/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:19:30,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:19:30,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:19:30,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:19:30,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:19:30,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:19:30,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:19:30,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:19:30,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:19:30,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:19:30,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:19:30,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:19:30,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:19:30,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:19:30,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:19:30,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:19:30,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:19:30,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:19:30,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:19:30,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:19:30,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:19:30,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:19:30,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:19:30,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:19:30,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:19:30,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:19:30,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:19:30,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:19:30,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:19:30,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:19:30,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:19:30,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:19:30,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:19:30,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:19:30,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:19:30,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:19:30,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:19:30,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:19:30,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:19:30,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:19:30,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:19:30,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 12:19:30,493 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:19:30,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:19:30,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:19:30,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:19:30,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:19:30,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:19:30,496 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:19:30,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:19:30,496 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:19:30,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:19:30,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:19:30,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:19:30,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:19:30,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:19:30,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:19:30,497 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:19:30,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:19:30,497 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:19:30,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:19:30,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:19:30,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:19:30,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:19:30,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:19:30,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:19:30,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:19:30,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:19:30,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:19:30,498 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:19:30,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:19:30,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:19:30,499 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:19:30,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:19:30,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:19:30,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:19:30,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:19:30,792 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:19:30,792 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:19:30,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2022-12-12 12:19:31,843 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:19:32,101 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:19:32,101 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2022-12-12 12:19:32,126 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3497b32e0/2da9186fef0845c88d41d93447bebd8d/FLAG2f64726a3 [2022-12-12 12:19:32,137 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3497b32e0/2da9186fef0845c88d41d93447bebd8d [2022-12-12 12:19:32,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:19:32,140 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:19:32,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:19:32,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:19:32,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:19:32,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca0e957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32, skipping insertion in model container [2022-12-12 12:19:32,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:19:32,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:19:32,314 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2022-12-12 12:19:32,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:19:32,445 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:19:32,455 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2022-12-12 12:19:32,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:19:32,511 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:19:32,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32 WrapperNode [2022-12-12 12:19:32,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:19:32,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:19:32,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:19:32,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:19:32,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,552 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 84 [2022-12-12 12:19:32,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:19:32,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:19:32,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:19:32,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:19:32,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,577 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:19:32,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:19:32,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:19:32,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:19:32,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (1/1) ... [2022-12-12 12:19:32,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:19:32,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:19:32,614 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) [2022-12-12 12:19:32,622 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 [2022-12-12 12:19:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 12:19:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:19:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 12:19:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:19:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:19:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 12:19:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 12:19:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:19:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:19:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:19:32,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:19:32,642 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 12:19:32,723 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:19:32,725 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:19:32,869 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:19:32,887 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:19:32,887 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 12:19:32,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:19:32 BoogieIcfgContainer [2022-12-12 12:19:32,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:19:32,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:19:32,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:19:32,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:19:32,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:19:32" (1/3) ... [2022-12-12 12:19:32,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68dc22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:19:32, skipping insertion in model container [2022-12-12 12:19:32,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:32" (2/3) ... [2022-12-12 12:19:32,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68dc22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:19:32, skipping insertion in model container [2022-12-12 12:19:32,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:19:32" (3/3) ... [2022-12-12 12:19:32,894 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2022-12-12 12:19:32,906 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:19:32,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-12 12:19:32,906 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:19:32,962 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-12 12:19:32,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 194 flow [2022-12-12 12:19:33,047 INFO L130 PetriNetUnfolder]: 4/92 cut-off events. [2022-12-12 12:19:33,047 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 12:19:33,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 4/92 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-12 12:19:33,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 93 transitions, 194 flow [2022-12-12 12:19:33,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 85 transitions, 173 flow [2022-12-12 12:19:33,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:19:33,075 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=false, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f66258e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:19:33,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-12 12:19:33,088 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-12-12 12:19:33,088 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:19:33,088 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:33,089 INFO L214 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] [2022-12-12 12:19:33,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 12:19:33,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:33,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1494401691, now seen corresponding path program 1 times [2022-12-12 12:19:33,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:33,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712164635] [2022-12-12 12:19:33,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:33,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:19:33,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:33,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712164635] [2022-12-12 12:19:33,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712164635] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:19:33,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:19:33,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 12:19:33,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091119715] [2022-12-12 12:19:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:19:33,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 12:19:33,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:33,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 12:19:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 12:19:33,442 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 93 [2022-12-12 12:19:33,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2022-12-12 12:19:33,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:33,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 93 [2022-12-12 12:19:33,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:33,545 INFO L130 PetriNetUnfolder]: 36/180 cut-off events. [2022-12-12 12:19:33,545 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 12:19:33,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 180 events. 36/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 633 event pairs, 1 based on Foata normal form. 25/196 useless extension candidates. Maximal degree in co-relation 230. Up to 36 conditions per place. [2022-12-12 12:19:33,547 INFO L137 encePairwiseOnDemand]: 81/93 looper letters, 23 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2022-12-12 12:19:33,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 239 flow [2022-12-12 12:19:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 12:19:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 12:19:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 488 transitions. [2022-12-12 12:19:33,564 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7496159754224271 [2022-12-12 12:19:33,568 INFO L295 CegarLoopForPetriNet]: 85 programPoint places, 0 predicate places. [2022-12-12 12:19:33,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 239 flow [2022-12-12 12:19:33,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 228 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-12 12:19:33,572 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 228 flow [2022-12-12 12:19:33,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2022-12-12 12:19:33,573 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:33,573 INFO L214 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] [2022-12-12 12:19:33,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:19:33,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 12:19:33,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash -29031025, now seen corresponding path program 1 times [2022-12-12 12:19:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:33,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695734869] [2022-12-12 12:19:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:19:33,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:33,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695734869] [2022-12-12 12:19:33,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695734869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:19:33,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:19:33,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:19:33,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265316092] [2022-12-12 12:19:33,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:19:33,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:19:33,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:19:33,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:19:33,757 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 93 [2022-12-12 12:19:33,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 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) [2022-12-12 12:19:33,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:33,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 93 [2022-12-12 12:19:33,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:33,915 INFO L130 PetriNetUnfolder]: 128/499 cut-off events. [2022-12-12 12:19:33,915 INFO L131 PetriNetUnfolder]: For 79/96 co-relation queries the response was YES. [2022-12-12 12:19:33,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 499 events. 128/499 cut-off events. For 79/96 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2890 event pairs, 29 based on Foata normal form. 6/462 useless extension candidates. Maximal degree in co-relation 975. Up to 129 conditions per place. [2022-12-12 12:19:33,922 INFO L137 encePairwiseOnDemand]: 80/93 looper letters, 61 selfloop transitions, 23 changer transitions 2/139 dead transitions. [2022-12-12 12:19:33,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 139 transitions, 582 flow [2022-12-12 12:19:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 12:19:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 12:19:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 818 transitions. [2022-12-12 12:19:33,924 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7329749103942652 [2022-12-12 12:19:33,925 INFO L295 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2022-12-12 12:19:33,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 139 transitions, 582 flow [2022-12-12 12:19:33,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 139 transitions, 572 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-12-12 12:19:33,934 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 139 transitions, 572 flow [2022-12-12 12:19:33,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 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) [2022-12-12 12:19:33,935 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:33,939 INFO L214 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] [2022-12-12 12:19:33,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:19:33,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 12:19:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash 479772624, now seen corresponding path program 1 times [2022-12-12 12:19:33,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:33,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170213255] [2022-12-12 12:19:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:33,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:19:34,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:34,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170213255] [2022-12-12 12:19:34,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170213255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:19:34,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:19:34,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:19:34,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64550370] [2022-12-12 12:19:34,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:19:34,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:19:34,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:34,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:19:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:19:34,114 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 93 [2022-12-12 12:19:34,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 139 transitions, 572 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2022-12-12 12:19:34,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:34,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 93 [2022-12-12 12:19:34,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:34,337 INFO L130 PetriNetUnfolder]: 199/768 cut-off events. [2022-12-12 12:19:34,337 INFO L131 PetriNetUnfolder]: For 323/381 co-relation queries the response was YES. [2022-12-12 12:19:34,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 768 events. 199/768 cut-off events. For 323/381 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5209 event pairs, 26 based on Foata normal form. 18/733 useless extension candidates. Maximal degree in co-relation 1922. Up to 209 conditions per place. [2022-12-12 12:19:34,340 INFO L137 encePairwiseOnDemand]: 79/93 looper letters, 86 selfloop transitions, 48 changer transitions 14/215 dead transitions. [2022-12-12 12:19:34,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 215 transitions, 1304 flow [2022-12-12 12:19:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 12:19:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 12:19:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 869 transitions. [2022-12-12 12:19:34,342 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7187758478081059 [2022-12-12 12:19:34,343 INFO L295 CegarLoopForPetriNet]: 85 programPoint places, 20 predicate places. [2022-12-12 12:19:34,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 215 transitions, 1304 flow [2022-12-12 12:19:34,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 215 transitions, 1187 flow, removed 53 selfloop flow, removed 3 redundant places. [2022-12-12 12:19:34,347 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 215 transitions, 1187 flow [2022-12-12 12:19:34,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2022-12-12 12:19:34,347 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:34,347 INFO L214 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] [2022-12-12 12:19:34,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 12:19:34,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 12:19:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash -437318033, now seen corresponding path program 1 times [2022-12-12 12:19:34,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:34,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309636451] [2022-12-12 12:19:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:34,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:19:34,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:34,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309636451] [2022-12-12 12:19:34,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309636451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:19:34,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:19:34,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 12:19:34,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645466334] [2022-12-12 12:19:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:19:34,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 12:19:34,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 12:19:34,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 12:19:34,428 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 93 [2022-12-12 12:19:34,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 215 transitions, 1187 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 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) [2022-12-12 12:19:34,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:34,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 93 [2022-12-12 12:19:34,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:34,588 INFO L130 PetriNetUnfolder]: 239/991 cut-off events. [2022-12-12 12:19:34,588 INFO L131 PetriNetUnfolder]: For 489/581 co-relation queries the response was YES. [2022-12-12 12:19:34,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2882 conditions, 991 events. 239/991 cut-off events. For 489/581 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7425 event pairs, 28 based on Foata normal form. 9/974 useless extension candidates. Maximal degree in co-relation 2835. Up to 203 conditions per place. [2022-12-12 12:19:34,592 INFO L137 encePairwiseOnDemand]: 83/93 looper letters, 110 selfloop transitions, 52 changer transitions 85/310 dead transitions. [2022-12-12 12:19:34,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 310 transitions, 2322 flow [2022-12-12 12:19:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 12:19:34,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 12:19:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 564 transitions. [2022-12-12 12:19:34,594 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7580645161290323 [2022-12-12 12:19:34,595 INFO L295 CegarLoopForPetriNet]: 85 programPoint places, 24 predicate places. [2022-12-12 12:19:34,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 310 transitions, 2322 flow [2022-12-12 12:19:34,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 310 transitions, 2292 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-12-12 12:19:34,600 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 310 transitions, 2292 flow [2022-12-12 12:19:34,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 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) [2022-12-12 12:19:34,601 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:34,601 INFO L214 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] [2022-12-12 12:19:34,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 12:19:34,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 12:19:34,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:34,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2090607477, now seen corresponding path program 1 times [2022-12-12 12:19:34,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:34,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831532637] [2022-12-12 12:19:34,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:34,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:19:34,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:34,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831532637] [2022-12-12 12:19:34,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831532637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:19:34,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:19:34,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 12:19:34,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238934759] [2022-12-12 12:19:34,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:19:34,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 12:19:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 12:19:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 12:19:34,678 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 93 [2022-12-12 12:19:34,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 310 transitions, 2292 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-12-12 12:19:34,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:34,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 93 [2022-12-12 12:19:34,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:34,700 INFO L130 PetriNetUnfolder]: 5/120 cut-off events. [2022-12-12 12:19:34,701 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-12-12 12:19:34,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 120 events. 5/120 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 153 event pairs, 1 based on Foata normal form. 3/121 useless extension candidates. Maximal degree in co-relation 233. Up to 20 conditions per place. [2022-12-12 12:19:34,701 INFO L137 encePairwiseOnDemand]: 89/93 looper letters, 7 selfloop transitions, 4 changer transitions 10/94 dead transitions. [2022-12-12 12:19:34,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 435 flow [2022-12-12 12:19:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 12:19:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 12:19:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2022-12-12 12:19:34,702 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8315412186379928 [2022-12-12 12:19:34,704 INFO L295 CegarLoopForPetriNet]: 85 programPoint places, 20 predicate places. [2022-12-12 12:19:34,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 435 flow [2022-12-12 12:19:34,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 94 transitions, 322 flow, removed 41 selfloop flow, removed 7 redundant places. [2022-12-12 12:19:34,706 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 322 flow [2022-12-12 12:19:34,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-12-12 12:19:34,709 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:34,709 INFO L214 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] [2022-12-12 12:19:34,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 12:19:34,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 12:19:34,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:34,712 INFO L85 PathProgramCache]: Analyzing trace with hash 790354309, now seen corresponding path program 1 times [2022-12-12 12:19:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:34,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919298255] [2022-12-12 12:19:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:34,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:19:34,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:34,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919298255] [2022-12-12 12:19:34,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919298255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:19:34,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:19:34,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 12:19:34,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474920989] [2022-12-12 12:19:34,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:19:34,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 12:19:34,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:34,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 12:19:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-12 12:19:34,912 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 93 [2022-12-12 12:19:34,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 322 flow. Second operand has 9 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 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) [2022-12-12 12:19:34,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:34,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 93 [2022-12-12 12:19:34,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:35,150 INFO L130 PetriNetUnfolder]: 7/120 cut-off events. [2022-12-12 12:19:35,150 INFO L131 PetriNetUnfolder]: For 29/31 co-relation queries the response was YES. [2022-12-12 12:19:35,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 120 events. 7/120 cut-off events. For 29/31 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 151 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 227. Up to 21 conditions per place. [2022-12-12 12:19:35,151 INFO L137 encePairwiseOnDemand]: 77/93 looper letters, 8 selfloop transitions, 12 changer transitions 33/98 dead transitions. [2022-12-12 12:19:35,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 98 transitions, 432 flow [2022-12-12 12:19:35,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-12 12:19:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-12 12:19:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1216 transitions. [2022-12-12 12:19:35,153 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6537634408602151 [2022-12-12 12:19:35,154 INFO L295 CegarLoopForPetriNet]: 85 programPoint places, 30 predicate places. [2022-12-12 12:19:35,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 98 transitions, 432 flow [2022-12-12 12:19:35,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 98 transitions, 339 flow, removed 21 selfloop flow, removed 14 redundant places. [2022-12-12 12:19:35,155 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 339 flow [2022-12-12 12:19:35,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 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) [2022-12-12 12:19:35,156 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:35,156 INFO L214 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] [2022-12-12 12:19:35,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 12:19:35,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 12:19:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash 139721172, now seen corresponding path program 1 times [2022-12-12 12:19:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:35,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776564752] [2022-12-12 12:19:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:35,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:19:35,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:35,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776564752] [2022-12-12 12:19:35,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776564752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:19:35,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:19:35,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 12:19:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162653559] [2022-12-12 12:19:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:19:35,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 12:19:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:35,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 12:19:35,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 12:19:35,269 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 93 [2022-12-12 12:19:35,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 339 flow. Second operand has 8 states, 8 states have (on average 62.5) internal successors, (500), 8 states have internal predecessors, (500), 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) [2022-12-12 12:19:35,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:35,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 93 [2022-12-12 12:19:35,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:35,430 INFO L130 PetriNetUnfolder]: 10/121 cut-off events. [2022-12-12 12:19:35,430 INFO L131 PetriNetUnfolder]: For 46/50 co-relation queries the response was YES. [2022-12-12 12:19:35,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 121 events. 10/121 cut-off events. For 46/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 153 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 224. Up to 15 conditions per place. [2022-12-12 12:19:35,431 INFO L137 encePairwiseOnDemand]: 80/93 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2022-12-12 12:19:35,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 97 transitions, 423 flow [2022-12-12 12:19:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:19:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:19:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1002 transitions. [2022-12-12 12:19:35,433 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6733870967741935 [2022-12-12 12:19:35,433 INFO L295 CegarLoopForPetriNet]: 85 programPoint places, 29 predicate places. [2022-12-12 12:19:35,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 97 transitions, 423 flow [2022-12-12 12:19:35,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 340 flow, removed 24 selfloop flow, removed 13 redundant places. [2022-12-12 12:19:35,435 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 340 flow [2022-12-12 12:19:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 62.5) internal successors, (500), 8 states have internal predecessors, (500), 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) [2022-12-12 12:19:35,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-12 12:19:35,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-12 12:19:35,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-12 12:19:35,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-12-12 12:19:35,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-12-12 12:19:35,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-12-12 12:19:35,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-12 12:19:35,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 12:19:35,438 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:19:35,441 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:19:35,441 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:19:35,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:19:35 BasicIcfg [2022-12-12 12:19:35,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:19:35,445 INFO L158 Benchmark]: Toolchain (without parser) took 3304.65ms. Allocated memory was 190.8MB in the beginning and 248.5MB in the end (delta: 57.7MB). Free memory was 165.3MB in the beginning and 132.3MB in the end (delta: 33.0MB). Peak memory consumption was 92.0MB. Max. memory is 8.0GB. [2022-12-12 12:19:35,445 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 167.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:19:35,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.35ms. Allocated memory is still 190.8MB. Free memory was 165.3MB in the beginning and 146.1MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 12:19:35,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.93ms. Allocated memory is still 190.8MB. Free memory was 146.1MB in the beginning and 144.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:19:35,446 INFO L158 Benchmark]: Boogie Preprocessor took 26.15ms. Allocated memory is still 190.8MB. Free memory was 144.0MB in the beginning and 142.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:19:35,446 INFO L158 Benchmark]: RCFGBuilder took 308.36ms. Allocated memory is still 190.8MB. Free memory was 142.5MB in the beginning and 128.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 12:19:35,446 INFO L158 Benchmark]: TraceAbstraction took 2554.12ms. Allocated memory was 190.8MB in the beginning and 248.5MB in the end (delta: 57.7MB). Free memory was 127.3MB in the beginning and 132.3MB in the end (delta: -5.0MB). Peak memory consumption was 54.2MB. Max. memory is 8.0GB. [2022-12-12 12:19:35,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 167.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 370.35ms. Allocated memory is still 190.8MB. Free memory was 165.3MB in the beginning and 146.1MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.93ms. Allocated memory is still 190.8MB. Free memory was 146.1MB in the beginning and 144.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.15ms. Allocated memory is still 190.8MB. Free memory was 144.0MB in the beginning and 142.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 308.36ms. Allocated memory is still 190.8MB. Free memory was 142.5MB in the beginning and 128.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2554.12ms. Allocated memory was 190.8MB in the beginning and 248.5MB in the end (delta: 57.7MB). Free memory was 127.3MB in the beginning and 132.3MB in the end (delta: -5.0MB). Peak memory consumption was 54.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 116 locations, 7 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: 2.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 360 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 360 mSDsluCounter, 383 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 261 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 436 IncrementalHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 122 mSDtfsCounter, 436 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2292occurred in iteration=4, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 457 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 348 NumberOfCodeBlocks, 348 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 341 ConstructedInterpolants, 0 QuantifiedInterpolants, 1451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 12:19:35,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...