 MB in the beginning and 346.2 MB in the end (delta: -16.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3414.06 ms. Allocated memory was 369.1 MB in the beginning and 450.9 MB in the end (delta: 81.8 MB). Free memory was 346.2 MB in the beginning and 427.3 MB in the end (delta: -81.1 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3065.2ms, 59 PlacesBefore, 16 PlacesAfterwards, 58 TransitionsBefore, 13 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 50 TotalNumberOfCompositions, 189 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 179, positive: 175, positive conditional: 0, positive unconditional: 175, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 167, positive: 164, positive conditional: 0, positive unconditional: 164, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 167, positive: 164, positive conditional: 0, positive unconditional: 164, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 167, positive: 164, positive conditional: 0, positive unconditional: 164, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 179, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 167, unknown conditional: 0, unknown unconditional: 167] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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; VAL [cond={13:0}, lock={10:0}] [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={13:0}, lock={10:0}, x=0] [L704] 1 !(x == 42) ? reach_error() : (void)0 [L704] 1 reach_error() VAL [arg={0:0}, arg={0:0}, cond={13:0}, lock={10:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 3328.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3124.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.9ms SsaConstructionTime, 70.6ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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...