/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 10:00:07,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:00:07,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:00:07,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:00:07,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:00:07,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:00:07,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:00:07,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:00:07,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:00:07,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:00:07,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:00:07,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:00:07,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:00:07,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:00:07,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:00:07,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:00:07,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:00:07,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:00:07,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:00:07,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:00:07,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:00:07,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:00:07,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:00:07,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:00:07,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:00:07,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:00:07,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:00:07,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:00:07,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:00:07,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:00:07,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:00:07,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:00:07,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:00:07,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:00:07,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:00:07,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:00:07,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:00:07,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:00:07,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:00:07,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:00:07,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:00:07,601 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-RepeatedSemanticLbeWithPredicates.epf [2022-12-13 10:00:07,641 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:00:07,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:00:07,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:00:07,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:00:07,644 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:00:07,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:00:07,644 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 10:00:07,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:00:07,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 10:00:07,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:00:07,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 10:00:07,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:00:07,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 10:00:07,646 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 10:00:07,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:00:07,646 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:00:07,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 10:00:07,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:00:07,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:00:07,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 10:00:07,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:00:07,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:00:07,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:00:07,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:00:07,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 10:00:07,647 INFO L138 SettingsManager]: * Use conditional commutativity for large block encoding in concurrent analysis=CONDITIONAL_CONJUNCTIVE [2022-12-13 10:00:07,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 10:00:07,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:00:07,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 10:00:07,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 10:00:07,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:00:07,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:00:07,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:00:07,903 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:00:07,904 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:00:07,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c [2022-12-13 10:00:08,855 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:00:09,016 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:00:09,017 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c [2022-12-13 10:00:09,022 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4cdeaab6/34d5b752a5874b1baa2e0141012edbbe/FLAG8df0f29ef [2022-12-13 10:00:09,039 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4cdeaab6/34d5b752a5874b1baa2e0141012edbbe [2022-12-13 10:00:09,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:00:09,042 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 10:00:09,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:00:09,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:00:09,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:00:09,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd3e366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09, skipping insertion in model container [2022-12-13 10:00:09,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:00:09,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:00:09,193 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c[1849,1862] [2022-12-13 10:00:09,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:00:09,203 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:00:09,217 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c[1849,1862] [2022-12-13 10:00:09,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:00:09,228 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:00:09,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09 WrapperNode [2022-12-13 10:00:09,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:00:09,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:00:09,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:00:09,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:00:09,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,249 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-12-13 10:00:09,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:00:09,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:00:09,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:00:09,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:00:09,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,264 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:00:09,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:00:09,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:00:09,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:00:09,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (1/1) ... [2022-12-13 10:00:09,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:00:09,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 10:00:09,292 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) [2022-12-13 10:00:09,294 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 [2022-12-13 10:00:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:00:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 10:00:09,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 10:00:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 10:00:09,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 10:00:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 10:00:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 10:00:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 10:00:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:00:09,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:00:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 10:00:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 10:00:09,327 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 10:00:09,417 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 10:00:09,418 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:00:09,556 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 10:00:09,560 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:00:09,561 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 10:00:09,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:00:09 BoogieIcfgContainer [2022-12-13 10:00:09,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:00:09,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:00:09,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:00:09,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:00:09,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:00:09" (1/3) ... [2022-12-13 10:00:09,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5f686b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:00:09, skipping insertion in model container [2022-12-13 10:00:09,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:00:09" (2/3) ... [2022-12-13 10:00:09,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5f686b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:00:09, skipping insertion in model container [2022-12-13 10:00:09,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:00:09" (3/3) ... [2022-12-13 10:00:09,570 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c [2022-12-13 10:00:09,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:00:09,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 10:00:09,584 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 10:00:09,640 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 10:00:09,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 164 flow [2022-12-13 10:00:09,714 INFO L130 PetriNetUnfolder]: 6/72 cut-off events. [2022-12-13 10:00:09,714 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 10:00:09,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 72 events. 6/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2022-12-13 10:00:09,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 74 transitions, 164 flow [2022-12-13 10:00:09,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 64 transitions, 140 flow [2022-12-13 10:00:09,721 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:00:09,738 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 64 transitions, 140 flow [2022-12-13 10:00:09,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 140 flow [2022-12-13 10:00:09,783 INFO L130 PetriNetUnfolder]: 6/64 cut-off events. [2022-12-13 10:00:09,783 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 10:00:09,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 6/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2022-12-13 10:00:09,785 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 64 transitions, 140 flow [2022-12-13 10:00:09,785 INFO L226 LiptonReduction]: Number of co-enabled transitions 252 [2022-12-13 10:00:11,581 INFO L241 LiptonReduction]: Total number of compositions: 51 [2022-12-13 10:00:11,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:00:11,596 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=REPEATED_LIPTON_PN, 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;@5092b307, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_CONJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 10:00:11,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 10:00:11,600 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2022-12-13 10:00:11,600 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 10:00:11,600 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:00:11,600 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:00:11,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 10:00:11,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:00:11,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1519162272, now seen corresponding path program 1 times [2022-12-13 10:00:11,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:00:11,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793959271] [2022-12-13 10:00:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:00:11,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:00:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:00:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:12,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:00:12,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793959271] [2022-12-13 10:00:12,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793959271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:00:12,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:00:12,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 10:00:12,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764139706] [2022-12-13 10:00:12,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:00:12,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:00:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:00:12,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:00:12,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:00:12,036 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-13 10:00:12,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-12-13 10:00:12,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:00:12,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-13 10:00:12,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:00:12,108 INFO L130 PetriNetUnfolder]: 41/77 cut-off events. [2022-12-13 10:00:12,108 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 10:00:12,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 164 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2022-12-13 10:00:12,111 INFO L137 encePairwiseOnDemand]: 9/13 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2022-12-13 10:00:12,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2022-12-13 10:00:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:00:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:00:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2022-12-13 10:00:12,122 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2022-12-13 10:00:12,123 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 24 transitions. [2022-12-13 10:00:12,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow [2022-12-13 10:00:12,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 10:00:12,128 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow [2022-12-13 10:00:12,129 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2022-12-13 10:00:12,133 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2022-12-13 10:00:12,133 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:00:12,134 INFO L89 Accepts]: Start accepts. Operand has 17 places, 15 transitions, 49 flow [2022-12-13 10:00:12,136 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:00:12,136 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:00:12,137 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 15 transitions, 49 flow [2022-12-13 10:00:12,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 17 places, 15 transitions, 49 flow [2022-12-13 10:00:12,152 INFO L130 PetriNetUnfolder]: 5/23 cut-off events. [2022-12-13 10:00:12,153 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:00:12,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 23 events. 5/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 18. Up to 8 conditions per place. [2022-12-13 10:00:12,155 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 15 transitions, 49 flow [2022-12-13 10:00:12,155 INFO L226 LiptonReduction]: Number of co-enabled transitions 46 [2022-12-13 10:00:12,156 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:00:12,157 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 24 [2022-12-13 10:00:12,157 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow [2022-12-13 10:00:12,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-12-13 10:00:12,158 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:00:12,158 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:00:12,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 10:00:12,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 10:00:12,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:00:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1048590378, now seen corresponding path program 1 times [2022-12-13 10:00:12,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:00:12,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709930770] [2022-12-13 10:00:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:00:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:00:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:00:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:12,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:00:12,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709930770] [2022-12-13 10:00:12,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709930770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:00:12,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:00:12,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:00:12,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225283020] [2022-12-13 10:00:12,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:00:12,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:00:12,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:00:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:00:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:00:12,321 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-13 10:00:12,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 3.0) 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) [2022-12-13 10:00:12,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:00:12,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-13 10:00:12,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:00:12,388 INFO L130 PetriNetUnfolder]: 35/71 cut-off events. [2022-12-13 10:00:12,388 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-13 10:00:12,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 71 events. 35/71 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 161 event pairs, 6 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 55. Up to 45 conditions per place. [2022-12-13 10:00:12,390 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 15 selfloop transitions, 3 changer transitions 10/28 dead transitions. [2022-12-13 10:00:12,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 28 transitions, 135 flow [2022-12-13 10:00:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:00:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:00:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2022-12-13 10:00:12,392 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2022-12-13 10:00:12,392 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 4 states and 30 transitions. [2022-12-13 10:00:12,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 28 transitions, 135 flow [2022-12-13 10:00:12,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 10:00:12,393 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 59 flow [2022-12-13 10:00:12,393 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2022-12-13 10:00:12,393 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2022-12-13 10:00:12,394 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:00:12,394 INFO L89 Accepts]: Start accepts. Operand has 20 places, 15 transitions, 59 flow [2022-12-13 10:00:12,394 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:00:12,394 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:00:12,394 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 15 transitions, 59 flow [2022-12-13 10:00:12,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 19 places, 15 transitions, 59 flow [2022-12-13 10:00:12,401 INFO L130 PetriNetUnfolder]: 8/25 cut-off events. [2022-12-13 10:00:12,401 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 10:00:12,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 25 events. 8/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 30. Up to 10 conditions per place. [2022-12-13 10:00:12,402 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 15 transitions, 59 flow [2022-12-13 10:00:12,402 INFO L226 LiptonReduction]: Number of co-enabled transitions 36 [2022-12-13 10:00:12,403 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:00:12,404 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 10 [2022-12-13 10:00:12,404 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 59 flow [2022-12-13 10:00:12,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) 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) [2022-12-13 10:00:12,404 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:00:12,404 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:00:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 10:00:12,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 10:00:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:00:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1209496712, now seen corresponding path program 2 times [2022-12-13 10:00:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:00:12,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101503729] [2022-12-13 10:00:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:00:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:00:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:00:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:12,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:00:12,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101503729] [2022-12-13 10:00:12,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101503729] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:00:12,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181774588] [2022-12-13 10:00:12,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 10:00:12,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:00:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 10:00:12,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:00:12,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 10:00:12,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 10:00:12,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 10:00:12,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 10:00:12,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:00:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:12,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 10:00:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:12,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181774588] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 10:00:12,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 10:00:12,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 10:00:12,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125088010] [2022-12-13 10:00:12,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 10:00:12,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:00:12,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:00:12,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:00:12,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:00:12,791 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-13 10:00:12,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 59 flow. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-12-13 10:00:12,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:00:12,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-13 10:00:12,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:00:12,877 INFO L130 PetriNetUnfolder]: 34/63 cut-off events. [2022-12-13 10:00:12,878 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-13 10:00:12,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 63 events. 34/63 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 4 based on Foata normal form. 6/69 useless extension candidates. Maximal degree in co-relation 49. Up to 39 conditions per place. [2022-12-13 10:00:12,878 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 22 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2022-12-13 10:00:12,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 152 flow [2022-12-13 10:00:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:00:12,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 10:00:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-12-13 10:00:12,881 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2022-12-13 10:00:12,881 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 59 flow. Second operand 5 states and 30 transitions. [2022-12-13 10:00:12,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 152 flow [2022-12-13 10:00:12,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 144 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 10:00:12,883 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 88 flow [2022-12-13 10:00:12,883 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2022-12-13 10:00:12,884 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2022-12-13 10:00:12,884 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:00:12,884 INFO L89 Accepts]: Start accepts. Operand has 23 places, 18 transitions, 88 flow [2022-12-13 10:00:12,886 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:00:12,886 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:00:12,886 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 18 transitions, 88 flow [2022-12-13 10:00:12,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 88 flow [2022-12-13 10:00:12,891 INFO L130 PetriNetUnfolder]: 6/23 cut-off events. [2022-12-13 10:00:12,892 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-12-13 10:00:12,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 23 events. 6/23 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 1 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 41. Up to 8 conditions per place. [2022-12-13 10:00:12,895 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 18 transitions, 88 flow [2022-12-13 10:00:12,895 INFO L226 LiptonReduction]: Number of co-enabled transitions 46 [2022-12-13 10:00:12,895 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:00:12,898 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 14 [2022-12-13 10:00:12,898 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 88 flow [2022-12-13 10:00:12,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-12-13 10:00:12,899 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:00:12,899 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:00:12,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-13 10:00:13,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:00:13,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 10:00:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:00:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1163420716, now seen corresponding path program 1 times [2022-12-13 10:00:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:00:13,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721225937] [2022-12-13 10:00:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:00:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:00:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:00:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:13,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:00:13,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721225937] [2022-12-13 10:00:13,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721225937] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:00:13,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865039254] [2022-12-13 10:00:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:00:13,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:00:13,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 10:00:13,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:00:13,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 10:00:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:00:13,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 10:00:13,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:00:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:13,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 10:00:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:13,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865039254] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 10:00:13,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 10:00:13,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 10:00:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901296316] [2022-12-13 10:00:13,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 10:00:13,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:00:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:00:13,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:00:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:00:13,377 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-13 10:00:13,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-12-13 10:00:13,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:00:13,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-13 10:00:13,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:00:13,459 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2022-12-13 10:00:13,459 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-12-13 10:00:13,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 73 events. 40/73 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 139 event pairs, 4 based on Foata normal form. 4/77 useless extension candidates. Maximal degree in co-relation 113. Up to 61 conditions per place. [2022-12-13 10:00:13,463 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 21 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2022-12-13 10:00:13,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 175 flow [2022-12-13 10:00:13,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:00:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 10:00:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2022-12-13 10:00:13,465 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-13 10:00:13,465 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 88 flow. Second operand 5 states and 26 transitions. [2022-12-13 10:00:13,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 175 flow [2022-12-13 10:00:13,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 168 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 10:00:13,468 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 122 flow [2022-12-13 10:00:13,468 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2022-12-13 10:00:13,469 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 10 predicate places. [2022-12-13 10:00:13,469 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:00:13,469 INFO L89 Accepts]: Start accepts. Operand has 28 places, 21 transitions, 122 flow [2022-12-13 10:00:13,471 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:00:13,471 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:00:13,471 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 21 transitions, 122 flow [2022-12-13 10:00:13,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 122 flow [2022-12-13 10:00:13,476 INFO L130 PetriNetUnfolder]: 9/26 cut-off events. [2022-12-13 10:00:13,476 INFO L131 PetriNetUnfolder]: For 31/33 co-relation queries the response was YES. [2022-12-13 10:00:13,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 26 events. 9/26 cut-off events. For 31/33 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 69. Up to 11 conditions per place. [2022-12-13 10:00:13,477 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 21 transitions, 122 flow [2022-12-13 10:00:13,477 INFO L226 LiptonReduction]: Number of co-enabled transitions 52 [2022-12-13 10:00:13,483 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [250] L46-1-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork0_#res.base_Out_2| 0) (= |v_thread2Thread1of1ForFork0_#res.offset_Out_2| 0) (not (< (mod v_~x2~0_In_1 4294967296) (mod v_~n~0_In_1 4294967296)))) InVars {~n~0=v_~n~0_In_1, ~x2~0=v_~x2~0_In_1} OutVars{thread2Thread1of1ForFork0_#res.offset=|v_thread2Thread1of1ForFork0_#res.offset_Out_2|, ~x2~0=v_~x2~0_In_1, ~n~0=v_~n~0_In_1, thread2Thread1of1ForFork0_#res.base=|v_thread2Thread1of1ForFork0_#res.base_Out_2|} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_#res.offset, thread2Thread1of1ForFork0_#res.base] and [246] L38-1-->L38-1: Formula: (and (< (mod v_~x1~0_52 4294967296) (mod v_~n~0_47 4294967296)) (= v_~x1~0_51 (* v_~x1~0_52 2))) InVars {~n~0=v_~n~0_47, ~x1~0=v_~x1~0_52} OutVars{~n~0=v_~n~0_47, ~x1~0=v_~x1~0_51} AuxVars[] AssignedVars[~x1~0] [2022-12-13 10:00:13,530 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 10:00:13,537 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 68 [2022-12-13 10:00:13,537 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 120 flow [2022-12-13 10:00:13,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-12-13 10:00:13,537 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:00:13,537 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:00:13,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 10:00:13,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-13 10:00:13,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 10:00:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:00:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1846571948, now seen corresponding path program 1 times [2022-12-13 10:00:13,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:00:13,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272719964] [2022-12-13 10:00:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:00:13,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:00:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:00:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:14,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:00:14,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272719964] [2022-12-13 10:00:14,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272719964] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:00:14,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587220204] [2022-12-13 10:00:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:00:14,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:00:14,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 10:00:14,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:00:14,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 10:00:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:00:14,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 10:00:14,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:00:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 10:00:14,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 10:00:14,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587220204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:00:14,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 10:00:14,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-13 10:00:14,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803761913] [2022-12-13 10:00:14,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:00:14,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:00:14,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:00:14,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:00:14,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:00:14,183 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-13 10:00:14,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-12-13 10:00:14,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:00:14,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-13 10:00:14,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:00:14,208 INFO L130 PetriNetUnfolder]: 23/44 cut-off events. [2022-12-13 10:00:14,208 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 10:00:14,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 44 events. 23/44 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 4/48 useless extension candidates. Maximal degree in co-relation 98. Up to 40 conditions per place. [2022-12-13 10:00:14,209 INFO L137 encePairwiseOnDemand]: 11/14 looper letters, 15 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2022-12-13 10:00:14,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 17 transitions, 129 flow [2022-12-13 10:00:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:00:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:00:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 17 transitions. [2022-12-13 10:00:14,211 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2022-12-13 10:00:14,211 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 120 flow. Second operand 3 states and 17 transitions. [2022-12-13 10:00:14,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 17 transitions, 129 flow [2022-12-13 10:00:14,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 103 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-12-13 10:00:14,214 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 71 flow [2022-12-13 10:00:14,214 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2022-12-13 10:00:14,215 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2022-12-13 10:00:14,216 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:00:14,216 INFO L89 Accepts]: Start accepts. Operand has 22 places, 16 transitions, 71 flow [2022-12-13 10:00:14,216 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:00:14,216 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:00:14,216 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 16 transitions, 71 flow [2022-12-13 10:00:14,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 16 transitions, 71 flow [2022-12-13 10:00:14,219 INFO L130 PetriNetUnfolder]: 6/22 cut-off events. [2022-12-13 10:00:14,220 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 10:00:14,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 22 events. 6/22 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 36. Up to 8 conditions per place. [2022-12-13 10:00:14,220 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 16 transitions, 71 flow [2022-12-13 10:00:14,220 INFO L226 LiptonReduction]: Number of co-enabled transitions 26 [2022-12-13 10:00:14,221 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:00:14,222 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 6 [2022-12-13 10:00:14,222 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 71 flow [2022-12-13 10:00:14,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-12-13 10:00:14,222 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:00:14,223 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:00:14,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 10:00:14,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:00:14,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 10:00:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:00:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1077533263, now seen corresponding path program 1 times [2022-12-13 10:00:14,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:00:14,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177860249] [2022-12-13 10:00:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:00:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:00:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:00:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:14,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:00:14,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177860249] [2022-12-13 10:00:14,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177860249] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:00:14,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402570615] [2022-12-13 10:00:14,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:00:14,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:00:14,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 10:00:14,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:00:14,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 10:00:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:00:15,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 10:00:15,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:00:15,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:00:15,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 10:00:15,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402570615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:00:15,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 10:00:15,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 10:00:15,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45744526] [2022-12-13 10:00:15,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:00:15,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:00:15,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:00:15,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:00:15,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:00:15,434 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 14 [2022-12-13 10:00:15,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 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) [2022-12-13 10:00:15,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:00:15,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 14 [2022-12-13 10:00:15,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:00:15,442 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 10:00:15,442 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 10:00:15,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 5 events. 0/5 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 2/7 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2022-12-13 10:00:15,442 INFO L137 encePairwiseOnDemand]: 12/14 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2022-12-13 10:00:15,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 5 transitions, 28 flow [2022-12-13 10:00:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:00:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:00:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-12-13 10:00:15,444 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.14285714285714285 [2022-12-13 10:00:15,444 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 71 flow. Second operand 3 states and 6 transitions. [2022-12-13 10:00:15,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 5 transitions, 28 flow [2022-12-13 10:00:15,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 5 transitions, 24 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 10:00:15,444 INFO L231 Difference]: Finished difference. Result has 13 places, 0 transitions, 0 flow [2022-12-13 10:00:15,444 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=13, PETRI_TRANSITIONS=0} [2022-12-13 10:00:15,446 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, -5 predicate places. [2022-12-13 10:00:15,446 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:00:15,446 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 0 transitions, 0 flow [2022-12-13 10:00:15,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2022-12-13 10:00:15,447 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 10:00:15,447 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:00:15,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2022-12-13 10:00:15,447 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2022-12-13 10:00:15,447 INFO L226 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-13 10:00:15,447 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:00:15,448 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2 [2022-12-13 10:00:15,448 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-13 10:00:15,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 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) [2022-12-13 10:00:15,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 10:00:15,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 10:00:15,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 10:00:15,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 10:00:15,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:00:15,659 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-12-13 10:00:15,661 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 10:00:15,662 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 10:00:15,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:00:15 BasicIcfg [2022-12-13 10:00:15,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 10:00:15,664 INFO L158 Benchmark]: Toolchain (without parser) took 6622.20ms. Allocated memory was 189.8MB in the beginning and 228.6MB in the end (delta: 38.8MB). Free memory was 156.8MB in the beginning and 131.0MB in the end (delta: 25.8MB). Peak memory consumption was 66.2MB. Max. memory is 8.0GB. [2022-12-13 10:00:15,664 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory was 167.6MB in the beginning and 167.5MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 10:00:15,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.03ms. Allocated memory is still 189.8MB. Free memory was 156.2MB in the beginning and 145.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-13 10:00:15,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.08ms. Allocated memory is still 189.8MB. Free memory was 145.8MB in the beginning and 144.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 10:00:15,665 INFO L158 Benchmark]: Boogie Preprocessor took 15.60ms. Allocated memory is still 189.8MB. Free memory was 144.2MB in the beginning and 143.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 10:00:15,665 INFO L158 Benchmark]: RCFGBuilder took 297.42ms. Allocated memory is still 189.8MB. Free memory was 143.1MB in the beginning and 131.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-13 10:00:15,665 INFO L158 Benchmark]: TraceAbstraction took 6098.18ms. Allocated memory was 189.8MB in the beginning and 228.6MB in the end (delta: 38.8MB). Free memory was 129.5MB in the beginning and 131.0MB in the end (delta: -1.5MB). Peak memory consumption was 38.9MB. Max. memory is 8.0GB. [2022-12-13 10:00:15,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory was 167.6MB in the beginning and 167.5MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 184.03ms. Allocated memory is still 189.8MB. Free memory was 156.2MB in the beginning and 145.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.08ms. Allocated memory is still 189.8MB. Free memory was 145.8MB in the beginning and 144.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.60ms. Allocated memory is still 189.8MB. Free memory was 144.2MB in the beginning and 143.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 297.42ms. Allocated memory is still 189.8MB. Free memory was 143.1MB in the beginning and 131.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 6098.18ms. Allocated memory was 189.8MB in the beginning and 228.6MB in the end (delta: 38.8MB). Free memory was 129.5MB in the beginning and 131.0MB in the end (delta: -1.5MB). Peak memory consumption was 38.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 65 PlacesBefore, 18 PlacesAfterwards, 64 TransitionsBefore, 13 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 34 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 51 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 128, independent: 128, independent conditional: 128, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 128, independent: 128, independent conditional: 0, independent unconditional: 128, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 128, independent: 128, independent conditional: 0, independent unconditional: 128, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 128, independent: 128, independent conditional: 0, independent unconditional: 128, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 128, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 128, unknown conditional: 128, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 134, Positive cache size: 134, Positive conditional cache size: 134, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 17 PlacesBefore, 17 PlacesAfterwards, 15 TransitionsBefore, 15 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 19 PlacesBefore, 19 PlacesAfterwards, 15 TransitionsBefore, 15 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 23 PlacesBefore, 23 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 28 PlacesBefore, 27 PlacesAfterwards, 21 TransitionsBefore, 20 TransitionsAfterwards, 52 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, independent: 1, independent conditional: 1, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, independent: 1, independent conditional: 1, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, independent: 1, independent conditional: 1, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 1, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 22 PlacesBefore, 22 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 26 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 1, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 0 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 1, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 70]: 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 5 procedures, 81 locations, 3 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: 6.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 231 IncrementalHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 231 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=4, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 2467 SizeOfPredicates, 10 NumberOfNonLiveVariables, 430 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 4/13 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! [2022-12-13 10:00:15,682 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...