/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-RepeatedVariableLbe.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 [2021-03-25 05:43:12,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:43:12,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:43:12,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:43:12,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:43:12,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:43:12,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:43:12,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:43:12,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:43:12,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:43:12,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:43:12,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:43:12,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:43:12,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:43:12,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:43:12,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:43:12,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:43:12,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:43:12,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:43:12,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:43:12,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:43:12,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:43:12,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:43:12,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:43:12,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:43:12,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:43:12,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:43:12,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:43:12,182 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-RepeatedVariableLbe.epf [2021-03-25 05:43:12,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:43:12,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:43:12,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:43:12,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:43:12,211 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:43:12,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:43:12,212 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:43:12,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:43:12,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:43:12,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:43:12,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:43:12,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:43:12,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:43:12,213 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:43:12,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:43:12,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:43:12,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:43:12,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:43:12,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:43:12,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:43:12,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:43:12,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:43:12,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:43:12,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:43:12,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:43:12,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:43:12,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:43:12,214 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:43:12,214 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:43:12,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:43:12,215 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:43:12,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:43:12,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:43:12,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:43:12,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:43:12,448 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:43:12,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2021-03-25 05:43:12,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d87e66cb/3bbfdb9210d642e98cc711cda64183fc/FLAG36db4dab0 [2021-03-25 05:43:13,111 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:43:13,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar_spurious_wakeup.i [2021-03-25 05:43:13,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d87e66cb/3bbfdb9210d642e98cc711cda64183fc/FLAG36db4dab0 [2021-03-25 05:43:13,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d87e66cb/3bbfdb9210d642e98cc711cda64183fc [2021-03-25 05:43:13,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:43:13,225 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:43:13,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:43:13,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:43:13,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:43:13,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e72b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13, skipping insertion in model container [2021-03-25 05:43:13,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:43:13,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:43:13,331 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-25 05:43:13,437 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] [2021-03-25 05:43:13,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:43:13,461 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:43:13,477 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-25 05:43:13,495 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] [2021-03-25 05:43:13,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:43:13,547 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:43:13,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13 WrapperNode [2021-03-25 05:43:13,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:43:13,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:43:13,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:43:13,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:43:13,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:43:13,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:43:13,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:43:13,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:43:13,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (1/1) ... [2021-03-25 05:43:13,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:43:13,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:43:13,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:43:13,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:43:13,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (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 [2021-03-25 05:43:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 05:43:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:43:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-25 05:43:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:43:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:43:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:43:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-03-25 05:43:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-03-25 05:43:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:43:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:43:13,675 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:43:13,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:43:13,918 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-25 05:43:13,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:43:13 BoogieIcfgContainer [2021-03-25 05:43:13,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:43:13,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:43:13,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:43:13,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:43:13,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:43:13" (1/3) ... [2021-03-25 05:43:13,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38df57ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:43:13, skipping insertion in model container [2021-03-25 05:43:13,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:43:13" (2/3) ... [2021-03-25 05:43:13,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38df57ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:43:13, skipping insertion in model container [2021-03-25 05:43:13,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:43:13" (3/3) ... [2021-03-25 05:43:13,923 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2021-03-25 05:43:13,927 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:43:13,929 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:43:13,930 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:43:13,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,945 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,945 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,945 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,946 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,946 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,946 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,946 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,946 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,946 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,946 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,947 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,947 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,947 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,947 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,947 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,947 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,947 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,948 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,948 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,949 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,949 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,949 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,949 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,949 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,949 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:43:13,954 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-25 05:43:13,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 05:43:13,978 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:43:13,978 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:43:13,978 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:43:13,978 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:43:13,979 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:43:13,979 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:43:13,979 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:43:13,979 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:43:13,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 65 transitions, 138 flow [2021-03-25 05:43:14,004 INFO L129 PetriNetUnfolder]: 3/64 cut-off events. [2021-03-25 05:43:14,004 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:43:14,006 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. [2021-03-25 05:43:14,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 65 transitions, 138 flow [2021-03-25 05:43:14,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 58 transitions, 119 flow [2021-03-25 05:43:14,009 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:43:14,014 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 58 transitions, 119 flow [2021-03-25 05:43:14,016 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 58 transitions, 119 flow [2021-03-25 05:43:14,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 58 transitions, 119 flow [2021-03-25 05:43:14,026 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2021-03-25 05:43:14,026 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:43:14,027 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. [2021-03-25 05:43:14,028 INFO L142 LiptonReduction]: Number of co-enabled transitions 260 [2021-03-25 05:43:16,097 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-03-25 05:43:16,338 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-03-25 05:43:17,030 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2021-03-25 05:43:17,191 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-03-25 05:43:17,548 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2021-03-25 05:43:17,717 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-03-25 05:43:17,720 INFO L154 LiptonReduction]: Checked pairs total: 189 [2021-03-25 05:43:17,720 INFO L156 LiptonReduction]: Total number of compositions: 50 [2021-03-25 05:43:17,722 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3714 [2021-03-25 05:43:17,730 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 05:43:17,730 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:43:17,730 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:43:17,730 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 05:43:17,731 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 05:43:17,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:43:17,734 INFO L82 PathProgramCache]: Analyzing trace with hash 226847201, now seen corresponding path program 1 times [2021-03-25 05:43:17,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:43:17,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472775873] [2021-03-25 05:43:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:43:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 05:43:17,808 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 05:43:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 05:43:17,825 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 05:43:17,837 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 05:43:17,838 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 05:43:17,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:43:17,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:43:17 BasicIcfg [2021-03-25 05:43:17,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:43:17,851 INFO L168 Benchmark]: Toolchain (without parser) took 4625.63 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 234.9 MB in the beginning and 335.8 MB in the end (delta: -100.9 MB). Peak memory consumption was 66.4 MB. Max. memory is 16.0 GB. [2021-03-25 05:43:17,851 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 255.9 MB. Free memory is still 238.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:43:17,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.19 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 234.9 MB in the beginning and 317.1 MB in the end (delta: -82.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:43:17,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.85 ms. Allocated memory is still 352.3 MB. Free memory was 317.1 MB in the beginning and 315.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:43:17,853 INFO L168 Benchmark]: Boogie Preprocessor took 31.30 ms. Allocated memory is still 352.3 MB. Free memory was 315.0 MB in the beginning and 313.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:43:17,853 INFO L168 Benchmark]: RCFGBuilder took 291.90 ms. Allocated memory is still 352.3 MB. Free memory was 313.7 MB in the beginning and 292.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:43:17,853 INFO L168 Benchmark]: TraceAbstraction took 3930.36 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 291.9 MB in the beginning and 335.8 MB in the end (delta: -43.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.0 GB. [2021-03-25 05:43:17,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 255.9 MB. Free memory is still 238.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 323.19 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 234.9 MB in the beginning and 317.1 MB in the end (delta: -82.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.85 ms. Allocated memory is still 352.3 MB. Free memory was 317.1 MB in the beginning and 315.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.30 ms. Allocated memory is still 352.3 MB. Free memory was 315.0 MB in the beginning and 313.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 291.90 ms. Allocated memory is still 352.3 MB. Free memory was 313.7 MB in the beginning and 292.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3930.36 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 291.9 MB in the beginning and 335.8 MB in the end (delta: -43.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3704.3ms, 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: 149, positive: 146, positive conditional: 0, positive unconditional: 146, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 149, positive: 146, positive conditional: 0, positive unconditional: 146, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 179, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 149, unknown conditional: 0, unknown unconditional: 149] , 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={9:0}] [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={9:0}, 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={9:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 3862.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3749.5ms, 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: 2.8ms SsaConstructionTime, 26.1ms 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...