./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 791161d1 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-?-791161d [2022-07-22 21:27:37,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:27:37,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:27:37,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:27:37,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:27:37,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:27:37,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:27:37,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:27:37,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:27:37,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:27:37,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:27:37,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:27:37,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:27:37,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:27:37,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:27:37,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:27:37,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:27:37,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:27:37,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:27:37,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:27:37,402 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:27:37,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:27:37,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:27:37,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:27:37,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:27:37,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:27:37,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:27:37,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:27:37,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:27:37,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:27:37,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:27:37,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:27:37,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:27:37,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:27:37,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:27:37,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:27:37,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:27:37,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:27:37,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:27:37,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:27:37,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:27:37,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:27:37,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:27:37,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:27:37,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:27:37,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:27:37,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:27:37,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:27:37,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:27:37,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:27:37,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:27:37,460 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:27:37,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:27:37,461 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:27:37,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:27:37,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:27:37,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:27:37,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:27:37,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:27:37,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:27:37,462 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:27:37,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:27:37,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:27:37,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:27:37,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:27:37,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:27:37,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:27:37,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:27:37,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:27:37,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:27:37,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:27:37,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:27:37,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:27:37,464 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:27:37,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:27:37,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:27:37,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2022-07-22 21:27:37,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:27:37,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:27:37,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:27:37,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:27:37,704 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:27:37,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-07-22 21:27:37,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e23f15c/852a3579771c474695f1a80a95d56d60/FLAGdf6ad0ee8 [2022-07-22 21:27:38,195 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:27:38,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-07-22 21:27:38,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e23f15c/852a3579771c474695f1a80a95d56d60/FLAGdf6ad0ee8 [2022-07-22 21:27:38,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e23f15c/852a3579771c474695f1a80a95d56d60 [2022-07-22 21:27:38,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:27:38,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:27:38,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:27:38,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:27:38,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:27:38,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:27:38" (1/1) ... [2022-07-22 21:27:38,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99d3162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:38, skipping insertion in model container [2022-07-22 21:27:38,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:27:38" (1/1) ... [2022-07-22 21:27:38,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:27:38,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:27:39,232 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] [2022-07-22 21:27:39,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:27:39,263 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:27:39,310 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] [2022-07-22 21:27:39,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:27:39,413 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:27:39,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39 WrapperNode [2022-07-22 21:27:39,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:27:39,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:27:39,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:27:39,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:27:39,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (1/1) ... [2022-07-22 21:27:39,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (1/1) ... [2022-07-22 21:27:39,461 INFO L137 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-07-22 21:27:39,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:27:39,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:27:39,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:27:39,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:27:39,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (1/1) ... [2022-07-22 21:27:39,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (1/1) ... [2022-07-22 21:27:39,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (1/1) ... [2022-07-22 21:27:39,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (1/1) ... [2022-07-22 21:27:39,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (1/1) ... [2022-07-22 21:27:39,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (1/1) ... [2022-07-22 21:27:39,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (1/1) ... [2022-07-22 21:27:39,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:27:39,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:27:39,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:27:39,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:27:39,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (1/1) ... [2022-07-22 21:27:39,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:27:39,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:27:39,518 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) [2022-07-22 21:27:39,519 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 [2022-07-22 21:27:39,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:27:39,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:27:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:27:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:27:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:27:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:27:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 21:27:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:27:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:27:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:27:39,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:27:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:27:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:27:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:27:39,551 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:27:39,748 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:27:39,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:27:39,879 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:27:39,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:27:39,901 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:27:39,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:27:39 BoogieIcfgContainer [2022-07-22 21:27:39,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:27:39,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:27:39,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:27:39,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:27:39,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:27:38" (1/3) ... [2022-07-22 21:27:39,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a54be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:27:39, skipping insertion in model container [2022-07-22 21:27:39,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:39" (2/3) ... [2022-07-22 21:27:39,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a54be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:27:39, skipping insertion in model container [2022-07-22 21:27:39,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:27:39" (3/3) ... [2022-07-22 21:27:39,926 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-07-22 21:27:39,930 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:27:39,952 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:27:39,953 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-22 21:27:39,953 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:27:39,996 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-22 21:27:40,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 220 flow [2022-07-22 21:27:40,062 INFO L129 PetriNetUnfolder]: 4/120 cut-off events. [2022-07-22 21:27:40,062 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:27:40,064 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. [2022-07-22 21:27:40,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 106 transitions, 220 flow [2022-07-22 21:27:40,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 87 transitions, 180 flow [2022-07-22 21:27:40,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:27:40,079 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@275239ba, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31a2a2db [2022-07-22 21:27:40,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-22 21:27:40,083 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2022-07-22 21:27:40,084 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:27:40,084 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:40,085 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] [2022-07-22 21:27:40,085 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)] === [2022-07-22 21:27:40,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:40,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1430332822, now seen corresponding path program 1 times [2022-07-22 21:27:40,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:40,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501084672] [2022-07-22 21:27:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:40,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:40,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:40,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501084672] [2022-07-22 21:27:40,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501084672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:40,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:40,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:27:40,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59653703] [2022-07-22 21:27:40,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:40,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:27:40,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:27:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:27:40,517 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 106 [2022-07-22 21:27:40,523 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) [2022-07-22 21:27:40,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:40,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 106 [2022-07-22 21:27:40,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:40,610 INFO L129 PetriNetUnfolder]: 3/95 cut-off events. [2022-07-22 21:27:40,611 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-07-22 21:27:40,612 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. [2022-07-22 21:27:40,613 INFO L132 encePairwiseOnDemand]: 94/106 looper letters, 14 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2022-07-22 21:27:40,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 228 flow [2022-07-22 21:27:40,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:27:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:27:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 551 transitions. [2022-07-22 21:27:40,632 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7425876010781671 [2022-07-22 21:27:40,633 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 551 transitions. [2022-07-22 21:27:40,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 551 transitions. [2022-07-22 21:27:40,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:40,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 551 transitions. [2022-07-22 21:27:40,644 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) [2022-07-22 21:27:40,653 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) [2022-07-22 21:27:40,653 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) [2022-07-22 21:27:40,655 INFO L186 Difference]: Start difference. First operand has 90 places, 87 transitions, 180 flow. Second operand 7 states and 551 transitions. [2022-07-22 21:27:40,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 228 flow [2022-07-22 21:27:40,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:27:40,663 INFO L242 Difference]: Finished difference. Result has 92 places, 85 transitions, 202 flow [2022-07-22 21:27:40,665 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} [2022-07-22 21:27:40,669 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2022-07-22 21:27:40,670 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 202 flow [2022-07-22 21:27:40,670 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) [2022-07-22 21:27:40,671 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:40,671 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] [2022-07-22 21:27:40,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:27:40,671 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)] === [2022-07-22 21:27:40,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:40,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2117080854, now seen corresponding path program 1 times [2022-07-22 21:27:40,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:40,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655281799] [2022-07-22 21:27:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:40,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:40,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:40,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655281799] [2022-07-22 21:27:40,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655281799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:40,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:40,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:27:40,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563598747] [2022-07-22 21:27:40,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:40,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:27:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:40,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:27:40,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:27:40,795 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 106 [2022-07-22 21:27:40,796 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) [2022-07-22 21:27:40,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:40,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 106 [2022-07-22 21:27:40,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:40,883 INFO L129 PetriNetUnfolder]: 3/100 cut-off events. [2022-07-22 21:27:40,884 INFO L130 PetriNetUnfolder]: For 13/15 co-relation queries the response was YES. [2022-07-22 21:27:40,884 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. [2022-07-22 21:27:40,885 INFO L132 encePairwiseOnDemand]: 96/106 looper letters, 16 selfloop transitions, 5 changer transitions 7/85 dead transitions. [2022-07-22 21:27:40,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 256 flow [2022-07-22 21:27:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:27:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:27:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2022-07-22 21:27:40,887 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7398921832884097 [2022-07-22 21:27:40,887 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2022-07-22 21:27:40,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2022-07-22 21:27:40,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:40,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2022-07-22 21:27:40,889 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) [2022-07-22 21:27:40,890 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) [2022-07-22 21:27:40,891 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) [2022-07-22 21:27:40,891 INFO L186 Difference]: Start difference. First operand has 92 places, 85 transitions, 202 flow. Second operand 7 states and 549 transitions. [2022-07-22 21:27:40,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 256 flow [2022-07-22 21:27:40,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 85 transitions, 238 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-22 21:27:40,894 INFO L242 Difference]: Finished difference. Result has 91 places, 76 transitions, 174 flow [2022-07-22 21:27:40,894 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} [2022-07-22 21:27:40,895 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 1 predicate places. [2022-07-22 21:27:40,895 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 174 flow [2022-07-22 21:27:40,895 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) [2022-07-22 21:27:40,896 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:40,896 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] [2022-07-22 21:27:40,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:27:40,896 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)] === [2022-07-22 21:27:40,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash 447259994, now seen corresponding path program 1 times [2022-07-22 21:27:40,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:40,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095400677] [2022-07-22 21:27:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:40,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:40,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:40,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095400677] [2022-07-22 21:27:40,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095400677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:40,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:40,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:27:40,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366246333] [2022-07-22 21:27:40,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:40,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:27:40,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:40,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:27:40,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:27:40,978 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-22 21:27:40,978 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) [2022-07-22 21:27:40,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:40,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-22 21:27:40,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:41,016 INFO L129 PetriNetUnfolder]: 2/100 cut-off events. [2022-07-22 21:27:41,016 INFO L130 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-07-22 21:27:41,018 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. [2022-07-22 21:27:41,018 INFO L132 encePairwiseOnDemand]: 101/106 looper letters, 11 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2022-07-22 21:27:41,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 215 flow [2022-07-22 21:27:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:27:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:27:41,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2022-07-22 21:27:41,020 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8710691823899371 [2022-07-22 21:27:41,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2022-07-22 21:27:41,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2022-07-22 21:27:41,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:41,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2022-07-22 21:27:41,022 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) [2022-07-22 21:27:41,023 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) [2022-07-22 21:27:41,023 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) [2022-07-22 21:27:41,023 INFO L186 Difference]: Start difference. First operand has 91 places, 76 transitions, 174 flow. Second operand 3 states and 277 transitions. [2022-07-22 21:27:41,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 215 flow [2022-07-22 21:27:41,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 203 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:27:41,027 INFO L242 Difference]: Finished difference. Result has 82 places, 78 transitions, 194 flow [2022-07-22 21:27:41,027 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} [2022-07-22 21:27:41,029 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -8 predicate places. [2022-07-22 21:27:41,029 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 194 flow [2022-07-22 21:27:41,029 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) [2022-07-22 21:27:41,029 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:41,029 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] [2022-07-22 21:27:41,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:27:41,030 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)] === [2022-07-22 21:27:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:41,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1514938920, now seen corresponding path program 1 times [2022-07-22 21:27:41,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:41,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066637002] [2022-07-22 21:27:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:41,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:41,059 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:27:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:41,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:27:41,105 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:27:41,106 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-22 21:27:41,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-22 21:27:41,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-22 21:27:41,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-22 21:27:41,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-22 21:27:41,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:27:41,112 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-22 21:27:41,117 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:27:41,117 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:27:41,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:27:41 BasicIcfg [2022-07-22 21:27:41,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:27:41,159 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:27:41,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:27:41,160 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:27:41,160 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:27:39" (3/4) ... [2022-07-22 21:27:41,161 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 21:27:41,186 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:27:41,186 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:27:41,187 INFO L158 Benchmark]: Toolchain (without parser) took 2453.11ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 67.6MB in the beginning and 36.2MB in the end (delta: 31.4MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2022-07-22 21:27:41,187 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory was 57.3MB in the beginning and 57.3MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:27:41,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.68ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 67.4MB in the beginning and 80.4MB in the end (delta: -13.0MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2022-07-22 21:27:41,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.23ms. Allocated memory is still 125.8MB. Free memory was 80.4MB in the beginning and 77.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:27:41,188 INFO L158 Benchmark]: Boogie Preprocessor took 25.30ms. Allocated memory is still 125.8MB. Free memory was 77.6MB in the beginning and 74.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:27:41,188 INFO L158 Benchmark]: RCFGBuilder took 414.84ms. Allocated memory is still 125.8MB. Free memory was 74.8MB in the beginning and 57.3MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-22 21:27:41,189 INFO L158 Benchmark]: TraceAbstraction took 1254.70ms. Allocated memory is still 125.8MB. Free memory was 56.6MB in the beginning and 39.3MB in the end (delta: 17.3MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-07-22 21:27:41,189 INFO L158 Benchmark]: Witness Printer took 27.30ms. Allocated memory is still 125.8MB. Free memory was 39.3MB in the beginning and 36.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:27:41,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory was 57.3MB in the beginning and 57.3MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 677.68ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 67.4MB in the beginning and 80.4MB in the end (delta: -13.0MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.23ms. Allocated memory is still 125.8MB. Free memory was 80.4MB in the beginning and 77.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.30ms. Allocated memory is still 125.8MB. Free memory was 77.6MB in the beginning and 74.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 414.84ms. Allocated memory is still 125.8MB. Free memory was 74.8MB in the beginning and 57.3MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1254.70ms. Allocated memory is still 125.8MB. Free memory was 56.6MB in the beginning and 39.3MB in the end (delta: 17.3MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Witness Printer took 27.30ms. Allocated memory is still 125.8MB. Free memory was 39.3MB in the beginning and 36.2MB in the end (delta: 3.1MB). 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: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.1s 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, 0.1s 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, 0.4s 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! [2022-07-22 21:27:41,228 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... --- 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