./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/goblint-regression/28-race_reach_82-list_racefree.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 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:20:24,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:20:24,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:20:24,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:20:24,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:20:24,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:20:24,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:20:24,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:20:24,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:20:24,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:20:24,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:20:24,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:20:24,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:20:24,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:20:24,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:20:24,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:20:24,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:20:24,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:20:24,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:20:24,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:20:24,526 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:20:24,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:20:24,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:20:24,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:20:24,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:20:24,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:20:24,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:20:24,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:20:24,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:20:24,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:20:24,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:20:24,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:20:24,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:20:24,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:20:24,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:20:24,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:20:24,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:20:24,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:20:24,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:20:24,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:20:24,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:20:24,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:20:24,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:20:24,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:20:24,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:20:24,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:20:24,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:20:24,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:20:24,559 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:20:24,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:20:24,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:20:24,560 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:20:24,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:20:24,561 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:20:24,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:20:24,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:20:24,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:20:24,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:20:24,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:20:24,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:20:24,562 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:20:24,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:20:24,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:20:24,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:20:24,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:20:24,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:20:24,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:20:24,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:20:24,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:20:24,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:20:24,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:20:24,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:20:24,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:20:24,566 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:20:24,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:20:24,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:20:24,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2022-07-19 21:20:24,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:20:24,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:20:24,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:20:24,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:20:24,785 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:20:24,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-07-19 21:20:24,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26182b5e/4ff7af0f2d6a4a2fb301561c70355079/FLAG9e1587367 [2022-07-19 21:20:25,215 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:20:25,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-07-19 21:20:25,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26182b5e/4ff7af0f2d6a4a2fb301561c70355079/FLAG9e1587367 [2022-07-19 21:20:25,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f26182b5e/4ff7af0f2d6a4a2fb301561c70355079 [2022-07-19 21:20:25,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:20:25,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:20:25,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:20:25,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:20:25,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:20:25,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:20:25" (1/1) ... [2022-07-19 21:20:25,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249f8117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:25, skipping insertion in model container [2022-07-19 21:20:25,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:20:25" (1/1) ... [2022-07-19 21:20:25,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:20:25,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:20:25,978 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/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-07-19 21:20:26,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:20:26,019 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:20:26,041 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/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-07-19 21:20:26,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:20:26,110 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:20:26,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26 WrapperNode [2022-07-19 21:20:26,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:20:26,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:20:26,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:20:26,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:20:26,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (1/1) ... [2022-07-19 21:20:26,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (1/1) ... [2022-07-19 21:20:26,176 INFO L137 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 206 [2022-07-19 21:20:26,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:20:26,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:20:26,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:20:26,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:20:26,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (1/1) ... [2022-07-19 21:20:26,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (1/1) ... [2022-07-19 21:20:26,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (1/1) ... [2022-07-19 21:20:26,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (1/1) ... [2022-07-19 21:20:26,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (1/1) ... [2022-07-19 21:20:26,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (1/1) ... [2022-07-19 21:20:26,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (1/1) ... [2022-07-19 21:20:26,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:20:26,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:20:26,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:20:26,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:20:26,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (1/1) ... [2022-07-19 21:20:26,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:20:26,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:20:26,232 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) [2022-07-19 21:20:26,237 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 [2022-07-19 21:20:26,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:20:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:20:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-07-19 21:20:26,258 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-07-19 21:20:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:20:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:20:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-07-19 21:20:26,258 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-07-19 21:20:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:20:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:20:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:20:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:20:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:20:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:20:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:20:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:20:26,260 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:20:26,353 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:20:26,354 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:20:26,659 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:20:26,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:20:26,667 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-19 21:20:26,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:20:26 BoogieIcfgContainer [2022-07-19 21:20:26,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:20:26,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:20:26,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:20:26,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:20:26,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:20:25" (1/3) ... [2022-07-19 21:20:26,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52af74a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:20:26, skipping insertion in model container [2022-07-19 21:20:26,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:26" (2/3) ... [2022-07-19 21:20:26,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52af74a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:20:26, skipping insertion in model container [2022-07-19 21:20:26,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:20:26" (3/3) ... [2022-07-19 21:20:26,675 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2022-07-19 21:20:26,679 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:20:26,685 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:20:26,685 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:20:26,685 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:20:26,785 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-19 21:20:26,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 203 places, 221 transitions, 464 flow [2022-07-19 21:20:26,942 INFO L129 PetriNetUnfolder]: 52/418 cut-off events. [2022-07-19 21:20:26,943 INFO L130 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-07-19 21:20:26,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 418 events. 52/418 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1633 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 214. Up to 8 conditions per place. [2022-07-19 21:20:26,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 221 transitions, 464 flow [2022-07-19 21:20:26,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 219 transitions, 454 flow [2022-07-19 21:20:26,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:20:26,977 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@18005f33, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@758c1126 [2022-07-19 21:20:26,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:20:26,989 INFO L129 PetriNetUnfolder]: 8/121 cut-off events. [2022-07-19 21:20:26,990 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:20:26,990 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:26,991 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-07-19 21:20:26,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:20:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:26,995 INFO L85 PathProgramCache]: Analyzing trace with hash 477644452, now seen corresponding path program 1 times [2022-07-19 21:20:27,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:27,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429981032] [2022-07-19 21:20:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:27,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:27,165 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:20:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:27,255 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:20:27,256 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:20:27,257 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-19 21:20:27,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-19 21:20:27,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-19 21:20:27,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-19 21:20:27,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:20:27,259 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:20:27,264 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:20:27,264 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-19 21:20:27,329 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-07-19 21:20:27,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 311 places, 344 transitions, 736 flow [2022-07-19 21:20:27,538 INFO L129 PetriNetUnfolder]: 191/1235 cut-off events. [2022-07-19 21:20:27,538 INFO L130 PetriNetUnfolder]: For 72/118 co-relation queries the response was YES. [2022-07-19 21:20:27,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 1235 events. 191/1235 cut-off events. For 72/118 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7681 event pairs, 2 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 779. Up to 32 conditions per place. [2022-07-19 21:20:27,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 344 transitions, 736 flow [2022-07-19 21:20:27,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 344 transitions, 736 flow [2022-07-19 21:20:27,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:20:27,568 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@18005f33, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@758c1126 [2022-07-19 21:20:27,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:20:27,592 INFO L129 PetriNetUnfolder]: 17/255 cut-off events. [2022-07-19 21:20:27,592 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:20:27,592 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:27,593 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-07-19 21:20:27,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:20:27,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:27,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1694256810, now seen corresponding path program 1 times [2022-07-19 21:20:27,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:27,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530555247] [2022-07-19 21:20:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:27,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:27,675 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:20:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:27,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:20:27,715 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:20:27,715 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-19 21:20:27,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-19 21:20:27,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-19 21:20:27,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-19 21:20:27,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-19 21:20:27,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:20:27,717 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:20:27,718 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:20:27,721 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-19 21:20:27,781 INFO L135 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-07-19 21:20:27,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 419 places, 467 transitions, 1012 flow [2022-07-19 21:20:28,634 INFO L129 PetriNetUnfolder]: 664/3422 cut-off events. [2022-07-19 21:20:28,634 INFO L130 PetriNetUnfolder]: For 419/519 co-relation queries the response was YES. [2022-07-19 21:20:28,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3873 conditions, 3422 events. 664/3422 cut-off events. For 419/519 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 26544 event pairs, 52 based on Foata normal form. 0/2908 useless extension candidates. Maximal degree in co-relation 2240. Up to 192 conditions per place. [2022-07-19 21:20:28,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 419 places, 467 transitions, 1012 flow [2022-07-19 21:20:28,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 467 transitions, 1012 flow [2022-07-19 21:20:28,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:20:28,832 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@18005f33, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@758c1126 [2022-07-19 21:20:28,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-19 21:20:28,920 INFO L129 PetriNetUnfolder]: 42/497 cut-off events. [2022-07-19 21:20:28,920 INFO L130 PetriNetUnfolder]: For 22/42 co-relation queries the response was YES. [2022-07-19 21:20:28,921 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:28,921 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1] [2022-07-19 21:20:28,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:20:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:28,922 INFO L85 PathProgramCache]: Analyzing trace with hash -613406248, now seen corresponding path program 1 times [2022-07-19 21:20:28,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:28,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129931199] [2022-07-19 21:20:28,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:28,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:28,976 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:20:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:29,014 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:20:29,016 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:20:29,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-19 21:20:29,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-19 21:20:29,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-19 21:20:29,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-19 21:20:29,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-19 21:20:29,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-19 21:20:29,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:20:29,019 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:20:29,020 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:20:29,020 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-19 21:20:29,092 INFO L135 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-07-19 21:20:29,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 527 places, 590 transitions, 1292 flow [2022-07-19 21:20:32,251 INFO L129 PetriNetUnfolder]: 2659/10759 cut-off events. [2022-07-19 21:20:32,251 INFO L130 PetriNetUnfolder]: For 2144/2314 co-relation queries the response was YES. [2022-07-19 21:20:32,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12924 conditions, 10759 events. 2659/10759 cut-off events. For 2144/2314 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 99309 event pairs, 626 based on Foata normal form. 0/9311 useless extension candidates. Maximal degree in co-relation 6922. Up to 1024 conditions per place. [2022-07-19 21:20:32,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 527 places, 590 transitions, 1292 flow [2022-07-19 21:20:32,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 527 places, 590 transitions, 1292 flow [2022-07-19 21:20:32,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:20:32,912 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@18005f33, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@758c1126 [2022-07-19 21:20:32,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:20:32,964 INFO L129 PetriNetUnfolder]: 52/579 cut-off events. [2022-07-19 21:20:32,964 INFO L130 PetriNetUnfolder]: For 39/59 co-relation queries the response was YES. [2022-07-19 21:20:32,964 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:32,965 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, 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] [2022-07-19 21:20:32,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:20:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1457546342, now seen corresponding path program 1 times [2022-07-19 21:20:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:32,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046533910] [2022-07-19 21:20:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:32,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:20:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:20:33,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:20:33,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046533910] [2022-07-19 21:20:33,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046533910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:20:33,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:20:33,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:20:33,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742413959] [2022-07-19 21:20:33,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:20:33,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:20:33,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:20:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:20:33,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:20:33,116 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 590 [2022-07-19 21:20:33,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 590 transitions, 1292 flow. Second operand has 3 states, 3 states have (on average 504.6666666666667) internal successors, (1514), 3 states have internal predecessors, (1514), 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) [2022-07-19 21:20:33,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:20:33,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 590 [2022-07-19 21:20:33,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:20:36,595 INFO L129 PetriNetUnfolder]: 1860/9591 cut-off events. [2022-07-19 21:20:36,595 INFO L130 PetriNetUnfolder]: For 6428/8140 co-relation queries the response was YES. [2022-07-19 21:20:36,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13831 conditions, 9591 events. 1860/9591 cut-off events. For 6428/8140 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 92693 event pairs, 324 based on Foata normal form. 12638/21539 useless extension candidates. Maximal degree in co-relation 7336. Up to 2088 conditions per place. [2022-07-19 21:20:37,117 INFO L132 encePairwiseOnDemand]: 535/590 looper letters, 33 selfloop transitions, 2 changer transitions 0/538 dead transitions. [2022-07-19 21:20:37,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 538 transitions, 1258 flow [2022-07-19 21:20:37,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:20:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:20:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1598 transitions. [2022-07-19 21:20:37,135 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9028248587570622 [2022-07-19 21:20:37,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1598 transitions. [2022-07-19 21:20:37,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1598 transitions. [2022-07-19 21:20:37,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:20:37,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1598 transitions. [2022-07-19 21:20:37,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 532.6666666666666) internal successors, (1598), 3 states have internal predecessors, (1598), 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) [2022-07-19 21:20:37,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 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) [2022-07-19 21:20:37,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 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) [2022-07-19 21:20:37,159 INFO L186 Difference]: Start difference. First operand has 527 places, 590 transitions, 1292 flow. Second operand 3 states and 1598 transitions. [2022-07-19 21:20:37,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 538 transitions, 1258 flow [2022-07-19 21:20:37,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 538 transitions, 1258 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:20:37,175 INFO L242 Difference]: Finished difference. Result has 526 places, 535 transitions, 1192 flow [2022-07-19 21:20:37,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1192, PETRI_PLACES=526, PETRI_TRANSITIONS=535} [2022-07-19 21:20:37,187 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, -1 predicate places. [2022-07-19 21:20:37,187 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 535 transitions, 1192 flow [2022-07-19 21:20:37,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 504.6666666666667) internal successors, (1514), 3 states have internal predecessors, (1514), 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) [2022-07-19 21:20:37,188 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:37,189 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1] [2022-07-19 21:20:37,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:20:37,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:20:37,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:37,190 INFO L85 PathProgramCache]: Analyzing trace with hash 602772942, now seen corresponding path program 1 times [2022-07-19 21:20:37,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:37,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262102479] [2022-07-19 21:20:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:37,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:37,222 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:20:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:37,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:20:37,266 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:20:37,266 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-19 21:20:37,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-19 21:20:37,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-07-19 21:20:37,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-19 21:20:37,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-19 21:20:37,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-19 21:20:37,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-19 21:20:37,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:20:37,268 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 21:20:37,268 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:20:37,268 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-19 21:20:37,336 INFO L135 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-07-19 21:20:37,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 635 places, 713 transitions, 1576 flow [2022-07-19 21:20:52,116 INFO L129 PetriNetUnfolder]: 11792/39230 cut-off events. [2022-07-19 21:20:52,116 INFO L130 PetriNetUnfolder]: For 10450/10706 co-relation queries the response was YES. [2022-07-19 21:20:54,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49656 conditions, 39230 events. 11792/39230 cut-off events. For 10450/10706 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 427374 event pairs, 4296 based on Foata normal form. 0/34504 useless extension candidates. Maximal degree in co-relation 24980. Up to 5120 conditions per place. [2022-07-19 21:20:54,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 635 places, 713 transitions, 1576 flow [2022-07-19 21:20:55,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 635 places, 713 transitions, 1576 flow [2022-07-19 21:20:55,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:20:55,051 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@18005f33, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@758c1126 [2022-07-19 21:20:55,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-19 21:20:55,098 INFO L129 PetriNetUnfolder]: 51/586 cut-off events. [2022-07-19 21:20:55,098 INFO L130 PetriNetUnfolder]: For 39/59 co-relation queries the response was YES. [2022-07-19 21:20:55,099 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:55,099 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, 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] [2022-07-19 21:20:55,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-07-19 21:20:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:55,099 INFO L85 PathProgramCache]: Analyzing trace with hash 914511963, now seen corresponding path program 1 times [2022-07-19 21:20:55,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:55,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755697647] [2022-07-19 21:20:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:55,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:20:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:20:55,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:20:55,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755697647] [2022-07-19 21:20:55,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755697647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:20:55,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:20:55,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:20:55,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711541533] [2022-07-19 21:20:55,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:20:55,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:20:55,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:20:55,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:20:55,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:20:55,134 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 713 [2022-07-19 21:20:55,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 713 transitions, 1576 flow. Second operand has 3 states, 3 states have (on average 608.6666666666666) internal successors, (1826), 3 states have internal predecessors, (1826), 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) [2022-07-19 21:20:55,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:20:55,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 713 [2022-07-19 21:20:55,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand