./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-1_2-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/ldv-races/race-1_2-join.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 fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:10:51,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:10:51,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:10:51,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:10:51,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:10:51,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:10:51,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:10:51,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:10:51,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:10:51,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:10:51,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:10:51,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:10:51,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:10:51,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:10:51,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:10:51,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:10:51,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:10:51,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:10:51,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:10:51,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:10:51,357 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:10:51,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:10:51,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:10:51,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:10:51,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:10:51,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:10:51,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:10:51,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:10:51,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:10:51,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:10:51,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:10:51,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:10:51,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:10:51,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:10:51,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:10:51,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:10:51,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:10:51,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:10:51,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:10:51,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:10:51,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:10:51,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:10:51,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:10:51,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:10:51,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:10:51,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:10:51,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:10:51,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:10:51,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:10:51,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:10:51,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:10:51,399 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:10:51,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:10:51,400 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:10:51,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:10:51,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:10:51,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:10:51,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:10:51,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:10:51,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:10:51,400 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:10:51,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:10:51,401 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:10:51,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:10:51,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:10:51,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:10:51,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:10:51,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:10:51,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:10:51,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:10:51,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:10:51,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:10:51,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:10:51,403 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:10:51,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:10:51,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:10:51,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2022-07-12 10:10:51,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:10:51,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:10:51,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:10:51,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:10:51,610 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:10:51,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-07-12 10:10:51,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3464b6657/b8ca736408be432cb0c793bdf3011d75/FLAG77b0371c1 [2022-07-12 10:10:52,155 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:10:52,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-07-12 10:10:52,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3464b6657/b8ca736408be432cb0c793bdf3011d75/FLAG77b0371c1 [2022-07-12 10:10:52,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3464b6657/b8ca736408be432cb0c793bdf3011d75 [2022-07-12 10:10:52,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:10:52,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:10:52,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:10:52,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:10:52,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:10:52,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:10:52" (1/1) ... [2022-07-12 10:10:52,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f24624d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:52, skipping insertion in model container [2022-07-12 10:10:52,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:10:52" (1/1) ... [2022-07-12 10:10:52,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:10:52,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:10:53,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-07-12 10:10:53,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:10:53,109 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:10:53,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-07-12 10:10:53,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:10:53,232 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:10:53,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53 WrapperNode [2022-07-12 10:10:53,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:10:53,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:10:53,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:10:53,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:10:53,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (1/1) ... [2022-07-12 10:10:53,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (1/1) ... [2022-07-12 10:10:53,283 INFO L137 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-07-12 10:10:53,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:10:53,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:10:53,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:10:53,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:10:53,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (1/1) ... [2022-07-12 10:10:53,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (1/1) ... [2022-07-12 10:10:53,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (1/1) ... [2022-07-12 10:10:53,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (1/1) ... [2022-07-12 10:10:53,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (1/1) ... [2022-07-12 10:10:53,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (1/1) ... [2022-07-12 10:10:53,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (1/1) ... [2022-07-12 10:10:53,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:10:53,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:10:53,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:10:53,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:10:53,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (1/1) ... [2022-07-12 10:10:53,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:10:53,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:10:53,333 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) [2022-07-12 10:10:53,335 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 [2022-07-12 10:10:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:10:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:10:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:10:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:10:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:10:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:10:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:10:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:10:53,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:10:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:10:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:10:53,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:10:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:10:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:10:53,360 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:10:53,651 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:10:53,652 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:10:53,814 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:10:53,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:10:53,831 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:10:53,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:10:53 BoogieIcfgContainer [2022-07-12 10:10:53,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:10:53,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:10:53,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:10:53,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:10:53,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:10:52" (1/3) ... [2022-07-12 10:10:53,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0e0411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:10:53, skipping insertion in model container [2022-07-12 10:10:53,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:53" (2/3) ... [2022-07-12 10:10:53,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0e0411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:10:53, skipping insertion in model container [2022-07-12 10:10:53,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:10:53" (3/3) ... [2022-07-12 10:10:53,838 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-07-12 10:10:53,842 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:10:53,848 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:10:53,848 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-12 10:10:53,848 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:10:53,872 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-12 10:10:53,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 220 flow [2022-07-12 10:10:53,923 INFO L129 PetriNetUnfolder]: 4/120 cut-off events. [2022-07-12 10:10:53,924 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:10:53,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 120 events. 4/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 165 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2022-07-12 10:10:53,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 106 transitions, 220 flow [2022-07-12 10:10:53,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 87 transitions, 180 flow [2022-07-12 10:10:53,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:10:53,940 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a27daf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51ed9875 [2022-07-12 10:10:53,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:10:53,946 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2022-07-12 10:10:53,946 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:10:53,946 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:53,947 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:53,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 10:10:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1430332822, now seen corresponding path program 1 times [2022-07-12 10:10:53,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:53,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977399656] [2022-07-12 10:10:53,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:53,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:54,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:54,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977399656] [2022-07-12 10:10:54,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977399656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:54,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:54,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:10:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922854212] [2022-07-12 10:10:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:54,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:10:54,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:54,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:10:54,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:10:54,238 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 106 [2022-07-12 10:10:54,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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) [2022-07-12 10:10:54,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:54,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 106 [2022-07-12 10:10:54,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:54,314 INFO L129 PetriNetUnfolder]: 3/95 cut-off events. [2022-07-12 10:10:54,315 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-07-12 10:10:54,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 95 events. 3/95 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 1 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 44. Up to 11 conditions per place. [2022-07-12 10:10:54,317 INFO L132 encePairwiseOnDemand]: 94/106 looper letters, 14 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2022-07-12 10:10:54,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 228 flow [2022-07-12 10:10:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:10:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:10:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 551 transitions. [2022-07-12 10:10:54,328 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7425876010781671 [2022-07-12 10:10:54,329 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 551 transitions. [2022-07-12 10:10:54,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 551 transitions. [2022-07-12 10:10:54,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:54,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 551 transitions. [2022-07-12 10:10:54,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 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) [2022-07-12 10:10:54,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2022-07-12 10:10:54,341 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2022-07-12 10:10:54,342 INFO L186 Difference]: Start difference. First operand has 90 places, 87 transitions, 180 flow. Second operand 7 states and 551 transitions. [2022-07-12 10:10:54,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 228 flow [2022-07-12 10:10:54,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:10:54,347 INFO L242 Difference]: Finished difference. Result has 92 places, 85 transitions, 202 flow [2022-07-12 10:10:54,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=202, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2022-07-12 10:10:54,351 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2022-07-12 10:10:54,351 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 202 flow [2022-07-12 10:10:54,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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) [2022-07-12 10:10:54,352 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:54,352 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:54,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:10:54,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 10:10:54,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2117080854, now seen corresponding path program 1 times [2022-07-12 10:10:54,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:54,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602055841] [2022-07-12 10:10:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:54,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:54,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602055841] [2022-07-12 10:10:54,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602055841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:54,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:54,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:10:54,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796849613] [2022-07-12 10:10:54,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:54,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:10:54,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:54,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:10:54,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:10:54,428 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 106 [2022-07-12 10:10:54,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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) [2022-07-12 10:10:54,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:54,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 106 [2022-07-12 10:10:54,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:54,479 INFO L129 PetriNetUnfolder]: 3/100 cut-off events. [2022-07-12 10:10:54,480 INFO L130 PetriNetUnfolder]: For 13/15 co-relation queries the response was YES. [2022-07-12 10:10:54,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 100 events. 3/100 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 44. Up to 12 conditions per place. [2022-07-12 10:10:54,482 INFO L132 encePairwiseOnDemand]: 96/106 looper letters, 16 selfloop transitions, 5 changer transitions 7/85 dead transitions. [2022-07-12 10:10:54,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 256 flow [2022-07-12 10:10:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:10:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:10:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2022-07-12 10:10:54,485 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7398921832884097 [2022-07-12 10:10:54,485 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2022-07-12 10:10:54,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2022-07-12 10:10:54,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:54,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2022-07-12 10:10:54,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 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) [2022-07-12 10:10:54,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2022-07-12 10:10:54,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2022-07-12 10:10:54,490 INFO L186 Difference]: Start difference. First operand has 92 places, 85 transitions, 202 flow. Second operand 7 states and 549 transitions. [2022-07-12 10:10:54,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 256 flow [2022-07-12 10:10:54,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 85 transitions, 238 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:10:54,493 INFO L242 Difference]: Finished difference. Result has 91 places, 76 transitions, 174 flow [2022-07-12 10:10:54,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=91, PETRI_TRANSITIONS=76} [2022-07-12 10:10:54,495 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 1 predicate places. [2022-07-12 10:10:54,496 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 174 flow [2022-07-12 10:10:54,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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) [2022-07-12 10:10:54,496 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:54,497 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:54,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:10:54,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 10:10:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash 447259994, now seen corresponding path program 1 times [2022-07-12 10:10:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:54,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470445865] [2022-07-12 10:10:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:54,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:54,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:54,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470445865] [2022-07-12 10:10:54,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470445865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:54,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:54,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:10:54,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314880980] [2022-07-12 10:10:54,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:54,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:10:54,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:54,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:10:54,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:10:54,574 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-12 10:10:54,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 76 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2022-07-12 10:10:54,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:54,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-12 10:10:54,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:54,607 INFO L129 PetriNetUnfolder]: 2/100 cut-off events. [2022-07-12 10:10:54,607 INFO L130 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-07-12 10:10:54,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 100 events. 2/100 cut-off events. For 8/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 112 event pairs, 0 based on Foata normal form. 3/102 useless extension candidates. Maximal degree in co-relation 26. Up to 13 conditions per place. [2022-07-12 10:10:54,608 INFO L132 encePairwiseOnDemand]: 101/106 looper letters, 11 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2022-07-12 10:10:54,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 215 flow [2022-07-12 10:10:54,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:10:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:10:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2022-07-12 10:10:54,610 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8710691823899371 [2022-07-12 10:10:54,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2022-07-12 10:10:54,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2022-07-12 10:10:54,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:54,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2022-07-12 10:10:54,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2022-07-12 10:10:54,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-07-12 10:10:54,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-07-12 10:10:54,613 INFO L186 Difference]: Start difference. First operand has 91 places, 76 transitions, 174 flow. Second operand 3 states and 277 transitions. [2022-07-12 10:10:54,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 215 flow [2022-07-12 10:10:54,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 203 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:10:54,617 INFO L242 Difference]: Finished difference. Result has 82 places, 78 transitions, 194 flow [2022-07-12 10:10:54,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2022-07-12 10:10:54,618 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -8 predicate places. [2022-07-12 10:10:54,619 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 194 flow [2022-07-12 10:10:54,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2022-07-12 10:10:54,619 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:54,619 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:54,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:10:54,620 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 10:10:54,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:54,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1514938920, now seen corresponding path program 1 times [2022-07-12 10:10:54,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:54,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298783542] [2022-07-12 10:10:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:54,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:10:54,661 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:10:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:10:54,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:10:54,709 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:10:54,710 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-12 10:10:54,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-12 10:10:54,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-12 10:10:54,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-12 10:10:54,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-12 10:10:54,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:10:54,715 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-12 10:10:54,722 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:10:54,722 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:10:54,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:10:54 BasicIcfg [2022-07-12 10:10:54,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:10:54,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:10:54,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:10:54,767 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:10:54,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:10:53" (3/4) ... [2022-07-12 10:10:54,768 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 10:10:54,808 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:10:54,808 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:10:54,809 INFO L158 Benchmark]: Toolchain (without parser) took 2169.64ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 91.9MB in the beginning and 129.8MB in the end (delta: -37.9MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2022-07-12 10:10:54,810 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 132.1MB. Free memory was 104.8MB in the beginning and 104.8MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:10:54,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 591.51ms. Allocated memory is still 132.1MB. Free memory was 91.9MB in the beginning and 61.4MB in the end (delta: 30.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-07-12 10:10:54,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.88ms. Allocated memory is still 132.1MB. Free memory was 61.4MB in the beginning and 58.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:10:54,810 INFO L158 Benchmark]: Boogie Preprocessor took 23.64ms. Allocated memory is still 132.1MB. Free memory was 58.5MB in the beginning and 55.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:10:54,812 INFO L158 Benchmark]: RCFGBuilder took 524.39ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 55.1MB in the beginning and 162.7MB in the end (delta: -107.5MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2022-07-12 10:10:54,812 INFO L158 Benchmark]: TraceAbstraction took 931.56ms. Allocated memory is still 195.0MB. Free memory was 161.6MB in the beginning and 134.0MB in the end (delta: 27.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2022-07-12 10:10:54,813 INFO L158 Benchmark]: Witness Printer took 42.39ms. Allocated memory is still 195.0MB. Free memory was 134.0MB in the beginning and 129.8MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:10:54,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 132.1MB. Free memory was 104.8MB in the beginning and 104.8MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 591.51ms. Allocated memory is still 132.1MB. Free memory was 91.9MB in the beginning and 61.4MB in the end (delta: 30.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.88ms. Allocated memory is still 132.1MB. Free memory was 61.4MB in the beginning and 58.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.64ms. Allocated memory is still 132.1MB. Free memory was 58.5MB in the beginning and 55.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 524.39ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 55.1MB in the beginning and 162.7MB in the end (delta: -107.5MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 931.56ms. Allocated memory is still 195.0MB. Free memory was 161.6MB in the beginning and 134.0MB in the end (delta: 27.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Witness Printer took 42.39ms. Allocated memory is still 195.0MB. Free memory was 134.0MB in the beginning and 129.8MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; VAL [t1={3:0}] [L1697] 0 pthread_mutex_t mutex; VAL [mutex={4:0}, t1={3:0}] [L1698] 0 int pdev; VAL [mutex={4:0}, pdev=0, t1={3:0}] [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 VAL [mutex={4:0}, pdev=1, t1={3:0}] [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, mutex={4:0}, pdev=1, t1={3:0}] [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, mutex={4:0}, pdev=1, t1={3:0}] [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={3:0}] [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: 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, 111 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 40 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=1, InterpolantAutomatonStates: 17, 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2022-07-12 10:10:54,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE