./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 829a526a08c17a0464f47e0e793f1cfb84d5a37f ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:12:05,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:12:05,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:12:06,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:12:06,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:12:06,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:12:06,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:12:06,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:12:06,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:12:06,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:12:06,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:12:06,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:12:06,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:12:06,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:12:06,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:12:06,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:12:06,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:12:06,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:12:06,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:12:06,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:12:06,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:12:06,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:12:06,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:12:06,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:12:06,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:12:06,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:12:06,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:12:06,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:12:06,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:12:06,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:12:06,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:12:06,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:12:06,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:12:06,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:12:06,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:12:06,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:12:06,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:12:06,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:12:06,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:12:06,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:12:06,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:12:06,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:12:06,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:12:06,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:12:06,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:12:06,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:12:06,166 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:12:06,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:12:06,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:12:06,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:12:06,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:12:06,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:12:06,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:12:06,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:12:06,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:12:06,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:12:06,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:12:06,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:12:06,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:12:06,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:12:06,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:12:06,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:12:06,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:12:06,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:12:06,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:12:06,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:12:06,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:12:06,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:12:06,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:12:06,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:12:06,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:12:06,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 829a526a08c17a0464f47e0e793f1cfb84d5a37f [2020-10-20 03:12:06,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:12:06,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:12:06,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:12:06,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:12:06,403 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:12:06,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2020-10-20 03:12:06,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65a685236/38c0316f738644eeb27840a96fbf54e8/FLAG774c76956 [2020-10-20 03:12:07,104 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:12:07,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2020-10-20 03:12:07,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65a685236/38c0316f738644eeb27840a96fbf54e8/FLAG774c76956 [2020-10-20 03:12:07,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65a685236/38c0316f738644eeb27840a96fbf54e8 [2020-10-20 03:12:07,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:12:07,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:12:07,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:12:07,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:12:07,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:12:07,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:12:07" (1/1) ... [2020-10-20 03:12:07,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3559b8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:07, skipping insertion in model container [2020-10-20 03:12:07,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:12:07" (1/1) ... [2020-10-20 03:12:07,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:12:07,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:12:07,684 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-20 03:12:07,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:12:07,918 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:12:07,940 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-20 03:12:07,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:12:08,102 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:12:08,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08 WrapperNode [2020-10-20 03:12:08,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:12:08,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:12:08,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:12:08,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:12:08,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (1/1) ... [2020-10-20 03:12:08,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (1/1) ... [2020-10-20 03:12:08,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:12:08,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:12:08,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:12:08,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:12:08,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (1/1) ... [2020-10-20 03:12:08,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (1/1) ... [2020-10-20 03:12:08,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (1/1) ... [2020-10-20 03:12:08,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (1/1) ... [2020-10-20 03:12:08,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (1/1) ... [2020-10-20 03:12:08,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (1/1) ... [2020-10-20 03:12:08,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (1/1) ... [2020-10-20 03:12:08,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:12:08,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:12:08,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:12:08,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:12:08,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:12:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 03:12:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:12:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-20 03:12:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:12:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:12:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:12:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-20 03:12:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-20 03:12:08,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:12:08,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:12:08,265 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:12:08,650 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:12:08,650 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 03:12:08,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:12:08 BoogieIcfgContainer [2020-10-20 03:12:08,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:12:08,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:12:08,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:12:08,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:12:08,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:12:07" (1/3) ... [2020-10-20 03:12:08,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421d270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:12:08, skipping insertion in model container [2020-10-20 03:12:08,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:12:08" (2/3) ... [2020-10-20 03:12:08,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421d270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:12:08, skipping insertion in model container [2020-10-20 03:12:08,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:12:08" (3/3) ... [2020-10-20 03:12:08,661 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2020-10-20 03:12:08,674 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:12:08,674 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:12:08,682 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:12:08,683 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:12:08,709 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,710 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,710 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,710 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,711 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,711 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,711 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,711 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,712 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,712 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,712 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,712 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,713 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,713 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,717 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,717 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,717 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,717 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,718 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,718 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,718 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,718 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:12:08,735 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-20 03:12:08,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 03:12:08,767 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:12:08,768 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:12:08,768 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:12:08,768 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:12:08,768 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:12:08,768 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:12:08,768 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:12:08,769 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:12:08,780 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:12:08,783 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 69 transitions, 146 flow [2020-10-20 03:12:08,786 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 69 transitions, 146 flow [2020-10-20 03:12:08,788 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 69 transitions, 146 flow [2020-10-20 03:12:08,834 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-20 03:12:08,834 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-20 03:12:08,839 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 4/68 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-10-20 03:12:08,841 INFO L117 LiptonReduction]: Number of co-enabled transitions 340 [2020-10-20 03:12:10,337 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-20 03:12:10,861 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-10-20 03:12:11,561 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 154 [2020-10-20 03:12:11,825 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-20 03:12:11,828 INFO L132 LiptonReduction]: Checked pairs total: 360 [2020-10-20 03:12:11,828 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-20 03:12:11,834 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 28 flow [2020-10-20 03:12:11,842 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13 states. [2020-10-20 03:12:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-20 03:12:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-20 03:12:11,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:12:11,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-20 03:12:11,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:12:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:12:11,857 INFO L82 PathProgramCache]: Analyzing trace with hash 270839, now seen corresponding path program 1 times [2020-10-20 03:12:11,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:12:11,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106113469] [2020-10-20 03:12:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:12:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 03:12:12,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 03:12:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 03:12:12,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 03:12:12,114 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 03:12:12,115 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 03:12:12,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:12:12,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:12:12 BasicIcfg [2020-10-20 03:12:12,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:12:12,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:12:12,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:12:12,139 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:12:12,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:12:08" (3/4) ... [2020-10-20 03:12:12,142 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 03:12:12,185 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:12:12,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:12:12,187 INFO L168 Benchmark]: Toolchain (without parser) took 4798.42 ms. Allocated memory was 43.0 MB in the beginning and 68.7 MB in the end (delta: 25.7 MB). Free memory was 21.9 MB in the beginning and 17.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 30.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,188 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 32.0 MB. Free memory was 11.1 MB in the beginning and 11.1 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.03 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 21.0 MB in the beginning and 22.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,190 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.60 ms. Allocated memory is still 45.1 MB. Free memory was 22.3 MB in the beginning and 20.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,191 INFO L168 Benchmark]: Boogie Preprocessor took 29.15 ms. Allocated memory is still 45.1 MB. Free memory was 20.1 MB in the beginning and 18.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,192 INFO L168 Benchmark]: RCFGBuilder took 470.14 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 18.5 MB in the beginning and 15.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,193 INFO L168 Benchmark]: TraceAbstraction took 3484.41 ms. Allocated memory was 45.6 MB in the beginning and 68.7 MB in the end (delta: 23.1 MB). Free memory was 15.3 MB in the beginning and 19.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 19.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,194 INFO L168 Benchmark]: Witness Printer took 47.20 ms. Allocated memory is still 68.7 MB. Free memory was 19.1 MB in the beginning and 17.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:12:12,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 32.0 MB. Free memory was 11.1 MB in the beginning and 11.1 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 708.03 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 21.0 MB in the beginning and 22.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 48.60 ms. Allocated memory is still 45.1 MB. Free memory was 22.3 MB in the beginning and 20.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.15 ms. Allocated memory is still 45.1 MB. Free memory was 20.1 MB in the beginning and 18.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 470.14 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 18.5 MB in the beginning and 15.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3484.41 ms. Allocated memory was 45.6 MB in the beginning and 68.7 MB in the end (delta: 23.1 MB). Free memory was 15.3 MB in the beginning and 19.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 19.2 MB. Max. memory is 14.3 GB. * Witness Printer took 47.20 ms. Allocated memory is still 68.7 MB. Free memory was 19.1 MB in the beginning and 17.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 224 VarBasedMoverChecksPositive, 7 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 7 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 4 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 69 PlacesBefore, 13 PlacesAfterwards, 69 TransitionsBefore, 10 TransitionsAfterwards, 340 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 71 TotalNumberOfCompositions, 360 MoverChecksTotal - CounterExampleResult [Line: 696]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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 [cond={9:0}, lock={13:0}, x=0] [L704] 1 !(x == 42) ? reach_error() : (void)0 [L696] COND FALSE 1 !(0) [L696] 1 __assert_fail ("0", "svc.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [cond={9:0}, lock={13:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, 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...