./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:49:21,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:49:21,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:49:21,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:49:21,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:49:21,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:49:21,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:49:21,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:49:21,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:49:21,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:49:21,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:49:21,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:49:21,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:49:21,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:49:21,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:49:21,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:49:21,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:49:21,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:49:21,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:49:21,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:49:21,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:49:21,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:49:21,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:49:21,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:49:21,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:49:21,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:49:21,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:49:21,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:49:21,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:49:21,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:49:21,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:49:21,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:49:21,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:49:21,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:49:21,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:49:21,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:49:21,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:49:21,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:49:21,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:49:21,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:49:21,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:49:21,635 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:49:21,673 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:49:21,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:49:21,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:49:21,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:49:21,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:49:21,676 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:49:21,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:49:21,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:49:21,677 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:49:21,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:49:21,678 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:49:21,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:49:21,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:49:21,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:49:21,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:49:21,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:49:21,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:49:21,679 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:49:21,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:49:21,680 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:49:21,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:49:21,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:49:21,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:49:21,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:49:21,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:49:21,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:49:21,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:49:21,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:49:21,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:49:21,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:49:21,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:49:21,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:49:21,682 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:49:21,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:49:21,683 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:49:21,683 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:49:22,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:49:22,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:49:22,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:49:22,046 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:49:22,047 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:49:22,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2023-08-31 01:49:23,122 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:49:23,341 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:49:23,342 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2023-08-31 01:49:23,348 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55172daaf/686861fd66694fcab66ec9b2e83e65a6/FLAGa9b9c647c [2023-08-31 01:49:23,362 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55172daaf/686861fd66694fcab66ec9b2e83e65a6 [2023-08-31 01:49:23,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:49:23,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:49:23,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:49:23,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:49:23,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:49:23,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d561317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23, skipping insertion in model container [2023-08-31 01:49:23,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:49:23,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:49:23,557 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2023-08-31 01:49:23,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:49:23,575 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:49:23,604 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2023-08-31 01:49:23,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:49:23,616 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:49:23,617 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:49:23,622 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:49:23,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23 WrapperNode [2023-08-31 01:49:23,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:49:23,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:49:23,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:49:23,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:49:23,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,654 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 155 [2023-08-31 01:49:23,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:49:23,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:49:23,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:49:23,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:49:23,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,685 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:49:23,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:49:23,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:49:23,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:49:23,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (1/1) ... [2023-08-31 01:49:23,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:49:23,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:49:23,717 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) [2023-08-31 01:49:23,733 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 [2023-08-31 01:49:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:49:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:49:23,757 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:49:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:49:23,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:49:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:49:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:49:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:49:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 01:49:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 01:49:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:49:23,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:49:23,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:49:23,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:49:23,762 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:49:23,864 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:49:23,865 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:49:24,141 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:49:24,200 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:49:24,200 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 01:49:24,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:49:24 BoogieIcfgContainer [2023-08-31 01:49:24,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:49:24,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:49:24,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:49:24,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:49:24,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:49:23" (1/3) ... [2023-08-31 01:49:24,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e27a9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:49:24, skipping insertion in model container [2023-08-31 01:49:24,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:23" (2/3) ... [2023-08-31 01:49:24,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e27a9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:49:24, skipping insertion in model container [2023-08-31 01:49:24,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:49:24" (3/3) ... [2023-08-31 01:49:24,215 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2023-08-31 01:49:24,221 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:49:24,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:49:24,236 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:49:24,237 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:49:24,325 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 01:49:24,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 232 flow [2023-08-31 01:49:24,444 INFO L130 PetriNetUnfolder]: 2/106 cut-off events. [2023-08-31 01:49:24,445 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:49:24,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 2/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-31 01:49:24,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 108 transitions, 232 flow [2023-08-31 01:49:24,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 98 transitions, 208 flow [2023-08-31 01:49:24,456 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:49:24,471 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 98 transitions, 208 flow [2023-08-31 01:49:24,474 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 98 transitions, 208 flow [2023-08-31 01:49:24,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 208 flow [2023-08-31 01:49:24,511 INFO L130 PetriNetUnfolder]: 2/98 cut-off events. [2023-08-31 01:49:24,511 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:49:24,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 2/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-31 01:49:24,514 INFO L119 LiptonReduction]: Number of co-enabled transitions 572 [2023-08-31 01:49:27,260 INFO L134 LiptonReduction]: Checked pairs total: 4021 [2023-08-31 01:49:27,261 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-31 01:49:27,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:49:27,277 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@438327d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:49:27,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 01:49:27,283 INFO L130 PetriNetUnfolder]: 0/26 cut-off events. [2023-08-31 01:49:27,283 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:49:27,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:27,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:27,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:49:27,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:27,289 INFO L85 PathProgramCache]: Analyzing trace with hash -64474640, now seen corresponding path program 1 times [2023-08-31 01:49:27,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:27,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764584040] [2023-08-31 01:49:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:27,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:27,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764584040] [2023-08-31 01:49:27,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764584040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:27,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:27,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:49:27,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786475681] [2023-08-31 01:49:27,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:27,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:27,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:27,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:28,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2023-08-31 01:49:28,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2023-08-31 01:49:28,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:28,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2023-08-31 01:49:28,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:28,247 INFO L130 PetriNetUnfolder]: 172/364 cut-off events. [2023-08-31 01:49:28,248 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-31 01:49:28,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 364 events. 172/364 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1509 event pairs, 57 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 616. Up to 98 conditions per place. [2023-08-31 01:49:28,253 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 44 selfloop transitions, 7 changer transitions 17/74 dead transitions. [2023-08-31 01:49:28,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 74 transitions, 323 flow [2023-08-31 01:49:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:49:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:49:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 749 transitions. [2023-08-31 01:49:28,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033602150537635 [2023-08-31 01:49:28,270 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 749 transitions. [2023-08-31 01:49:28,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 749 transitions. [2023-08-31 01:49:28,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:28,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 749 transitions. [2023-08-31 01:49:28,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.625) internal successors, (749), 8 states have internal predecessors, (749), 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) [2023-08-31 01:49:28,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 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) [2023-08-31 01:49:28,293 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 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) [2023-08-31 01:49:28,294 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 66 flow. Second operand 8 states and 749 transitions. [2023-08-31 01:49:28,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 74 transitions, 323 flow [2023-08-31 01:49:28,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 74 transitions, 297 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:49:28,299 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 96 flow [2023-08-31 01:49:28,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-08-31 01:49:28,303 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-31 01:49:28,303 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 96 flow [2023-08-31 01:49:28,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2023-08-31 01:49:28,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:28,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:28,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:49:28,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:49:28,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash -449195868, now seen corresponding path program 2 times [2023-08-31 01:49:28,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:28,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124789291] [2023-08-31 01:49:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:28,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124789291] [2023-08-31 01:49:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124789291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:28,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:28,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:49:28,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712437167] [2023-08-31 01:49:28,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:28,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:49:28,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:28,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:49:28,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:49:28,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2023-08-31 01:49:28,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 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) [2023-08-31 01:49:28,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:28,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2023-08-31 01:49:28,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:28,774 INFO L130 PetriNetUnfolder]: 183/462 cut-off events. [2023-08-31 01:49:28,775 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-31 01:49:28,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 462 events. 183/462 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2382 event pairs, 49 based on Foata normal form. 6/454 useless extension candidates. Maximal degree in co-relation 930. Up to 210 conditions per place. [2023-08-31 01:49:28,778 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 27 selfloop transitions, 5 changer transitions 18/63 dead transitions. [2023-08-31 01:49:28,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 63 transitions, 260 flow [2023-08-31 01:49:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:49:28,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:49:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 573 transitions. [2023-08-31 01:49:28,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134408602150538 [2023-08-31 01:49:28,787 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 573 transitions. [2023-08-31 01:49:28,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 573 transitions. [2023-08-31 01:49:28,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:28,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 573 transitions. [2023-08-31 01:49:28,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 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) [2023-08-31 01:49:28,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 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) [2023-08-31 01:49:28,793 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 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) [2023-08-31 01:49:28,793 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 96 flow. Second operand 6 states and 573 transitions. [2023-08-31 01:49:28,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 63 transitions, 260 flow [2023-08-31 01:49:28,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 63 transitions, 258 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 01:49:28,796 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 131 flow [2023-08-31 01:49:28,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-08-31 01:49:28,797 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-08-31 01:49:28,797 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 131 flow [2023-08-31 01:49:28,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 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) [2023-08-31 01:49:28,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:28,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:28,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:49:28,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:49:28,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2114433036, now seen corresponding path program 3 times [2023-08-31 01:49:28,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:28,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883518957] [2023-08-31 01:49:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:28,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:28,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:28,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883518957] [2023-08-31 01:49:28,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883518957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:28,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:28,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:49:28,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250879730] [2023-08-31 01:49:28,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:28,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:49:28,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:28,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:49:28,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:49:28,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 186 [2023-08-31 01:49:28,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2023-08-31 01:49:28,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:28,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 186 [2023-08-31 01:49:28,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:28,951 INFO L130 PetriNetUnfolder]: 132/348 cut-off events. [2023-08-31 01:49:28,951 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2023-08-31 01:49:28,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 348 events. 132/348 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1662 event pairs, 94 based on Foata normal form. 8/340 useless extension candidates. Maximal degree in co-relation 774. Up to 244 conditions per place. [2023-08-31 01:49:28,954 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 22 selfloop transitions, 2 changer transitions 2/39 dead transitions. [2023-08-31 01:49:28,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 197 flow [2023-08-31 01:49:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:49:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:49:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-31 01:49:28,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304659498207885 [2023-08-31 01:49:28,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-31 01:49:28,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-31 01:49:28,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:28,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-31 01:49:28,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2023-08-31 01:49:28,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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) [2023-08-31 01:49:28,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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) [2023-08-31 01:49:28,960 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 131 flow. Second operand 3 states and 296 transitions. [2023-08-31 01:49:28,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 197 flow [2023-08-31 01:49:28,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 192 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:28,963 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 134 flow [2023-08-31 01:49:28,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-08-31 01:49:28,964 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-08-31 01:49:28,964 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 134 flow [2023-08-31 01:49:28,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2023-08-31 01:49:28,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:28,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:28,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:49:28,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:49:28,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash 779493050, now seen corresponding path program 4 times [2023-08-31 01:49:28,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:28,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691938702] [2023-08-31 01:49:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:28,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:29,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:29,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:29,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691938702] [2023-08-31 01:49:29,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691938702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:29,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:29,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:49:29,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920704754] [2023-08-31 01:49:29,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:29,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:49:29,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:29,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:49:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:49:29,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 186 [2023-08-31 01:49:29,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 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) [2023-08-31 01:49:29,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:29,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 186 [2023-08-31 01:49:29,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:29,381 INFO L130 PetriNetUnfolder]: 90/276 cut-off events. [2023-08-31 01:49:29,382 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2023-08-31 01:49:29,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 276 events. 90/276 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1210 event pairs, 39 based on Foata normal form. 6/273 useless extension candidates. Maximal degree in co-relation 333. Up to 148 conditions per place. [2023-08-31 01:49:29,384 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 17 selfloop transitions, 2 changer transitions 12/45 dead transitions. [2023-08-31 01:49:29,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 221 flow [2023-08-31 01:49:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:49:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:49:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2023-08-31 01:49:29,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075268817204301 [2023-08-31 01:49:29,390 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2023-08-31 01:49:29,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2023-08-31 01:49:29,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:29,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2023-08-31 01:49:29,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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) [2023-08-31 01:49:29,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 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) [2023-08-31 01:49:29,395 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 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) [2023-08-31 01:49:29,395 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 134 flow. Second operand 5 states and 472 transitions. [2023-08-31 01:49:29,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 221 flow [2023-08-31 01:49:29,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 217 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:29,399 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 120 flow [2023-08-31 01:49:29,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-08-31 01:49:29,400 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-31 01:49:29,400 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 120 flow [2023-08-31 01:49:29,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 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) [2023-08-31 01:49:29,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:29,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:29,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:49:29,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:49:29,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:29,402 INFO L85 PathProgramCache]: Analyzing trace with hash -859219026, now seen corresponding path program 5 times [2023-08-31 01:49:29,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:29,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291760157] [2023-08-31 01:49:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:29,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:29,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:29,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291760157] [2023-08-31 01:49:29,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291760157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:29,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:29,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:49:29,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170167282] [2023-08-31 01:49:29,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:29,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:49:29,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:29,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:49:29,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:49:29,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 186 [2023-08-31 01:49:29,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2023-08-31 01:49:29,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:29,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 186 [2023-08-31 01:49:29,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:29,558 INFO L130 PetriNetUnfolder]: 86/238 cut-off events. [2023-08-31 01:49:29,559 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2023-08-31 01:49:29,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 238 events. 86/238 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 918 event pairs, 61 based on Foata normal form. 4/231 useless extension candidates. Maximal degree in co-relation 414. Up to 149 conditions per place. [2023-08-31 01:49:29,560 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 23 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-31 01:49:29,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 191 flow [2023-08-31 01:49:29,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:49:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:49:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2023-08-31 01:49:29,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53584229390681 [2023-08-31 01:49:29,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2023-08-31 01:49:29,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2023-08-31 01:49:29,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:29,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2023-08-31 01:49:29,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2023-08-31 01:49:29,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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) [2023-08-31 01:49:29,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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) [2023-08-31 01:49:29,566 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 120 flow. Second operand 3 states and 299 transitions. [2023-08-31 01:49:29,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 191 flow [2023-08-31 01:49:29,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 172 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-31 01:49:29,569 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 114 flow [2023-08-31 01:49:29,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-31 01:49:29,572 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-31 01:49:29,572 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 114 flow [2023-08-31 01:49:29,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2023-08-31 01:49:29,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:29,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:29,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:49:29,573 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:49:29,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:29,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2048255894, now seen corresponding path program 6 times [2023-08-31 01:49:29,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:29,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271458100] [2023-08-31 01:49:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:29,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:29,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:29,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271458100] [2023-08-31 01:49:29,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271458100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:29,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:29,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:49:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54884872] [2023-08-31 01:49:29,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:29,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:29,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:29,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2023-08-31 01:49:29,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2023-08-31 01:49:29,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:29,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2023-08-31 01:49:29,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:30,003 INFO L130 PetriNetUnfolder]: 126/275 cut-off events. [2023-08-31 01:49:30,004 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2023-08-31 01:49:30,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 275 events. 126/275 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1008 event pairs, 33 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 487. Up to 72 conditions per place. [2023-08-31 01:49:30,005 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 30 selfloop transitions, 6 changer transitions 21/63 dead transitions. [2023-08-31 01:49:30,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 319 flow [2023-08-31 01:49:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:49:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:49:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 737 transitions. [2023-08-31 01:49:30,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4952956989247312 [2023-08-31 01:49:30,009 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 737 transitions. [2023-08-31 01:49:30,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 737 transitions. [2023-08-31 01:49:30,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:30,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 737 transitions. [2023-08-31 01:49:30,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.125) internal successors, (737), 8 states have internal predecessors, (737), 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) [2023-08-31 01:49:30,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 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) [2023-08-31 01:49:30,014 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 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) [2023-08-31 01:49:30,015 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 114 flow. Second operand 8 states and 737 transitions. [2023-08-31 01:49:30,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 319 flow [2023-08-31 01:49:30,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:30,017 INFO L231 Difference]: Finished difference. Result has 49 places, 29 transitions, 111 flow [2023-08-31 01:49:30,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=111, PETRI_PLACES=49, PETRI_TRANSITIONS=29} [2023-08-31 01:49:30,018 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2023-08-31 01:49:30,018 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 29 transitions, 111 flow [2023-08-31 01:49:30,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2023-08-31 01:49:30,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:30,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:30,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 01:49:30,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:49:30,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash 745665856, now seen corresponding path program 7 times [2023-08-31 01:49:30,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:30,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652188656] [2023-08-31 01:49:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:30,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:30,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:30,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652188656] [2023-08-31 01:49:30,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652188656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:30,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:30,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:49:30,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719855234] [2023-08-31 01:49:30,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:30,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:49:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:49:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:49:30,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2023-08-31 01:49:30,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 29 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 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) [2023-08-31 01:49:30,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:30,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2023-08-31 01:49:30,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:30,286 INFO L130 PetriNetUnfolder]: 59/177 cut-off events. [2023-08-31 01:49:30,286 INFO L131 PetriNetUnfolder]: For 56/58 co-relation queries the response was YES. [2023-08-31 01:49:30,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 177 events. 59/177 cut-off events. For 56/58 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 613 event pairs, 26 based on Foata normal form. 8/183 useless extension candidates. Maximal degree in co-relation 428. Up to 65 conditions per place. [2023-08-31 01:49:30,287 INFO L137 encePairwiseOnDemand]: 179/186 looper letters, 20 selfloop transitions, 4 changer transitions 9/43 dead transitions. [2023-08-31 01:49:30,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 220 flow [2023-08-31 01:49:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:49:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:49:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2023-08-31 01:49:30,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49910394265232977 [2023-08-31 01:49:30,290 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2023-08-31 01:49:30,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2023-08-31 01:49:30,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:30,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2023-08-31 01:49:30,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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) [2023-08-31 01:49:30,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 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) [2023-08-31 01:49:30,294 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 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) [2023-08-31 01:49:30,294 INFO L175 Difference]: Start difference. First operand has 49 places, 29 transitions, 111 flow. Second operand 6 states and 557 transitions. [2023-08-31 01:49:30,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 220 flow [2023-08-31 01:49:30,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 189 flow, removed 7 selfloop flow, removed 10 redundant places. [2023-08-31 01:49:30,296 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 102 flow [2023-08-31 01:49:30,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-08-31 01:49:30,297 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-08-31 01:49:30,297 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 102 flow [2023-08-31 01:49:30,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 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) [2023-08-31 01:49:30,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:30,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:30,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 01:49:30,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:49:30,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1161390480, now seen corresponding path program 8 times [2023-08-31 01:49:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:30,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295308906] [2023-08-31 01:49:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:30,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:30,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295308906] [2023-08-31 01:49:30,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295308906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:30,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:30,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:49:30,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537957086] [2023-08-31 01:49:30,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:30,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:49:30,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:49:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:49:30,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 186 [2023-08-31 01:49:30,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 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) [2023-08-31 01:49:30,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:30,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 186 [2023-08-31 01:49:30,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:30,543 INFO L130 PetriNetUnfolder]: 17/65 cut-off events. [2023-08-31 01:49:30,543 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-31 01:49:30,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 65 events. 17/65 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 7 based on Foata normal form. 6/69 useless extension candidates. Maximal degree in co-relation 151. Up to 22 conditions per place. [2023-08-31 01:49:30,544 INFO L137 encePairwiseOnDemand]: 182/186 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-31 01:49:30,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 22 transitions, 106 flow [2023-08-31 01:49:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:49:30,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:49:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2023-08-31 01:49:30,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2023-08-31 01:49:30,546 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2023-08-31 01:49:30,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2023-08-31 01:49:30,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:30,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2023-08-31 01:49:30,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 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) [2023-08-31 01:49:30,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 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) [2023-08-31 01:49:30,550 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 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) [2023-08-31 01:49:30,550 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 102 flow. Second operand 5 states and 456 transitions. [2023-08-31 01:49:30,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 22 transitions, 106 flow [2023-08-31 01:49:30,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 94 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-31 01:49:30,551 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-08-31 01:49:30,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-08-31 01:49:30,552 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-08-31 01:49:30,552 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-08-31 01:49:30,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 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) [2023-08-31 01:49:30,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-31 01:49:30,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 01:49:30,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 01:49:30,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 01:49:30,556 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2023-08-31 01:49:30,558 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 01:49:30,558 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 01:49:30,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 01:49:30 BasicIcfg [2023-08-31 01:49:30,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 01:49:30,565 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 01:49:30,565 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 01:49:30,565 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 01:49:30,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:49:24" (3/4) ... [2023-08-31 01:49:30,567 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 01:49:30,572 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-31 01:49:30,572 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-31 01:49:30,575 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-31 01:49:30,575 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 01:49:30,576 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 01:49:30,576 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 01:49:30,602 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 01:49:30,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 01:49:30,603 INFO L158 Benchmark]: Toolchain (without parser) took 7237.78ms. Allocated memory was 69.2MB in the beginning and 146.8MB in the end (delta: 77.6MB). Free memory was 46.2MB in the beginning and 120.3MB in the end (delta: -74.1MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-08-31 01:49:30,603 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 34.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 01:49:30,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.23ms. Allocated memory is still 69.2MB. Free memory was 46.0MB in the beginning and 34.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-31 01:49:30,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.38ms. Allocated memory is still 69.2MB. Free memory was 34.5MB in the beginning and 32.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:49:30,604 INFO L158 Benchmark]: Boogie Preprocessor took 32.14ms. Allocated memory is still 69.2MB. Free memory was 32.8MB in the beginning and 49.1MB in the end (delta: -16.3MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-08-31 01:49:30,604 INFO L158 Benchmark]: RCFGBuilder took 513.32ms. Allocated memory is still 69.2MB. Free memory was 49.1MB in the beginning and 30.8MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-31 01:49:30,605 INFO L158 Benchmark]: TraceAbstraction took 6360.90ms. Allocated memory was 69.2MB in the beginning and 146.8MB in the end (delta: 77.6MB). Free memory was 29.9MB in the beginning and 122.4MB in the end (delta: -92.4MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2023-08-31 01:49:30,605 INFO L158 Benchmark]: Witness Printer took 38.01ms. Allocated memory is still 146.8MB. Free memory was 122.4MB in the beginning and 120.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:49:30,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 34.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.23ms. Allocated memory is still 69.2MB. Free memory was 46.0MB in the beginning and 34.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.38ms. Allocated memory is still 69.2MB. Free memory was 34.5MB in the beginning and 32.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.14ms. Allocated memory is still 69.2MB. Free memory was 32.8MB in the beginning and 49.1MB in the end (delta: -16.3MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 513.32ms. Allocated memory is still 69.2MB. Free memory was 49.1MB in the beginning and 30.8MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6360.90ms. Allocated memory was 69.2MB in the beginning and 146.8MB in the end (delta: 77.6MB). Free memory was 29.9MB in the beginning and 122.4MB in the end (delta: -92.4MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. * Witness Printer took 38.01ms. Allocated memory is still 146.8MB. Free memory was 122.4MB in the beginning and 120.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 103 PlacesBefore, 34 PlacesAfterwards, 98 TransitionsBefore, 27 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 78 TotalNumberOfCompositions, 4021 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2201, independent: 1933, independent conditional: 0, independent unconditional: 1933, dependent: 268, dependent conditional: 0, dependent unconditional: 268, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 286, independent: 270, independent conditional: 0, independent unconditional: 270, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2201, independent: 1663, independent conditional: 0, independent unconditional: 1663, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 286, unknown conditional: 0, unknown unconditional: 286] , Statistics on independence cache: Total cache size (in pairs): 109, Positive cache size: 95, Positive conditional cache size: 0, Positive unconditional cache size: 95, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 130]: 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, 133 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: 6.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 264 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 208 mSDsluCounter, 98 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 73 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1065 IncrementalHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 25 mSDtfsCounter, 1065 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=3, InterpolantAutomatonStates: 44, 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, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 1078 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 01:49:30,623 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE