/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-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_40-traces-ex-6_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 19:02:41,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 19:02:41,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 19:02:41,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 19:02:41,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 19:02:41,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 19:02:41,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 19:02:41,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 19:02:41,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 19:02:41,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 19:02:41,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 19:02:41,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 19:02:41,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 19:02:41,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 19:02:41,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 19:02:41,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 19:02:41,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 19:02:41,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 19:02:41,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 19:02:41,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 19:02:41,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 19:02:41,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 19:02:41,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 19:02:41,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 19:02:41,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 19:02:41,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 19:02:41,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 19:02:41,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 19:02:41,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 19:02:41,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 19:02:41,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 19:02:41,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 19:02:41,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 19:02:41,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 19:02:41,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 19:02:41,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 19:02:41,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 19:02:41,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 19:02:41,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 19:02:41,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 19:02:41,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 19:02:41,763 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-SemanticLbe.epf [2022-12-12 19:02:41,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 19:02:41,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 19:02:41,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 19:02:41,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 19:02:41,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 19:02:41,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 19:02:41,791 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 19:02:41,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 19:02:41,792 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 19:02:41,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 19:02:41,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 19:02:41,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 19:02:41,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 19:02:41,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 19:02:41,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 19:02:41,793 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 19:02:41,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 19:02:41,794 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 19:02:41,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 19:02:41,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 19:02:41,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 19:02:41,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 19:02:41,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 19:02:41,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:02:41,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 19:02:41,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 19:02:41,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 19:02:41,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 19:02:41,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 19:02:41,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 19:02:41,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 19:02:42,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 19:02:42,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 19:02:42,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 19:02:42,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 19:02:42,138 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 19:02:42,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_40-traces-ex-6_true.i [2022-12-12 19:02:43,345 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 19:02:43,614 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 19:02:43,615 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_40-traces-ex-6_true.i [2022-12-12 19:02:43,625 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16cf05a12/fa70d9f3e6104ff9bb7acff78ccb0aa8/FLAG616e7be6b [2022-12-12 19:02:43,647 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16cf05a12/fa70d9f3e6104ff9bb7acff78ccb0aa8 [2022-12-12 19:02:43,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 19:02:43,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 19:02:43,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 19:02:43,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 19:02:43,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 19:02:43,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:02:43" (1/1) ... [2022-12-12 19:02:43,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17818ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:43, skipping insertion in model container [2022-12-12 19:02:43,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:02:43" (1/1) ... [2022-12-12 19:02:43,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 19:02:43,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 19:02:43,858 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_40-traces-ex-6_true.i[1088,1101] [2022-12-12 19:02:44,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:02:44,024 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 19:02:44,037 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_40-traces-ex-6_true.i[1088,1101] [2022-12-12 19:02:44,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:02:44,105 INFO L208 MainTranslator]: Completed translation [2022-12-12 19:02:44,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44 WrapperNode [2022-12-12 19:02:44,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 19:02:44,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 19:02:44,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 19:02:44,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 19:02:44,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,147 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-12-12 19:02:44,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 19:02:44,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 19:02:44,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 19:02:44,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 19:02:44,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,182 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 19:02:44,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 19:02:44,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 19:02:44,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 19:02:44,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (1/1) ... [2022-12-12 19:02:44,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:02:44,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:02:44,211 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 19:02:44,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 19:02:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 19:02:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 19:02:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 19:02:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 19:02:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 19:02:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 19:02:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 19:02:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 19:02:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 19:02:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 19:02:44,254 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 19:02:44,351 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 19:02:44,353 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 19:02:44,466 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 19:02:44,472 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 19:02:44,472 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 19:02:44,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:02:44 BoogieIcfgContainer [2022-12-12 19:02:44,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 19:02:44,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 19:02:44,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 19:02:44,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 19:02:44,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 07:02:43" (1/3) ... [2022-12-12 19:02:44,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d77d2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:02:44, skipping insertion in model container [2022-12-12 19:02:44,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:44" (2/3) ... [2022-12-12 19:02:44,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d77d2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:02:44, skipping insertion in model container [2022-12-12 19:02:44,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:02:44" (3/3) ... [2022-12-12 19:02:44,481 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_40-traces-ex-6_true.i [2022-12-12 19:02:44,496 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 19:02:44,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 19:02:44,496 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 19:02:44,541 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 19:02:44,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 127 flow [2022-12-12 19:02:44,669 INFO L130 PetriNetUnfolder]: 1/60 cut-off events. [2022-12-12 19:02:44,670 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:02:44,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2022-12-12 19:02:44,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 61 transitions, 127 flow [2022-12-12 19:02:44,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 107 flow [2022-12-12 19:02:44,677 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 19:02:44,700 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 52 transitions, 107 flow [2022-12-12 19:02:44,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 107 flow [2022-12-12 19:02:44,736 INFO L130 PetriNetUnfolder]: 0/52 cut-off events. [2022-12-12 19:02:44,737 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:02:44,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 52 events. 0/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-12-12 19:02:44,739 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 52 transitions, 107 flow [2022-12-12 19:02:44,740 INFO L226 LiptonReduction]: Number of co-enabled transitions 264 [2022-12-12 19:02:47,623 INFO L241 LiptonReduction]: Total number of compositions: 44 [2022-12-12 19:02:47,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 19:02:47,640 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;@33cfb64d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 19:02:47,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-12 19:02:47,644 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-12 19:02:47,644 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:02:47,645 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:47,645 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-12 19:02:47,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 19:02:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:47,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1994105818, now seen corresponding path program 1 times [2022-12-12 19:02:47,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:47,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312770502] [2022-12-12 19:02:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:47,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:47,914 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 19:02:47,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:47,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312770502] [2022-12-12 19:02:47,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312770502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:47,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:47,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 19:02:47,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620255761] [2022-12-12 19:02:47,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:47,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:02:47,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:47,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:02:47,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:02:47,943 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-12 19:02:47,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 19:02:47,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:47,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-12 19:02:47,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:47,998 INFO L130 PetriNetUnfolder]: 27/78 cut-off events. [2022-12-12 19:02:47,998 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:02:47,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 78 events. 27/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 274 event pairs, 24 based on Foata normal form. 9/60 useless extension candidates. Maximal degree in co-relation 147. Up to 65 conditions per place. [2022-12-12 19:02:48,000 INFO L137 encePairwiseOnDemand]: 10/17 looper letters, 9 selfloop transitions, 6 changer transitions 4/20 dead transitions. [2022-12-12 19:02:48,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 79 flow [2022-12-12 19:02:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:02:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:02:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2022-12-12 19:02:48,010 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2022-12-12 19:02:48,015 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2022-12-12 19:02:48,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 20 transitions, 79 flow [2022-12-12 19:02:48,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 16 transitions, 65 flow [2022-12-12 19:02:48,018 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 65 flow [2022-12-12 19:02:48,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 19:02:48,018 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:48,018 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:48,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 19:02:48,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 19:02:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash 800255505, now seen corresponding path program 1 times [2022-12-12 19:02:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:48,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739237271] [2022-12-12 19:02:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:48,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:48,119 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 19:02:48,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:48,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739237271] [2022-12-12 19:02:48,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739237271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:48,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:48,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:02:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655590447] [2022-12-12 19:02:48,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:48,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:02:48,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:48,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:02:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:02:48,122 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-12 19:02:48,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 19:02:48,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:48,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-12 19:02:48,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:48,158 INFO L130 PetriNetUnfolder]: 14/55 cut-off events. [2022-12-12 19:02:48,158 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 19:02:48,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 55 events. 14/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 185 event pairs, 4 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 151. Up to 45 conditions per place. [2022-12-12 19:02:48,159 INFO L137 encePairwiseOnDemand]: 10/17 looper letters, 10 selfloop transitions, 6 changer transitions 5/22 dead transitions. [2022-12-12 19:02:48,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 22 transitions, 131 flow [2022-12-12 19:02:48,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:02:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:02:48,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 26 transitions. [2022-12-12 19:02:48,160 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2022-12-12 19:02:48,161 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2022-12-12 19:02:48,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 22 transitions, 131 flow [2022-12-12 19:02:48,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 101 flow [2022-12-12 19:02:48,162 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 101 flow [2022-12-12 19:02:48,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 19:02:48,162 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:48,162 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:48,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 19:02:48,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 19:02:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash 780305145, now seen corresponding path program 2 times [2022-12-12 19:02:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:48,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838873907] [2022-12-12 19:02:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:48,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:48,316 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 19:02:48,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:48,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838873907] [2022-12-12 19:02:48,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838873907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:48,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:48,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:02:48,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675428978] [2022-12-12 19:02:48,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:48,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:02:48,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:48,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:02:48,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:02:48,320 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-12 19:02:48,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 19:02:48,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:48,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-12 19:02:48,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:48,387 INFO L130 PetriNetUnfolder]: 6/39 cut-off events. [2022-12-12 19:02:48,387 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 19:02:48,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 39 events. 6/39 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 0 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 137. Up to 33 conditions per place. [2022-12-12 19:02:48,388 INFO L137 encePairwiseOnDemand]: 13/17 looper letters, 8 selfloop transitions, 4 changer transitions 7/20 dead transitions. [2022-12-12 19:02:48,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 20 transitions, 157 flow [2022-12-12 19:02:48,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:02:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:02:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-12-12 19:02:48,391 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2022-12-12 19:02:48,392 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2022-12-12 19:02:48,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 20 transitions, 157 flow [2022-12-12 19:02:48,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 13 transitions, 101 flow [2022-12-12 19:02:48,393 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 13 transitions, 101 flow [2022-12-12 19:02:48,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 19:02:48,394 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:48,394 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:48,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 19:02:48,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 19:02:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:48,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1564276330, now seen corresponding path program 1 times [2022-12-12 19:02:48,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:48,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632745459] [2022-12-12 19:02:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:48,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:48,536 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 19:02:48,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:48,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632745459] [2022-12-12 19:02:48,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632745459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:48,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:48,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:02:48,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943557300] [2022-12-12 19:02:48,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:48,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:02:48,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:48,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:02:48,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:02:48,538 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-12 19:02:48,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 13 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 19:02:48,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:48,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-12 19:02:48,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:48,548 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-12 19:02:48,549 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 19:02:48,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 6 events. 0/6 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/7 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-12-12 19:02:48,549 INFO L137 encePairwiseOnDemand]: 14/17 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2022-12-12 19:02:48,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 6 transitions, 55 flow [2022-12-12 19:02:48,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:02:48,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:02:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-12-12 19:02:48,550 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.20588235294117646 [2022-12-12 19:02:48,551 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2022-12-12 19:02:48,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 6 transitions, 55 flow [2022-12-12 19:02:48,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 19:02:48,552 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 19:02:48,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 19:02:48,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-12 19:02:48,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-12-12 19:02:48,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 19:02:48,555 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-12-12 19:02:48,560 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 19:02:48,560 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 19:02:48,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 07:02:48 BasicIcfg [2022-12-12 19:02:48,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 19:02:48,568 INFO L158 Benchmark]: Toolchain (without parser) took 4916.87ms. Allocated memory was 186.6MB in the beginning and 232.8MB in the end (delta: 46.1MB). Free memory was 160.7MB in the beginning and 178.1MB in the end (delta: -17.4MB). Peak memory consumption was 29.7MB. Max. memory is 8.0GB. [2022-12-12 19:02:48,569 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 163.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 19:02:48,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.07ms. Allocated memory is still 186.6MB. Free memory was 160.7MB in the beginning and 141.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 19:02:48,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.11ms. Allocated memory is still 186.6MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 19:02:48,573 INFO L158 Benchmark]: Boogie Preprocessor took 36.28ms. Allocated memory is still 186.6MB. Free memory was 139.7MB in the beginning and 138.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 19:02:48,575 INFO L158 Benchmark]: RCFGBuilder took 289.23ms. Allocated memory is still 186.6MB. Free memory was 138.7MB in the beginning and 126.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 19:02:48,576 INFO L158 Benchmark]: TraceAbstraction took 4091.48ms. Allocated memory was 186.6MB in the beginning and 232.8MB in the end (delta: 46.1MB). Free memory was 125.1MB in the beginning and 178.1MB in the end (delta: -53.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 19:02:48,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 163.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 454.07ms. Allocated memory is still 186.6MB. Free memory was 160.7MB in the beginning and 141.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.11ms. Allocated memory is still 186.6MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.28ms. Allocated memory is still 186.6MB. Free memory was 139.7MB in the beginning and 138.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 289.23ms. Allocated memory is still 186.6MB. Free memory was 138.7MB in the beginning and 126.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4091.48ms. Allocated memory was 186.6MB in the beginning and 232.8MB in the end (delta: 46.1MB). Free memory was 125.1MB in the beginning and 178.1MB in the end (delta: -53.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 56 PlacesBefore, 21 PlacesAfterwards, 52 TransitionsBefore, 17 TransitionsAfterwards, 264 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 27 TrivialYvCompositions, 15 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 374, independent: 309, independent conditional: 309, independent unconditional: 0, dependent: 65, dependent conditional: 65, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 374, independent: 309, independent conditional: 0, independent unconditional: 309, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 374, independent: 309, independent conditional: 0, independent unconditional: 309, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 374, independent: 309, independent conditional: 0, independent unconditional: 309, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 232, independent: 202, independent conditional: 0, independent unconditional: 202, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 232, independent: 182, independent conditional: 0, independent unconditional: 182, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 123, independent: 40, independent conditional: 0, independent unconditional: 40, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 374, independent: 107, independent conditional: 0, independent unconditional: 107, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 232, unknown conditional: 0, unknown unconditional: 232] , Statistics on independence cache: Total cache size (in pairs): 371, Positive cache size: 341, Positive conditional cache size: 0, Positive unconditional cache size: 341, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - 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, 74 locations, 2 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: 4.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 1 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 155 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 164 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 19:02:48,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...