/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_20-publish-regression_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:20:04,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:20:04,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:20:04,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:20:04,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:20:04,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:20:04,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:20:04,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:20:04,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:20:04,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:20:04,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:20:04,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:20:04,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:20:04,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:20:04,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:20:04,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:20:04,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:20:04,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:20:04,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:20:04,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:20:04,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:20:04,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:20:04,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:20:04,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:20:04,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:20:04,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:20:04,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:20:04,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:20:04,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:20:04,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:20:04,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:20:04,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:20:04,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:20:04,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:20:04,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:20:04,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:20:04,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:20:04,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:20:04,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:20:04,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:20:04,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:20:04,593 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 12:20:04,621 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:20:04,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:20:04,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:20:04,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:20:04,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:20:04,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:20:04,624 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:20:04,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:20:04,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:20:04,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:20:04,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:20:04,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:20:04,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:20:04,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:20:04,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:20:04,625 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:20:04,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:20:04,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:20:04,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:20:04,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:20:04,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:20:04,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:20:04,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:20:04,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:20:04,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:20:04,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:20:04,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:20:04,626 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:20:04,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:20:04,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:20:04,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:20:04,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:20:04,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:20:04,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:20:04,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:20:04,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:20:04,900 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:20:04,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i [2022-12-12 12:20:05,879 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:20:06,078 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:20:06,078 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i [2022-12-12 12:20:06,086 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52fa841d3/f9a6aa23e2584e468cd92523d9e1a5b2/FLAG235254b52 [2022-12-12 12:20:06,097 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52fa841d3/f9a6aa23e2584e468cd92523d9e1a5b2 [2022-12-12 12:20:06,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:20:06,100 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:20:06,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:20:06,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:20:06,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:20:06,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65117729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06, skipping insertion in model container [2022-12-12 12:20:06,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:20:06,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:20:06,275 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_20-publish-regression_true.i[1095,1108] [2022-12-12 12:20:06,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:20:06,426 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:20:06,435 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_20-publish-regression_true.i[1095,1108] [2022-12-12 12:20:06,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:20:06,494 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:20:06,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06 WrapperNode [2022-12-12 12:20:06,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:20:06,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:20:06,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:20:06,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:20:06,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,541 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2022-12-12 12:20:06,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:20:06,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:20:06,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:20:06,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:20:06,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,584 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:20:06,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:20:06,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:20:06,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:20:06,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (1/1) ... [2022-12-12 12:20:06,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:20:06,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:20:06,650 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 12:20:06,695 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 12:20:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 12:20:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:20:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 12:20:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:20:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:20:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 12:20:06,708 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 12:20:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:20:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:20:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:20:06,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:20:06,709 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 12:20:06,810 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:20:06,811 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:20:06,930 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:20:06,935 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:20:06,935 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 12:20:06,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:20:06 BoogieIcfgContainer [2022-12-12 12:20:06,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:20:06,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:20:06,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:20:06,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:20:06,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:20:06" (1/3) ... [2022-12-12 12:20:06,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b61dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:20:06, skipping insertion in model container [2022-12-12 12:20:06,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:06" (2/3) ... [2022-12-12 12:20:06,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b61dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:20:06, skipping insertion in model container [2022-12-12 12:20:06,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:20:06" (3/3) ... [2022-12-12 12:20:06,943 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_20-publish-regression_true.i [2022-12-12 12:20:06,956 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:20:06,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-12 12:20:06,957 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:20:06,989 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-12 12:20:07,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 81 transitions, 170 flow [2022-12-12 12:20:07,045 INFO L130 PetriNetUnfolder]: 3/80 cut-off events. [2022-12-12 12:20:07,045 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 12:20:07,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 3/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2022-12-12 12:20:07,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 81 transitions, 170 flow [2022-12-12 12:20:07,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 73 transitions, 149 flow [2022-12-12 12:20:07,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:20:07,063 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;@6be039f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:20:07,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 12:20:07,072 INFO L130 PetriNetUnfolder]: 0/30 cut-off events. [2022-12-12 12:20:07,072 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:20:07,073 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:07,073 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] [2022-12-12 12:20:07,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 12:20:07,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash -363766738, now seen corresponding path program 1 times [2022-12-12 12:20:07,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:07,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655538753] [2022-12-12 12:20:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:07,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:07,413 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 12:20:07,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:07,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655538753] [2022-12-12 12:20:07,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655538753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:07,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:07,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 12:20:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434132280] [2022-12-12 12:20:07,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:07,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 12:20:07,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:07,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 12:20:07,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 12:20:07,453 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 81 [2022-12-12 12:20:07,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 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 12:20:07,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:07,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 81 [2022-12-12 12:20:07,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:07,595 INFO L130 PetriNetUnfolder]: 19/161 cut-off events. [2022-12-12 12:20:07,595 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 12:20:07,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 161 events. 19/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 551 event pairs, 3 based on Foata normal form. 13/167 useless extension candidates. Maximal degree in co-relation 181. Up to 13 conditions per place. [2022-12-12 12:20:07,597 INFO L137 encePairwiseOnDemand]: 68/81 looper letters, 14 selfloop transitions, 15 changer transitions 3/83 dead transitions. [2022-12-12 12:20:07,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 233 flow [2022-12-12 12:20:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:20:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:20:07,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 572 transitions. [2022-12-12 12:20:07,616 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7846364883401921 [2022-12-12 12:20:07,619 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2022-12-12 12:20:07,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 233 flow [2022-12-12 12:20:07,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 226 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-12 12:20:07,625 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 226 flow [2022-12-12 12:20:07,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 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 12:20:07,626 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:07,626 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 12:20:07,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:20:07,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 12:20:07,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash 995291098, now seen corresponding path program 1 times [2022-12-12 12:20:07,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:07,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162940201] [2022-12-12 12:20:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:07,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:07,805 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 12:20:07,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:07,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162940201] [2022-12-12 12:20:07,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162940201] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:07,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:07,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 12:20:07,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938233297] [2022-12-12 12:20:07,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:07,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 12:20:07,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:07,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 12:20:07,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 12:20:07,809 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 81 [2022-12-12 12:20:07,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 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 12:20:07,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:07,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 81 [2022-12-12 12:20:07,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:07,911 INFO L130 PetriNetUnfolder]: 22/163 cut-off events. [2022-12-12 12:20:07,911 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-12-12 12:20:07,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 163 events. 22/163 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 576 event pairs, 3 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 233. Up to 17 conditions per place. [2022-12-12 12:20:07,913 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 8 selfloop transitions, 7 changer transitions 16/84 dead transitions. [2022-12-12 12:20:07,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 276 flow [2022-12-12 12:20:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 12:20:07,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 12:20:07,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 393 transitions. [2022-12-12 12:20:07,916 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.808641975308642 [2022-12-12 12:20:07,916 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2022-12-12 12:20:07,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 276 flow [2022-12-12 12:20:07,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 84 transitions, 270 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-12 12:20:07,922 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 270 flow [2022-12-12 12:20:07,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 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 12:20:07,924 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:07,928 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] [2022-12-12 12:20:07,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:20:07,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 12:20:07,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1023379525, now seen corresponding path program 1 times [2022-12-12 12:20:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:07,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954406670] [2022-12-12 12:20:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:07,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:08,027 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 12:20:08,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:08,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954406670] [2022-12-12 12:20:08,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954406670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:08,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:08,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 12:20:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653674572] [2022-12-12 12:20:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:08,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 12:20:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:08,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 12:20:08,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 12:20:08,030 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 81 [2022-12-12 12:20:08,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 12:20:08,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:08,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 81 [2022-12-12 12:20:08,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:08,094 INFO L130 PetriNetUnfolder]: 23/188 cut-off events. [2022-12-12 12:20:08,094 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-12-12 12:20:08,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 188 events. 23/188 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 702 event pairs, 2 based on Foata normal form. 3/184 useless extension candidates. Maximal degree in co-relation 296. Up to 44 conditions per place. [2022-12-12 12:20:08,096 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 11 selfloop transitions, 5 changer transitions 10/82 dead transitions. [2022-12-12 12:20:08,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 286 flow [2022-12-12 12:20:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 12:20:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 12:20:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2022-12-12 12:20:08,097 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2022-12-12 12:20:08,097 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2022-12-12 12:20:08,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 286 flow [2022-12-12 12:20:08,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 82 transitions, 270 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-12-12 12:20:08,099 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 270 flow [2022-12-12 12:20:08,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 12:20:08,099 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:08,099 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] [2022-12-12 12:20:08,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 12:20:08,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 12:20:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:08,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1968582702, now seen corresponding path program 1 times [2022-12-12 12:20:08,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:08,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689395387] [2022-12-12 12:20:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:08,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:08,316 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 12:20:08,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:08,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689395387] [2022-12-12 12:20:08,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689395387] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:08,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:08,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:20:08,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103396592] [2022-12-12 12:20:08,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:08,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:20:08,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:08,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:20:08,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:20:08,322 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 81 [2022-12-12 12:20:08,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 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 12:20:08,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:08,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 81 [2022-12-12 12:20:08,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:08,381 INFO L130 PetriNetUnfolder]: 3/96 cut-off events. [2022-12-12 12:20:08,381 INFO L131 PetriNetUnfolder]: For 17/20 co-relation queries the response was YES. [2022-12-12 12:20:08,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 96 events. 3/96 cut-off events. For 17/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 3/99 useless extension candidates. Maximal degree in co-relation 134. Up to 15 conditions per place. [2022-12-12 12:20:08,382 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2022-12-12 12:20:08,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 64 transitions, 232 flow [2022-12-12 12:20:08,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 12:20:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 12:20:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2022-12-12 12:20:08,384 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2022-12-12 12:20:08,385 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2022-12-12 12:20:08,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 64 transitions, 232 flow [2022-12-12 12:20:08,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 163 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-12-12 12:20:08,388 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 163 flow [2022-12-12 12:20:08,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 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 12:20:08,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-12 12:20:08,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-12 12:20:08,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-12 12:20:08,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-12 12:20:08,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-12 12:20:08,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 12:20:08,391 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-12 12:20:08,395 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:20:08,395 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:20:08,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:20:08 BasicIcfg [2022-12-12 12:20:08,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:20:08,402 INFO L158 Benchmark]: Toolchain (without parser) took 2300.59ms. Allocated memory was 204.5MB in the beginning and 283.1MB in the end (delta: 78.6MB). Free memory was 178.7MB in the beginning and 174.6MB in the end (delta: 4.1MB). Peak memory consumption was 82.5MB. Max. memory is 8.0GB. [2022-12-12 12:20:08,404 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 204.5MB. Free memory was 180.4MB in the beginning and 180.3MB in the end (delta: 87.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:20:08,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.86ms. Allocated memory is still 204.5MB. Free memory was 178.2MB in the beginning and 159.1MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 12:20:08,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.33ms. Allocated memory is still 204.5MB. Free memory was 159.1MB in the beginning and 157.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:20:08,404 INFO L158 Benchmark]: Boogie Preprocessor took 48.86ms. Allocated memory is still 204.5MB. Free memory was 157.0MB in the beginning and 155.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 12:20:08,404 INFO L158 Benchmark]: RCFGBuilder took 345.84ms. Allocated memory is still 204.5MB. Free memory was 155.9MB in the beginning and 142.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 12:20:08,406 INFO L158 Benchmark]: TraceAbstraction took 1461.23ms. Allocated memory was 204.5MB in the beginning and 283.1MB in the end (delta: 78.6MB). Free memory was 141.2MB in the beginning and 174.6MB in the end (delta: -33.4MB). Peak memory consumption was 45.8MB. Max. memory is 8.0GB. [2022-12-12 12:20:08,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 204.5MB. Free memory was 180.4MB in the beginning and 180.3MB in the end (delta: 87.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 391.86ms. Allocated memory is still 204.5MB. Free memory was 178.2MB in the beginning and 159.1MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.33ms. Allocated memory is still 204.5MB. Free memory was 159.1MB in the beginning and 157.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.86ms. Allocated memory is still 204.5MB. Free memory was 157.0MB in the beginning and 155.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 345.84ms. Allocated memory is still 204.5MB. Free memory was 155.9MB in the beginning and 142.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1461.23ms. Allocated memory was 204.5MB in the beginning and 283.1MB in the end (delta: 78.6MB). Free memory was 141.2MB in the beginning and 174.6MB in the end (delta: -33.4MB). Peak memory consumption was 45.8MB. 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 102 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113 IncrementalHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 26 mSDtfsCounter, 113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270occurred in iteration=2, InterpolantAutomatonStates: 23, 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, 4 MinimizatonAttempts, 98 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 12:20:08,420 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...