./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 997cd7c3 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_1.5.800.v20200727-1323.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 0.2.1-dev-997cd7c-m [2021-09-22 14:57:03,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-09-22 14:57:03,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-09-22 14:57:03,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-09-22 14:57:03,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-09-22 14:57:03,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-09-22 14:57:03,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-09-22 14:57:03,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-09-22 14:57:03,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-09-22 14:57:03,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-09-22 14:57:03,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-09-22 14:57:03,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-09-22 14:57:03,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-09-22 14:57:03,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-09-22 14:57:03,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-09-22 14:57:03,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-09-22 14:57:03,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-09-22 14:57:03,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-09-22 14:57:03,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-09-22 14:57:03,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-09-22 14:57:03,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-09-22 14:57:03,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-09-22 14:57:03,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-09-22 14:57:03,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-09-22 14:57:03,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-09-22 14:57:03,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-09-22 14:57:03,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-09-22 14:57:03,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-09-22 14:57:03,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-09-22 14:57:03,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-09-22 14:57:03,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-09-22 14:57:03,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-09-22 14:57:03,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-09-22 14:57:03,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-09-22 14:57:03,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-09-22 14:57:03,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-09-22 14:57:03,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-09-22 14:57:03,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-09-22 14:57:03,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-09-22 14:57:03,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-09-22 14:57:03,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-09-22 14:57:03,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-09-22 14:57:03,255 INFO L113 SettingsManager]: Loading preferences was successful [2021-09-22 14:57:03,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-09-22 14:57:03,256 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-09-22 14:57:03,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-09-22 14:57:03,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-09-22 14:57:03,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-09-22 14:57:03,257 INFO L138 SettingsManager]: * Use SBE=true [2021-09-22 14:57:03,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-09-22 14:57:03,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-09-22 14:57:03,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-09-22 14:57:03,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-09-22 14:57:03,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-09-22 14:57:03,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-09-22 14:57:03,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-09-22 14:57:03,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-09-22 14:57:03,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-09-22 14:57:03,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-09-22 14:57:03,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-09-22 14:57:03,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-09-22 14:57:03,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-09-22 14:57:03,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-09-22 14:57:03,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-09-22 14:57:03,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:57:03,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-09-22 14:57:03,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-09-22 14:57:03,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-09-22 14:57:03,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-09-22 14:57:03,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-09-22 14:57:03,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-09-22 14:57:03,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-09-22 14:57:03,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 829a526a08c17a0464f47e0e793f1cfb84d5a37f [2021-09-22 14:57:03,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-09-22 14:57:03,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-09-22 14:57:03,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-09-22 14:57:03,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-09-22 14:57:03,509 INFO L275 PluginConnector]: CDTParser initialized [2021-09-22 14:57:03,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2021-09-22 14:57:03,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384c74a9c/a884979ff96244eb9fce799b81d60f6d/FLAGc2398cd67 [2021-09-22 14:57:03,898 INFO L306 CDTParser]: Found 1 translation units. [2021-09-22 14:57:03,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2021-09-22 14:57:03,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384c74a9c/a884979ff96244eb9fce799b81d60f6d/FLAGc2398cd67 [2021-09-22 14:57:03,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384c74a9c/a884979ff96244eb9fce799b81d60f6d [2021-09-22 14:57:03,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-09-22 14:57:03,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-09-22 14:57:03,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-09-22 14:57:03,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-09-22 14:57:03,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-09-22 14:57:03,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:57:03" (1/1) ... [2021-09-22 14:57:03,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607694d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:03, skipping insertion in model container [2021-09-22 14:57:03,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:57:03" (1/1) ... [2021-09-22 14:57:03,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-09-22 14:57:03,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-09-22 14:57:04,104 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-09-22 14:57:04,221 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i[30416,30429] [2021-09-22 14:57:04,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:57:04,239 INFO L203 MainTranslator]: Completed pre-run [2021-09-22 14:57:04,250 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-09-22 14:57:04,269 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i[30416,30429] [2021-09-22 14:57:04,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:57:04,314 INFO L208 MainTranslator]: Completed translation [2021-09-22 14:57:04,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04 WrapperNode [2021-09-22 14:57:04,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-09-22 14:57:04,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-09-22 14:57:04,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-09-22 14:57:04,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-09-22 14:57:04,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (1/1) ... [2021-09-22 14:57:04,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (1/1) ... [2021-09-22 14:57:04,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-09-22 14:57:04,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-09-22 14:57:04,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-09-22 14:57:04,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-09-22 14:57:04,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (1/1) ... [2021-09-22 14:57:04,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (1/1) ... [2021-09-22 14:57:04,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (1/1) ... [2021-09-22 14:57:04,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (1/1) ... [2021-09-22 14:57:04,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (1/1) ... [2021-09-22 14:57:04,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (1/1) ... [2021-09-22 14:57:04,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (1/1) ... [2021-09-22 14:57:04,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-09-22 14:57:04,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-09-22 14:57:04,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-09-22 14:57:04,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-09-22 14:57:04,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (1/1) ... [2021-09-22 14:57:04,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:57:04,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:57:04,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-09-22 14:57:04,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-09-22 14:57:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-09-22 14:57:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-09-22 14:57:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-09-22 14:57:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-09-22 14:57:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-09-22 14:57:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-09-22 14:57:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-09-22 14:57:04,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-09-22 14:57:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-09-22 14:57:04,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-09-22 14:57:04,427 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-09-22 14:57:04,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-09-22 14:57:04,672 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-09-22 14:57:04,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:57:04 BoogieIcfgContainer [2021-09-22 14:57:04,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-09-22 14:57:04,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-09-22 14:57:04,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-09-22 14:57:04,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-09-22 14:57:04,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.09 02:57:03" (1/3) ... [2021-09-22 14:57:04,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a641024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:57:04, skipping insertion in model container [2021-09-22 14:57:04,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:57:04" (2/3) ... [2021-09-22 14:57:04,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a641024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:57:04, skipping insertion in model container [2021-09-22 14:57:04,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:57:04" (3/3) ... [2021-09-22 14:57:04,678 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2021-09-22 14:57:04,681 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-09-22 14:57:04,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-09-22 14:57:04,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-09-22 14:57:04,682 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-09-22 14:57:04,700 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,700 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,700 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,700 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,701 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,701 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,701 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,701 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,701 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,701 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,702 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,702 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,702 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,702 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,702 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,702 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,703 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,703 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,703 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,703 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,705 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,706 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,706 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,706 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,706 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,706 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:57:04,713 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-09-22 14:57:04,745 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-09-22 14:57:04,750 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-09-22 14:57:04,750 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-09-22 14:57:04,760 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-09-22 14:57:04,766 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 68 transitions, 144 flow [2021-09-22 14:57:04,768 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 68 transitions, 144 flow [2021-09-22 14:57:04,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 144 flow [2021-09-22 14:57:04,801 INFO L129 PetriNetUnfolder]: 3/67 cut-off events. [2021-09-22 14:57:04,801 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-09-22 14:57:04,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 3/67 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 24. Up to 2 conditions per place. [2021-09-22 14:57:04,806 INFO L116 LiptonReduction]: Number of co-enabled transitions 286 [2021-09-22 14:57:07,703 INFO L131 LiptonReduction]: Checked pairs total: 262 [2021-09-22 14:57:07,704 INFO L133 LiptonReduction]: Total number of compositions: 63 [2021-09-22 14:57:07,728 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 28 flow [2021-09-22 14:57:07,734 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:57:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:57:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-09-22 14:57:07,739 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:57:07,740 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-09-22 14:57:07,750 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-09-22 14:57:07,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:57:07,754 INFO L82 PathProgramCache]: Analyzing trace with hash 253215, now seen corresponding path program 1 times [2021-09-22 14:57:07,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:57:07,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539398700] [2021-09-22 14:57:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:57:07,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:57:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-09-22 14:57:07,867 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-09-22 14:57:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-09-22 14:57:07,899 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-09-22 14:57:07,900 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-09-22 14:57:07,901 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:57:07,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-09-22 14:57:07,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:57:07,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-09-22 14:57:07,907 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-09-22 14:57:07,907 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-09-22 14:57:07,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.09 02:57:07 BasicIcfg [2021-09-22 14:57:07,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-09-22 14:57:07,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-09-22 14:57:07,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-09-22 14:57:07,919 INFO L275 PluginConnector]: Witness Printer initialized [2021-09-22 14:57:07,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:57:04" (3/4) ... [2021-09-22 14:57:07,921 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-09-22 14:57:07,942 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-09-22 14:57:07,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-09-22 14:57:07,943 INFO L168 Benchmark]: Toolchain (without parser) took 4015.98 ms. Allocated memory was 52.4 MB in the beginning and 98.6 MB in the end (delta: 46.1 MB). Free memory was 28.1 MB in the beginning and 52.2 MB in the end (delta: -24.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:57:07,944 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:57:07,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.70 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 27.9 MB in the beginning and 49.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2021-09-22 14:57:07,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.69 ms. Allocated memory is still 75.5 MB. Free memory was 49.5 MB in the beginning and 47.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:57:07,945 INFO L168 Benchmark]: Boogie Preprocessor took 16.58 ms. Allocated memory is still 75.5 MB. Free memory was 47.5 MB in the beginning and 46.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:57:07,945 INFO L168 Benchmark]: RCFGBuilder took 311.40 ms. Allocated memory is still 75.5 MB. Free memory was 46.2 MB in the beginning and 53.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-09-22 14:57:07,946 INFO L168 Benchmark]: TraceAbstraction took 3244.36 ms. Allocated memory was 75.5 MB in the beginning and 98.6 MB in the end (delta: 23.1 MB). Free memory was 52.7 MB in the beginning and 53.5 MB in the end (delta: -771.5 kB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-09-22 14:57:07,946 INFO L168 Benchmark]: Witness Printer took 22.70 ms. Allocated memory is still 98.6 MB. Free memory was 53.5 MB in the beginning and 52.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:57:07,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 387.70 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 27.9 MB in the beginning and 49.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.69 ms. Allocated memory is still 75.5 MB. Free memory was 49.5 MB in the beginning and 47.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.58 ms. Allocated memory is still 75.5 MB. Free memory was 47.5 MB in the beginning and 46.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 311.40 ms. Allocated memory is still 75.5 MB. Free memory was 46.2 MB in the beginning and 53.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3244.36 ms. Allocated memory was 75.5 MB in the beginning and 98.6 MB in the end (delta: 23.1 MB). Free memory was 52.7 MB in the beginning and 53.5 MB in the end (delta: -771.5 kB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * Witness Printer took 22.70 ms. Allocated memory is still 98.6 MB. Free memory was 53.5 MB in the beginning and 52.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2936.2ms, 69 PlacesBefore, 13 PlacesAfterwards, 68 TransitionsBefore, 10 TransitionsAfterwards, 286 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 262 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 254, positive: 246, positive conditional: 0, positive unconditional: 246, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 201, positive: 196, positive conditional: 0, positive unconditional: 196, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 201, positive: 196, positive conditional: 0, positive unconditional: 196, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 254, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 201, unknown conditional: 0, unknown unconditional: 201] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 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; [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] - UnprovableResult [Line: 712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3161.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 4.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2983.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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: 4.6ms SsaConstructionTime, 28.5ms SatisfiabilityAnalysisTime, 0.0ms 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! [2021-09-22 14:57:07,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...