./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/pthread/triangular-longest-1.i -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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:02:59,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:02:59,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:02:59,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:02:59,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:02:59,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:02:59,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:02:59,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:02:59,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:02:59,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:02:59,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:02:59,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:02:59,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:02:59,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:02:59,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:02:59,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:02:59,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:02:59,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:02:59,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:02:59,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:02:59,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:02:59,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:02:59,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:02:59,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:02:59,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:02:59,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:02:59,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:02:59,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:02:59,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:02:59,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:02:59,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:02:59,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:02:59,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:02:59,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:02:59,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:02:59,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:02:59,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:02:59,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:02:59,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:02:59,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:02:59,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:02:59,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:02:59,840 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:02:59,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:02:59,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:02:59,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:02:59,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:02:59,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:02:59,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:02:59,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:02:59,843 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:02:59,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:02:59,843 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:02:59,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:02:59,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:02:59,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:02:59,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:02:59,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:02:59,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:02:59,844 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:02:59,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:02:59,845 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:02:59,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:02:59,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:02:59,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:02:59,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:02:59,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:02:59,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:02:59,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:02:59,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:02:59,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:02:59,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:02:59,846 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:02:59,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:02:59,847 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:02:59,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:02:59,847 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:02:59,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:03:00,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:03:00,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:03:00,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:03:00,105 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:03:00,105 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:03:00,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-09-01 09:03:01,060 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:03:01,284 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:03:01,284 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-09-01 09:03:01,293 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31baf4bfc/7b4afca07a6041b6a52ea0f7c76eefc6/FLAG7d8f5c42c [2023-09-01 09:03:01,304 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31baf4bfc/7b4afca07a6041b6a52ea0f7c76eefc6 [2023-09-01 09:03:01,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:03:01,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:03:01,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:03:01,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:03:01,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:03:01,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a60955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01, skipping insertion in model container [2023-09-01 09:03:01,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:03:01,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:03:01,605 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2023-09-01 09:03:01,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:03:01,614 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:03:01,650 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2023-09-01 09:03:01,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:03:01,681 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:03:01,681 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:03:01,685 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:03:01,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01 WrapperNode [2023-09-01 09:03:01,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:03:01,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:03:01,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:03:01,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:03:01,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,723 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-09-01 09:03:01,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:03:01,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:03:01,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:03:01,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:03:01,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:03:01,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:03:01,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:03:01,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:03:01,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (1/1) ... [2023-09-01 09:03:01,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:03:01,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:01,759 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) [2023-09-01 09:03:01,780 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 [2023-09-01 09:03:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 09:03:01,788 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 09:03:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 09:03:01,788 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 09:03:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:03:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:03:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:03:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:03:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:03:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:03:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:03:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:03:01,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:03:01,790 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:03:01,885 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:03:01,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:03:02,023 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:03:02,027 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:03:02,027 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 09:03:02,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:03:02 BoogieIcfgContainer [2023-09-01 09:03:02,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:03:02,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:03:02,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:03:02,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:03:02,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:03:01" (1/3) ... [2023-09-01 09:03:02,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c06ac7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:03:02, skipping insertion in model container [2023-09-01 09:03:02,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:01" (2/3) ... [2023-09-01 09:03:02,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c06ac7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:03:02, skipping insertion in model container [2023-09-01 09:03:02,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:03:02" (3/3) ... [2023-09-01 09:03:02,034 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2023-09-01 09:03:02,039 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:03:02,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:03:02,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:03:02,045 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:03:02,094 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:03:02,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2023-09-01 09:03:02,139 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-09-01 09:03:02,141 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:03:02,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-09-01 09:03:02,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2023-09-01 09:03:02,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2023-09-01 09:03:02,153 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:03:02,161 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 134 flow [2023-09-01 09:03:02,166 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 134 flow [2023-09-01 09:03:02,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 134 flow [2023-09-01 09:03:02,194 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-09-01 09:03:02,197 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:03:02,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-09-01 09:03:02,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 1078 [2023-09-01 09:03:03,754 INFO L134 LiptonReduction]: Checked pairs total: 999 [2023-09-01 09:03:03,754 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-09-01 09:03:03,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:03:03,767 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;@7c71c096, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:03:03,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 09:03:03,770 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2023-09-01 09:03:03,770 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:03:03,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:03,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 09:03:03,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:03,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:03,774 INFO L85 PathProgramCache]: Analyzing trace with hash -776471266, now seen corresponding path program 1 times [2023-09-01 09:03:03,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:03,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652834462] [2023-09-01 09:03:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:03,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:04,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:04,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652834462] [2023-09-01 09:03:04,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652834462] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:04,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:04,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:03:04,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90370773] [2023-09-01 09:03:04,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:04,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:03:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:04,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:03:04,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:03:04,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 124 [2023-09-01 09:03:04,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-09-01 09:03:04,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:04,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 124 [2023-09-01 09:03:04,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:04,210 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2023-09-01 09:03:04,211 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:03:04,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-09-01 09:03:04,214 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-09-01 09:03:04,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-09-01 09:03:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:03:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:03:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2023-09-01 09:03:04,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939516129032258 [2023-09-01 09:03:04,228 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 245 transitions. [2023-09-01 09:03:04,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 245 transitions. [2023-09-01 09:03:04,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:04,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 245 transitions. [2023-09-01 09:03:04,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2023-09-01 09:03:04,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2023-09-01 09:03:04,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2023-09-01 09:03:04,240 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 245 transitions. [2023-09-01 09:03:04,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-09-01 09:03:04,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:03:04,243 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-09-01 09:03:04,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-09-01 09:03:04,247 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-09-01 09:03:04,247 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-09-01 09:03:04,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-09-01 09:03:04,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:04,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:04,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:03:04,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:04,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1135033148, now seen corresponding path program 1 times [2023-09-01 09:03:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:04,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131636891] [2023-09-01 09:03:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:04,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:04,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131636891] [2023-09-01 09:03:04,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131636891] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:04,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:04,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:03:04,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805811777] [2023-09-01 09:03:04,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:04,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:03:04,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:03:04,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:03:04,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:04,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-09-01 09:03:04,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:04,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:04,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:04,495 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2023-09-01 09:03:04,495 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-09-01 09:03:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 654 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-09-01 09:03:04,497 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-09-01 09:03:04,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-09-01 09:03:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:03:04,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:03:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2023-09-01 09:03:04,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2023-09-01 09:03:04,499 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2023-09-01 09:03:04,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2023-09-01 09:03:04,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:04,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2023-09-01 09:03:04,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 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) [2023-09-01 09:03:04,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-09-01 09:03:04,502 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-09-01 09:03:04,502 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 356 transitions. [2023-09-01 09:03:04,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-09-01 09:03:04,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:03:04,504 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-09-01 09:03:04,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-09-01 09:03:04,505 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-09-01 09:03:04,505 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-09-01 09:03:04,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-09-01 09:03:04,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:04,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:04,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:03:04,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:04,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:04,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1135047098, now seen corresponding path program 2 times [2023-09-01 09:03:04,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:04,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455391187] [2023-09-01 09:03:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455391187] [2023-09-01 09:03:04,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455391187] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:04,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:04,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:03:04,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350536261] [2023-09-01 09:03:04,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:04,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:03:04,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:04,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:03:04,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:03:04,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:04,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-09-01 09:03:04,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:04,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:04,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:04,703 INFO L130 PetriNetUnfolder]: 126/219 cut-off events. [2023-09-01 09:03:04,704 INFO L131 PetriNetUnfolder]: For 298/298 co-relation queries the response was YES. [2023-09-01 09:03:04,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 219 events. 126/219 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 683 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 704. Up to 87 conditions per place. [2023-09-01 09:03:04,707 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 29 selfloop transitions, 15 changer transitions 8/52 dead transitions. [2023-09-01 09:03:04,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 348 flow [2023-09-01 09:03:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:03:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:03:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2023-09-01 09:03:04,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2023-09-01 09:03:04,708 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2023-09-01 09:03:04,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2023-09-01 09:03:04,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:04,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2023-09-01 09:03:04,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2023-09-01 09:03:04,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-09-01 09:03:04,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-09-01 09:03:04,712 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 7 states and 413 transitions. [2023-09-01 09:03:04,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 348 flow [2023-09-01 09:03:04,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 344 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-09-01 09:03:04,715 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 240 flow [2023-09-01 09:03:04,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-09-01 09:03:04,716 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 21 predicate places. [2023-09-01 09:03:04,718 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 240 flow [2023-09-01 09:03:04,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-09-01 09:03:04,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:04,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:04,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:03:04,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:04,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:04,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1601722647, now seen corresponding path program 1 times [2023-09-01 09:03:04,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:04,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902864196] [2023-09-01 09:03:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:04,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:04,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:04,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902864196] [2023-09-01 09:03:04,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902864196] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:04,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:04,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:04,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678108359] [2023-09-01 09:03:04,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:04,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:03:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:03:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:03:04,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:04,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:04,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:04,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:04,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:04,921 INFO L130 PetriNetUnfolder]: 162/283 cut-off events. [2023-09-01 09:03:04,921 INFO L131 PetriNetUnfolder]: For 777/777 co-relation queries the response was YES. [2023-09-01 09:03:04,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 283 events. 162/283 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 940 event pairs, 20 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1058. Up to 71 conditions per place. [2023-09-01 09:03:04,923 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 37 selfloop transitions, 21 changer transitions 3/61 dead transitions. [2023-09-01 09:03:04,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 488 flow [2023-09-01 09:03:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:03:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:03:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-09-01 09:03:04,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737903225806452 [2023-09-01 09:03:04,925 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-09-01 09:03:04,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-09-01 09:03:04,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:04,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-09-01 09:03:04,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 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) [2023-09-01 09:03:04,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 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) [2023-09-01 09:03:04,928 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 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) [2023-09-01 09:03:04,928 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 240 flow. Second operand 8 states and 470 transitions. [2023-09-01 09:03:04,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 488 flow [2023-09-01 09:03:04,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 467 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-09-01 09:03:04,931 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 346 flow [2023-09-01 09:03:04,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-09-01 09:03:04,932 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 31 predicate places. [2023-09-01 09:03:04,932 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 346 flow [2023-09-01 09:03:04,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:04,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:04,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:04,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:03:04,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:04,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:04,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1572215607, now seen corresponding path program 2 times [2023-09-01 09:03:04,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:04,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829392569] [2023-09-01 09:03:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:04,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:04,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829392569] [2023-09-01 09:03:04,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829392569] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:04,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:04,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:04,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476615837] [2023-09-01 09:03:04,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:04,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:03:04,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:04,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:03:04,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:03:05,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:05,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:05,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:05,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:05,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:05,088 INFO L130 PetriNetUnfolder]: 154/271 cut-off events. [2023-09-01 09:03:05,088 INFO L131 PetriNetUnfolder]: For 1323/1323 co-relation queries the response was YES. [2023-09-01 09:03:05,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 271 events. 154/271 cut-off events. For 1323/1323 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 926 event pairs, 22 based on Foata normal form. 8/279 useless extension candidates. Maximal degree in co-relation 1179. Up to 67 conditions per place. [2023-09-01 09:03:05,090 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 30 selfloop transitions, 21 changer transitions 8/59 dead transitions. [2023-09-01 09:03:05,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 576 flow [2023-09-01 09:03:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:03:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:03:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 411 transitions. [2023-09-01 09:03:05,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735023041474654 [2023-09-01 09:03:05,092 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 411 transitions. [2023-09-01 09:03:05,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 411 transitions. [2023-09-01 09:03:05,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:05,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 411 transitions. [2023-09-01 09:03:05,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 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) [2023-09-01 09:03:05,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-09-01 09:03:05,094 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-09-01 09:03:05,094 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 346 flow. Second operand 7 states and 411 transitions. [2023-09-01 09:03:05,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 576 flow [2023-09-01 09:03:05,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 537 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-09-01 09:03:05,098 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 398 flow [2023-09-01 09:03:05,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-09-01 09:03:05,099 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 35 predicate places. [2023-09-01 09:03:05,099 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 398 flow [2023-09-01 09:03:05,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:05,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:05,099 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:05,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:03:05,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:05,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1494024432, now seen corresponding path program 3 times [2023-09-01 09:03:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:05,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015502849] [2023-09-01 09:03:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:05,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:05,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:05,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015502849] [2023-09-01 09:03:05,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015502849] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:05,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155167114] [2023-09-01 09:03:05,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 09:03:05,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:05,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:05,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:05,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 09:03:05,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 09:03:05,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:05,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 09:03:05,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:05,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:05,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155167114] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:05,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:05,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-09-01 09:03:05,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368847090] [2023-09-01 09:03:05,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:05,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 09:03:05,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:05,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 09:03:05,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-09-01 09:03:05,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:05,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 398 flow. Second operand has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 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) [2023-09-01 09:03:05,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:05,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:05,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:05,697 INFO L130 PetriNetUnfolder]: 202/351 cut-off events. [2023-09-01 09:03:05,698 INFO L131 PetriNetUnfolder]: For 2187/2187 co-relation queries the response was YES. [2023-09-01 09:03:05,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 351 events. 202/351 cut-off events. For 2187/2187 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1213 event pairs, 10 based on Foata normal form. 16/367 useless extension candidates. Maximal degree in co-relation 1647. Up to 87 conditions per place. [2023-09-01 09:03:05,699 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 36 selfloop transitions, 38 changer transitions 26/100 dead transitions. [2023-09-01 09:03:05,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 992 flow [2023-09-01 09:03:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 09:03:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 09:03:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 935 transitions. [2023-09-01 09:03:05,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47127016129032256 [2023-09-01 09:03:05,702 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 935 transitions. [2023-09-01 09:03:05,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 935 transitions. [2023-09-01 09:03:05,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:05,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 935 transitions. [2023-09-01 09:03:05,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.4375) internal successors, (935), 16 states have internal predecessors, (935), 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) [2023-09-01 09:03:05,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2023-09-01 09:03:05,706 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2023-09-01 09:03:05,706 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 398 flow. Second operand 16 states and 935 transitions. [2023-09-01 09:03:05,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 992 flow [2023-09-01 09:03:05,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 927 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-09-01 09:03:05,711 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 705 flow [2023-09-01 09:03:05,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=705, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-09-01 09:03:05,712 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 49 predicate places. [2023-09-01 09:03:05,712 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 705 flow [2023-09-01 09:03:05,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 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) [2023-09-01 09:03:05,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:05,713 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:05,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:05,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-09-01 09:03:05,918 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:05,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:05,918 INFO L85 PathProgramCache]: Analyzing trace with hash 976616748, now seen corresponding path program 4 times [2023-09-01 09:03:05,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143498459] [2023-09-01 09:03:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:05,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:06,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143498459] [2023-09-01 09:03:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143498459] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416813342] [2023-09-01 09:03:06,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 09:03:06,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:06,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:06,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 09:03:06,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 09:03:06,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:06,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 09:03:06,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:06,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:06,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416813342] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:06,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:06,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-09-01 09:03:06,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779090418] [2023-09-01 09:03:06,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:06,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 09:03:06,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:06,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 09:03:06,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-09-01 09:03:06,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:06,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 705 flow. Second operand has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 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) [2023-09-01 09:03:06,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:06,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:06,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:06,586 INFO L130 PetriNetUnfolder]: 258/463 cut-off events. [2023-09-01 09:03:06,586 INFO L131 PetriNetUnfolder]: For 4314/4314 co-relation queries the response was YES. [2023-09-01 09:03:06,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 463 events. 258/463 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1636 event pairs, 55 based on Foata normal form. 32/495 useless extension candidates. Maximal degree in co-relation 2419. Up to 237 conditions per place. [2023-09-01 09:03:06,589 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 64 selfloop transitions, 27 changer transitions 27/118 dead transitions. [2023-09-01 09:03:06,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 1473 flow [2023-09-01 09:03:06,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 09:03:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 09:03:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 931 transitions. [2023-09-01 09:03:06,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692540322580645 [2023-09-01 09:03:06,592 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 931 transitions. [2023-09-01 09:03:06,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 931 transitions. [2023-09-01 09:03:06,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:06,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 931 transitions. [2023-09-01 09:03:06,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.1875) internal successors, (931), 16 states have internal predecessors, (931), 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) [2023-09-01 09:03:06,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2023-09-01 09:03:06,596 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2023-09-01 09:03:06,596 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 705 flow. Second operand 16 states and 931 transitions. [2023-09-01 09:03:06,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 1473 flow [2023-09-01 09:03:06,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 1098 flow, removed 170 selfloop flow, removed 7 redundant places. [2023-09-01 09:03:06,606 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 769 flow [2023-09-01 09:03:06,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=769, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2023-09-01 09:03:06,607 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 67 predicate places. [2023-09-01 09:03:06,607 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 769 flow [2023-09-01 09:03:06,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 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) [2023-09-01 09:03:06,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:06,608 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:06,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:06,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-09-01 09:03:06,813 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:06,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:06,813 INFO L85 PathProgramCache]: Analyzing trace with hash 921314670, now seen corresponding path program 5 times [2023-09-01 09:03:06,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:06,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685941297] [2023-09-01 09:03:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:06,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:06,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:06,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685941297] [2023-09-01 09:03:06,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685941297] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:06,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891662662] [2023-09-01 09:03:06,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 09:03:06,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:06,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:06,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:06,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 09:03:06,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 09:03:06,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:06,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 09:03:06,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:06,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:07,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891662662] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:07,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:07,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-09-01 09:03:07,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679513846] [2023-09-01 09:03:07,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:07,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 09:03:07,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 09:03:07,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-09-01 09:03:07,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:07,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 769 flow. Second operand has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 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) [2023-09-01 09:03:07,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:07,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:07,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:07,525 INFO L130 PetriNetUnfolder]: 412/755 cut-off events. [2023-09-01 09:03:07,525 INFO L131 PetriNetUnfolder]: For 12085/12085 co-relation queries the response was YES. [2023-09-01 09:03:07,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 755 events. 412/755 cut-off events. For 12085/12085 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3336 event pairs, 44 based on Foata normal form. 32/787 useless extension candidates. Maximal degree in co-relation 3958. Up to 227 conditions per place. [2023-09-01 09:03:07,530 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 73 selfloop transitions, 72 changer transitions 37/182 dead transitions. [2023-09-01 09:03:07,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 182 transitions, 2087 flow [2023-09-01 09:03:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 09:03:07,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 09:03:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1280 transitions. [2023-09-01 09:03:07,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46920821114369504 [2023-09-01 09:03:07,534 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1280 transitions. [2023-09-01 09:03:07,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1280 transitions. [2023-09-01 09:03:07,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:07,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1280 transitions. [2023-09-01 09:03:07,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.18181818181818) internal successors, (1280), 22 states have internal predecessors, (1280), 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) [2023-09-01 09:03:07,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2023-09-01 09:03:07,542 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2023-09-01 09:03:07,542 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 769 flow. Second operand 22 states and 1280 transitions. [2023-09-01 09:03:07,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 182 transitions, 2087 flow [2023-09-01 09:03:07,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 182 transitions, 1966 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-09-01 09:03:07,583 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 1476 flow [2023-09-01 09:03:07,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1476, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2023-09-01 09:03:07,584 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 98 predicate places. [2023-09-01 09:03:07,584 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 1476 flow [2023-09-01 09:03:07,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 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) [2023-09-01 09:03:07,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:07,585 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:07,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:07,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:07,792 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:07,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1348517036, now seen corresponding path program 6 times [2023-09-01 09:03:07,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:07,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099820427] [2023-09-01 09:03:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:07,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:07,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:07,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099820427] [2023-09-01 09:03:07,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099820427] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:07,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789422882] [2023-09-01 09:03:07,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 09:03:07,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:07,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:07,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:07,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 09:03:07,976 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-09-01 09:03:07,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:07,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 09:03:07,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:08,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:08,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789422882] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:08,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:08,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-09-01 09:03:08,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400778336] [2023-09-01 09:03:08,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:08,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 09:03:08,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:08,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 09:03:08,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-09-01 09:03:08,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:08,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 1476 flow. Second operand has 17 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 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) [2023-09-01 09:03:08,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:08,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:08,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:08,733 INFO L130 PetriNetUnfolder]: 576/1035 cut-off events. [2023-09-01 09:03:08,733 INFO L131 PetriNetUnfolder]: For 32514/32514 co-relation queries the response was YES. [2023-09-01 09:03:08,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7154 conditions, 1035 events. 576/1035 cut-off events. For 32514/32514 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4819 event pairs, 20 based on Foata normal form. 32/1067 useless extension candidates. Maximal degree in co-relation 7098. Up to 327 conditions per place. [2023-09-01 09:03:08,739 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 61 selfloop transitions, 128 changer transitions 48/237 dead transitions. [2023-09-01 09:03:08,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 237 transitions, 3592 flow [2023-09-01 09:03:08,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-09-01 09:03:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-09-01 09:03:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1571 transitions. [2023-09-01 09:03:08,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692353643966547 [2023-09-01 09:03:08,743 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1571 transitions. [2023-09-01 09:03:08,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1571 transitions. [2023-09-01 09:03:08,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:08,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1571 transitions. [2023-09-01 09:03:08,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 58.18518518518518) internal successors, (1571), 27 states have internal predecessors, (1571), 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) [2023-09-01 09:03:08,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 124.0) internal successors, (3472), 28 states have internal predecessors, (3472), 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) [2023-09-01 09:03:08,749 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 124.0) internal successors, (3472), 28 states have internal predecessors, (3472), 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) [2023-09-01 09:03:08,749 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 1476 flow. Second operand 27 states and 1571 transitions. [2023-09-01 09:03:08,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 237 transitions, 3592 flow [2023-09-01 09:03:08,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 237 transitions, 3297 flow, removed 139 selfloop flow, removed 4 redundant places. [2023-09-01 09:03:08,791 INFO L231 Difference]: Finished difference. Result has 153 places, 150 transitions, 2479 flow [2023-09-01 09:03:08,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2479, PETRI_PLACES=153, PETRI_TRANSITIONS=150} [2023-09-01 09:03:08,792 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 135 predicate places. [2023-09-01 09:03:08,792 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 150 transitions, 2479 flow [2023-09-01 09:03:08,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 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) [2023-09-01 09:03:08,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:08,793 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:08,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:08,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:08,998 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:08,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1293813567, now seen corresponding path program 7 times [2023-09-01 09:03:08,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:08,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505183092] [2023-09-01 09:03:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:08,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:09,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:09,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505183092] [2023-09-01 09:03:09,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505183092] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:09,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866841624] [2023-09-01 09:03:09,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 09:03:09,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:09,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:09,181 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:09,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 09:03:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:09,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 09:03:09,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:09,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:09,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866841624] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:09,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:09,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-09-01 09:03:09,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662637718] [2023-09-01 09:03:09,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:09,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 09:03:09,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:09,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 09:03:09,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2023-09-01 09:03:09,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:09,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 150 transitions, 2479 flow. Second operand has 25 states, 25 states have (on average 54.44) internal successors, (1361), 25 states have internal predecessors, (1361), 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) [2023-09-01 09:03:09,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:09,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:09,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:10,377 INFO L130 PetriNetUnfolder]: 808/1435 cut-off events. [2023-09-01 09:03:10,377 INFO L131 PetriNetUnfolder]: For 78546/78546 co-relation queries the response was YES. [2023-09-01 09:03:10,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12997 conditions, 1435 events. 808/1435 cut-off events. For 78546/78546 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6536 event pairs, 26 based on Foata normal form. 40/1475 useless extension candidates. Maximal degree in co-relation 12926. Up to 482 conditions per place. [2023-09-01 09:03:10,393 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 69 selfloop transitions, 183 changer transitions 70/322 dead transitions. [2023-09-01 09:03:10,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 322 transitions, 6716 flow [2023-09-01 09:03:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-09-01 09:03:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-09-01 09:03:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2202 transitions. [2023-09-01 09:03:10,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673174872665535 [2023-09-01 09:03:10,401 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2202 transitions. [2023-09-01 09:03:10,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2202 transitions. [2023-09-01 09:03:10,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:10,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2202 transitions. [2023-09-01 09:03:10,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 57.94736842105263) internal successors, (2202), 38 states have internal predecessors, (2202), 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) [2023-09-01 09:03:10,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 124.0) internal successors, (4836), 39 states have internal predecessors, (4836), 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) [2023-09-01 09:03:10,418 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 124.0) internal successors, (4836), 39 states have internal predecessors, (4836), 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) [2023-09-01 09:03:10,418 INFO L175 Difference]: Start difference. First operand has 153 places, 150 transitions, 2479 flow. Second operand 38 states and 2202 transitions. [2023-09-01 09:03:10,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 322 transitions, 6716 flow [2023-09-01 09:03:10,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 322 transitions, 5215 flow, removed 725 selfloop flow, removed 10 redundant places. [2023-09-01 09:03:10,558 INFO L231 Difference]: Finished difference. Result has 200 places, 211 transitions, 3680 flow [2023-09-01 09:03:10,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3680, PETRI_PLACES=200, PETRI_TRANSITIONS=211} [2023-09-01 09:03:10,559 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 182 predicate places. [2023-09-01 09:03:10,559 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 211 transitions, 3680 flow [2023-09-01 09:03:10,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 54.44) internal successors, (1361), 25 states have internal predecessors, (1361), 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) [2023-09-01 09:03:10,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:10,560 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:10,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:10,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 09:03:10,766 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:10,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash 349678668, now seen corresponding path program 8 times [2023-09-01 09:03:10,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:10,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268439313] [2023-09-01 09:03:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:10,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:11,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:11,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268439313] [2023-09-01 09:03:11,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268439313] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:11,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944251196] [2023-09-01 09:03:11,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 09:03:11,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:11,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:11,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:11,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 09:03:11,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 09:03:11,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:11,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 09:03:11,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:11,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:11,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944251196] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:11,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:11,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-09-01 09:03:11,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111724491] [2023-09-01 09:03:11,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:11,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-09-01 09:03:11,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-09-01 09:03:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2023-09-01 09:03:11,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:11,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 211 transitions, 3680 flow. Second operand has 40 states, 40 states have (on average 54.3) internal successors, (2172), 40 states have internal predecessors, (2172), 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) [2023-09-01 09:03:11,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:11,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:11,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:12,641 INFO L130 PetriNetUnfolder]: 928/1675 cut-off events. [2023-09-01 09:03:12,641 INFO L131 PetriNetUnfolder]: For 135869/135869 co-relation queries the response was YES. [2023-09-01 09:03:12,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17193 conditions, 1675 events. 928/1675 cut-off events. For 135869/135869 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7463 event pairs, 271 based on Foata normal form. 80/1755 useless extension candidates. Maximal degree in co-relation 17103. Up to 1177 conditions per place. [2023-09-01 09:03:12,657 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 226 selfloop transitions, 61 changer transitions 75/362 dead transitions. [2023-09-01 09:03:12,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 362 transitions, 8202 flow [2023-09-01 09:03:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-09-01 09:03:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-09-01 09:03:12,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2311 transitions. [2023-09-01 09:03:12,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659274193548387 [2023-09-01 09:03:12,660 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2311 transitions. [2023-09-01 09:03:12,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2311 transitions. [2023-09-01 09:03:12,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:12,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2311 transitions. [2023-09-01 09:03:12,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 57.775) internal successors, (2311), 40 states have internal predecessors, (2311), 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) [2023-09-01 09:03:12,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 124.0) internal successors, (5084), 41 states have internal predecessors, (5084), 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) [2023-09-01 09:03:12,685 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 124.0) internal successors, (5084), 41 states have internal predecessors, (5084), 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) [2023-09-01 09:03:12,685 INFO L175 Difference]: Start difference. First operand has 200 places, 211 transitions, 3680 flow. Second operand 40 states and 2311 transitions. [2023-09-01 09:03:12,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 362 transitions, 8202 flow [2023-09-01 09:03:12,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 362 transitions, 6960 flow, removed 596 selfloop flow, removed 6 redundant places. [2023-09-01 09:03:12,872 INFO L231 Difference]: Finished difference. Result has 255 places, 241 transitions, 4403 flow [2023-09-01 09:03:12,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2910, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4403, PETRI_PLACES=255, PETRI_TRANSITIONS=241} [2023-09-01 09:03:12,873 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 237 predicate places. [2023-09-01 09:03:12,873 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 241 transitions, 4403 flow [2023-09-01 09:03:12,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 54.3) internal successors, (2172), 40 states have internal predecessors, (2172), 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) [2023-09-01 09:03:12,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:12,874 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:12,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 09:03:13,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:13,078 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:13,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1705541234, now seen corresponding path program 9 times [2023-09-01 09:03:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:13,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745363264] [2023-09-01 09:03:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:13,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:13,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:13,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745363264] [2023-09-01 09:03:13,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745363264] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:13,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886688187] [2023-09-01 09:03:13,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 09:03:13,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:13,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:13,390 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:13,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 09:03:13,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-09-01 09:03:13,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:13,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 09:03:13,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:13,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:13,943 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:13,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886688187] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:13,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:13,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2023-09-01 09:03:13,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375541721] [2023-09-01 09:03:13,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:13,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-09-01 09:03:13,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-09-01 09:03:13,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1274, Unknown=0, NotChecked=0, Total=1640 [2023-09-01 09:03:14,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:14,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 241 transitions, 4403 flow. Second operand has 41 states, 41 states have (on average 54.31707317073171) internal successors, (2227), 41 states have internal predecessors, (2227), 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) [2023-09-01 09:03:14,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:14,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:14,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:15,272 INFO L130 PetriNetUnfolder]: 1208/2235 cut-off events. [2023-09-01 09:03:15,273 INFO L131 PetriNetUnfolder]: For 351814/351814 co-relation queries the response was YES. [2023-09-01 09:03:15,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27010 conditions, 2235 events. 1208/2235 cut-off events. For 351814/351814 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10788 event pairs, 170 based on Foata normal form. 80/2315 useless extension candidates. Maximal degree in co-relation 26897. Up to 878 conditions per place. [2023-09-01 09:03:15,295 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 188 selfloop transitions, 185 changer transitions 87/460 dead transitions. [2023-09-01 09:03:15,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 460 transitions, 10588 flow [2023-09-01 09:03:15,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-09-01 09:03:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-09-01 09:03:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2660 transitions. [2023-09-01 09:03:15,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46633941093969145 [2023-09-01 09:03:15,299 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2660 transitions. [2023-09-01 09:03:15,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2660 transitions. [2023-09-01 09:03:15,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:15,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2660 transitions. [2023-09-01 09:03:15,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 57.82608695652174) internal successors, (2660), 46 states have internal predecessors, (2660), 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) [2023-09-01 09:03:15,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 124.0) internal successors, (5828), 47 states have internal predecessors, (5828), 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) [2023-09-01 09:03:15,308 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 124.0) internal successors, (5828), 47 states have internal predecessors, (5828), 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) [2023-09-01 09:03:15,308 INFO L175 Difference]: Start difference. First operand has 255 places, 241 transitions, 4403 flow. Second operand 46 states and 2660 transitions. [2023-09-01 09:03:15,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 460 transitions, 10588 flow [2023-09-01 09:03:15,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 460 transitions, 9469 flow, removed 532 selfloop flow, removed 14 redundant places. [2023-09-01 09:03:15,937 INFO L231 Difference]: Finished difference. Result has 306 places, 310 transitions, 6121 flow [2023-09-01 09:03:15,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6121, PETRI_PLACES=306, PETRI_TRANSITIONS=310} [2023-09-01 09:03:15,938 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 288 predicate places. [2023-09-01 09:03:15,938 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 310 transitions, 6121 flow [2023-09-01 09:03:15,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 54.31707317073171) internal successors, (2227), 41 states have internal predecessors, (2227), 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) [2023-09-01 09:03:15,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:15,939 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:15,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:16,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:16,139 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:16,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash 473632138, now seen corresponding path program 10 times [2023-09-01 09:03:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:16,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243539002] [2023-09-01 09:03:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:16,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243539002] [2023-09-01 09:03:16,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243539002] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863612484] [2023-09-01 09:03:16,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 09:03:16,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:16,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:16,378 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:16,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 09:03:16,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 09:03:16,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:16,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 09:03:16,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:16,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:16,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863612484] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:16,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:16,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-09-01 09:03:16,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005621068] [2023-09-01 09:03:16,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:16,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-09-01 09:03:16,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:16,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-09-01 09:03:16,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=1264, Unknown=0, NotChecked=0, Total=1560 [2023-09-01 09:03:16,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:16,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 310 transitions, 6121 flow. Second operand has 40 states, 40 states have (on average 54.3) internal successors, (2172), 40 states have internal predecessors, (2172), 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) [2023-09-01 09:03:16,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:16,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:16,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:18,551 INFO L130 PetriNetUnfolder]: 1680/3155 cut-off events. [2023-09-01 09:03:18,552 INFO L131 PetriNetUnfolder]: For 824616/824616 co-relation queries the response was YES. [2023-09-01 09:03:18,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46364 conditions, 3155 events. 1680/3155 cut-off events. For 824616/824616 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 17015 event pairs, 56 based on Foata normal form. 80/3235 useless extension candidates. Maximal degree in co-relation 46230. Up to 1318 conditions per place. [2023-09-01 09:03:18,589 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 120 selfloop transitions, 384 changer transitions 105/609 dead transitions. [2023-09-01 09:03:18,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 609 transitions, 16202 flow [2023-09-01 09:03:18,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-09-01 09:03:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-09-01 09:03:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 3181 transitions. [2023-09-01 09:03:18,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46642228739002933 [2023-09-01 09:03:18,608 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 3181 transitions. [2023-09-01 09:03:18,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 3181 transitions. [2023-09-01 09:03:18,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:18,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 3181 transitions. [2023-09-01 09:03:18,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 57.836363636363636) internal successors, (3181), 55 states have internal predecessors, (3181), 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) [2023-09-01 09:03:18,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 124.0) internal successors, (6944), 56 states have internal predecessors, (6944), 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) [2023-09-01 09:03:18,618 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 124.0) internal successors, (6944), 56 states have internal predecessors, (6944), 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) [2023-09-01 09:03:18,618 INFO L175 Difference]: Start difference. First operand has 306 places, 310 transitions, 6121 flow. Second operand 55 states and 3181 transitions. [2023-09-01 09:03:18,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 609 transitions, 16202 flow [2023-09-01 09:03:20,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 609 transitions, 14264 flow, removed 928 selfloop flow, removed 14 redundant places. [2023-09-01 09:03:20,320 INFO L231 Difference]: Finished difference. Result has 372 places, 433 transitions, 9593 flow [2023-09-01 09:03:20,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4609, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=9593, PETRI_PLACES=372, PETRI_TRANSITIONS=433} [2023-09-01 09:03:20,321 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 354 predicate places. [2023-09-01 09:03:20,321 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 433 transitions, 9593 flow [2023-09-01 09:03:20,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 54.3) internal successors, (2172), 40 states have internal predecessors, (2172), 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) [2023-09-01 09:03:20,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:20,322 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:20,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:20,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 09:03:20,527 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:20,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1615342368, now seen corresponding path program 11 times [2023-09-01 09:03:20,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:20,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241534966] [2023-09-01 09:03:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:20,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:20,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:20,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241534966] [2023-09-01 09:03:20,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241534966] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:20,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480295663] [2023-09-01 09:03:20,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 09:03:20,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:20,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:20,775 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:20,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 09:03:20,841 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-09-01 09:03:20,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:20,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 09:03:20,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:20,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 09:03:21,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480295663] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:21,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:21,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2023-09-01 09:03:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991864868] [2023-09-01 09:03:21,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:21,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-09-01 09:03:21,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-09-01 09:03:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1328, Unknown=0, NotChecked=0, Total=1640 [2023-09-01 09:03:21,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:21,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 433 transitions, 9593 flow. Second operand has 41 states, 41 states have (on average 54.31707317073171) internal successors, (2227), 41 states have internal predecessors, (2227), 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) [2023-09-01 09:03:21,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:21,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:21,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:23,844 INFO L130 PetriNetUnfolder]: 2144/3975 cut-off events. [2023-09-01 09:03:23,844 INFO L131 PetriNetUnfolder]: For 1634078/1634078 co-relation queries the response was YES. [2023-09-01 09:03:23,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71668 conditions, 3975 events. 2144/3975 cut-off events. For 1634078/1634078 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 22155 event pairs, 32 based on Foata normal form. 84/4059 useless extension candidates. Maximal degree in co-relation 71507. Up to 1674 conditions per place. [2023-09-01 09:03:23,902 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 112 selfloop transitions, 525 changer transitions 133/770 dead transitions. [2023-09-01 09:03:23,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 770 transitions, 24905 flow [2023-09-01 09:03:23,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-09-01 09:03:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-09-01 09:03:23,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 4052 transitions. [2023-09-01 09:03:23,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46682027649769586 [2023-09-01 09:03:23,907 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 4052 transitions. [2023-09-01 09:03:23,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 4052 transitions. [2023-09-01 09:03:23,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:23,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 4052 transitions. [2023-09-01 09:03:23,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 57.885714285714286) internal successors, (4052), 70 states have internal predecessors, (4052), 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) [2023-09-01 09:03:23,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 124.0) internal successors, (8804), 71 states have internal predecessors, (8804), 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) [2023-09-01 09:03:23,920 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 124.0) internal successors, (8804), 71 states have internal predecessors, (8804), 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) [2023-09-01 09:03:23,920 INFO L175 Difference]: Start difference. First operand has 372 places, 433 transitions, 9593 flow. Second operand 70 states and 4052 transitions. [2023-09-01 09:03:23,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 770 transitions, 24905 flow [2023-09-01 09:03:26,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 770 transitions, 19336 flow, removed 2687 selfloop flow, removed 19 redundant places. [2023-09-01 09:03:26,541 INFO L231 Difference]: Finished difference. Result has 458 places, 554 transitions, 12941 flow [2023-09-01 09:03:26,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6780, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=12941, PETRI_PLACES=458, PETRI_TRANSITIONS=554} [2023-09-01 09:03:26,542 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 440 predicate places. [2023-09-01 09:03:26,542 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 554 transitions, 12941 flow [2023-09-01 09:03:26,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 54.31707317073171) internal successors, (2227), 41 states have internal predecessors, (2227), 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) [2023-09-01 09:03:26,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:26,543 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:26,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:26,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 09:03:26,747 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:26,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:26,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2048673579, now seen corresponding path program 12 times [2023-09-01 09:03:26,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:26,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781334085] [2023-09-01 09:03:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:26,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:27,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:27,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781334085] [2023-09-01 09:03:27,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781334085] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:27,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051009981] [2023-09-01 09:03:27,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 09:03:27,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:27,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:27,122 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:27,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 09:03:27,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-09-01 09:03:27,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:27,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 09:03:27,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:27,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051009981] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:27,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:27,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2023-09-01 09:03:27,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352708511] [2023-09-01 09:03:27,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:27,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-09-01 09:03:27,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:27,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-09-01 09:03:27,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=1577, Unknown=0, NotChecked=0, Total=2070 [2023-09-01 09:03:27,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:27,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 554 transitions, 12941 flow. Second operand has 46 states, 46 states have (on average 54.26086956521739) internal successors, (2496), 46 states have internal predecessors, (2496), 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) [2023-09-01 09:03:27,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:27,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:27,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:31,281 INFO L130 PetriNetUnfolder]: 2588/4771 cut-off events. [2023-09-01 09:03:31,281 INFO L131 PetriNetUnfolder]: For 2182803/2182803 co-relation queries the response was YES. [2023-09-01 09:03:31,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97107 conditions, 4771 events. 2588/4771 cut-off events. For 2182803/2182803 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 26360 event pairs, 12 based on Foata normal form. 64/4835 useless extension candidates. Maximal degree in co-relation 96909. Up to 2002 conditions per place. [2023-09-01 09:03:31,416 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 124 selfloop transitions, 634 changer transitions 164/922 dead transitions. [2023-09-01 09:03:31,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 922 transitions, 34734 flow [2023-09-01 09:03:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-09-01 09:03:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-09-01 09:03:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 4914 transitions. [2023-09-01 09:03:31,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662239089184061 [2023-09-01 09:03:31,420 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 4914 transitions. [2023-09-01 09:03:31,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 4914 transitions. [2023-09-01 09:03:31,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:31,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 4914 transitions. [2023-09-01 09:03:31,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 57.811764705882354) internal successors, (4914), 85 states have internal predecessors, (4914), 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) [2023-09-01 09:03:31,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 124.0) internal successors, (10664), 86 states have internal predecessors, (10664), 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) [2023-09-01 09:03:31,434 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 124.0) internal successors, (10664), 86 states have internal predecessors, (10664), 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) [2023-09-01 09:03:31,434 INFO L175 Difference]: Start difference. First operand has 458 places, 554 transitions, 12941 flow. Second operand 85 states and 4914 transitions. [2023-09-01 09:03:31,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 922 transitions, 34734 flow [2023-09-01 09:03:36,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 922 transitions, 26791 flow, removed 3777 selfloop flow, removed 28 redundant places. [2023-09-01 09:03:36,413 INFO L231 Difference]: Finished difference. Result has 545 places, 665 transitions, 15758 flow [2023-09-01 09:03:36,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8970, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=15758, PETRI_PLACES=545, PETRI_TRANSITIONS=665} [2023-09-01 09:03:36,414 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 527 predicate places. [2023-09-01 09:03:36,414 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 665 transitions, 15758 flow [2023-09-01 09:03:36,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 54.26086956521739) internal successors, (2496), 46 states have internal predecessors, (2496), 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) [2023-09-01 09:03:36,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:36,414 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:36,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:36,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 09:03:36,617 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:36,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2091543568, now seen corresponding path program 13 times [2023-09-01 09:03:36,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:36,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793065681] [2023-09-01 09:03:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:37,344 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:37,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:37,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793065681] [2023-09-01 09:03:37,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793065681] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:37,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191394328] [2023-09-01 09:03:37,345 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 09:03:37,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:37,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:37,346 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:37,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 09:03:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:37,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2023-09-01 09:03:37,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:37,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:38,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191394328] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:38,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:38,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 85 [2023-09-01 09:03:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065633755] [2023-09-01 09:03:38,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:38,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-09-01 09:03:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-09-01 09:03:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1745, Invalid=5737, Unknown=0, NotChecked=0, Total=7482 [2023-09-01 09:03:38,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:38,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 665 transitions, 15758 flow. Second operand has 87 states, 87 states have (on average 54.12643678160919) internal successors, (4709), 87 states have internal predecessors, (4709), 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) [2023-09-01 09:03:38,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:38,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:38,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:43,144 INFO L130 PetriNetUnfolder]: 2848/5235 cut-off events. [2023-09-01 09:03:43,144 INFO L131 PetriNetUnfolder]: For 3313683/3313683 co-relation queries the response was YES. [2023-09-01 09:03:43,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118785 conditions, 5235 events. 2848/5235 cut-off events. For 3313683/3313683 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 29019 event pairs, 28 based on Foata normal form. 12/5247 useless extension candidates. Maximal degree in co-relation 118557. Up to 2182 conditions per place. [2023-09-01 09:03:43,226 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 137 selfloop transitions, 695 changer transitions 170/1002 dead transitions. [2023-09-01 09:03:43,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 1002 transitions, 36281 flow [2023-09-01 09:03:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-09-01 09:03:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-09-01 09:03:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5074 transitions. [2023-09-01 09:03:43,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46499266862170086 [2023-09-01 09:03:43,230 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5074 transitions. [2023-09-01 09:03:43,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5074 transitions. [2023-09-01 09:03:43,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:43,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5074 transitions. [2023-09-01 09:03:43,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 57.65909090909091) internal successors, (5074), 88 states have internal predecessors, (5074), 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) [2023-09-01 09:03:43,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 124.0) internal successors, (11036), 89 states have internal predecessors, (11036), 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) [2023-09-01 09:03:43,243 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 124.0) internal successors, (11036), 89 states have internal predecessors, (11036), 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) [2023-09-01 09:03:43,243 INFO L175 Difference]: Start difference. First operand has 545 places, 665 transitions, 15758 flow. Second operand 88 states and 5074 transitions. [2023-09-01 09:03:43,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 1002 transitions, 36281 flow [2023-09-01 09:03:51,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 1002 transitions, 28597 flow, removed 3704 selfloop flow, removed 20 redundant places. [2023-09-01 09:03:51,440 INFO L231 Difference]: Finished difference. Result has 620 places, 730 transitions, 14532 flow [2023-09-01 09:03:51,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11300, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=631, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=14532, PETRI_PLACES=620, PETRI_TRANSITIONS=730} [2023-09-01 09:03:51,441 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 602 predicate places. [2023-09-01 09:03:51,441 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 730 transitions, 14532 flow [2023-09-01 09:03:51,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 54.12643678160919) internal successors, (4709), 87 states have internal predecessors, (4709), 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) [2023-09-01 09:03:51,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:51,442 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:51,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:51,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 09:03:51,643 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:51,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:51,643 INFO L85 PathProgramCache]: Analyzing trace with hash 97653521, now seen corresponding path program 14 times [2023-09-01 09:03:51,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625703337] [2023-09-01 09:03:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 380 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:51,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:51,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625703337] [2023-09-01 09:03:51,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625703337] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:51,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358514492] [2023-09-01 09:03:51,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 09:03:51,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:51,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:51,972 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:51,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 09:03:52,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 09:03:52,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:52,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 09:03:52,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:52,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 09:03:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358514492] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:52,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 09:03:52,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-09-01 09:03:52,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245004439] [2023-09-01 09:03:52,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:52,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-09-01 09:03:52,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-09-01 09:03:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-09-01 09:03:52,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 124 [2023-09-01 09:03:52,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 730 transitions, 14532 flow. Second operand has 23 states, 23 states have (on average 58.130434782608695) internal successors, (1337), 23 states have internal predecessors, (1337), 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) [2023-09-01 09:03:52,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:52,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 124 [2023-09-01 09:03:52,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:04:10,438 INFO L130 PetriNetUnfolder]: 30156/45600 cut-off events. [2023-09-01 09:04:10,438 INFO L131 PetriNetUnfolder]: For 31142387/31142387 co-relation queries the response was YES. [2023-09-01 09:04:11,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977709 conditions, 45600 events. 30156/45600 cut-off events. For 31142387/31142387 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 294835 event pairs, 282 based on Foata normal form. 1157/46757 useless extension candidates. Maximal degree in co-relation 977472. Up to 18636 conditions per place. [2023-09-01 09:04:11,859 INFO L137 encePairwiseOnDemand]: 121/124 looper letters, 0 selfloop transitions, 0 changer transitions 8573/8573 dead transitions. [2023-09-01 09:04:11,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 8573 transitions, 178855 flow [2023-09-01 09:04:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 09:04:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 09:04:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1465 transitions. [2023-09-01 09:04:11,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136746143057503 [2023-09-01 09:04:11,861 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1465 transitions. [2023-09-01 09:04:11,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1465 transitions. [2023-09-01 09:04:11,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:04:11,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1465 transitions. [2023-09-01 09:04:11,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 63.69565217391305) internal successors, (1465), 23 states have internal predecessors, (1465), 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) [2023-09-01 09:04:11,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 124.0) internal successors, (2976), 24 states have internal predecessors, (2976), 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) [2023-09-01 09:04:11,865 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 124.0) internal successors, (2976), 24 states have internal predecessors, (2976), 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) [2023-09-01 09:04:11,865 INFO L175 Difference]: Start difference. First operand has 620 places, 730 transitions, 14532 flow. Second operand 23 states and 1465 transitions. [2023-09-01 09:04:11,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 8573 transitions, 178855 flow [2023-09-01 09:05:19,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 8573 transitions, 166535 flow, removed 656 selfloop flow, removed 55 redundant places. [2023-09-01 09:05:19,341 INFO L231 Difference]: Finished difference. Result has 586 places, 0 transitions, 0 flow [2023-09-01 09:05:19,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12384, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=586, PETRI_TRANSITIONS=0} [2023-09-01 09:05:19,342 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 568 predicate places. [2023-09-01 09:05:19,342 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 0 transitions, 0 flow [2023-09-01 09:05:19,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 58.130434782608695) internal successors, (1337), 23 states have internal predecessors, (1337), 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) [2023-09-01 09:05:19,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-09-01 09:05:19,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 09:05:19,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 09:05:19,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 09:05:19,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 09:05:19,548 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1] [2023-09-01 09:05:19,550 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:05:19,550 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:05:19,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:05:19 BasicIcfg [2023-09-01 09:05:19,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:05:19,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:05:19,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:05:19,552 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:05:19,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:03:02" (3/4) ... [2023-09-01 09:05:19,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:05:19,558 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-09-01 09:05:19,558 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-09-01 09:05:19,560 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 09:05:19,560 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 09:05:19,560 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:05:19,560 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:05:19,577 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:05:19,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:05:19,577 INFO L158 Benchmark]: Toolchain (without parser) took 138270.57ms. Allocated memory was 81.8MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 57.4MB in the beginning and 7.4GB in the end (delta: -7.3GB). Peak memory consumption was 4.0GB. Max. memory is 16.1GB. [2023-09-01 09:05:19,577 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:05:19,578 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.72ms. Allocated memory is still 81.8MB. Free memory was 57.2MB in the beginning and 56.2MB in the end (delta: 975.1kB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2023-09-01 09:05:19,578 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.15ms. Allocated memory is still 81.8MB. Free memory was 56.2MB in the beginning and 54.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:05:19,578 INFO L158 Benchmark]: Boogie Preprocessor took 14.53ms. Allocated memory is still 81.8MB. Free memory was 54.5MB in the beginning and 52.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:05:19,578 INFO L158 Benchmark]: RCFGBuilder took 289.83ms. Allocated memory is still 81.8MB. Free memory was 52.9MB in the beginning and 40.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 09:05:19,578 INFO L158 Benchmark]: TraceAbstraction took 137521.57ms. Allocated memory was 81.8MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 39.9MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB. [2023-09-01 09:05:19,579 INFO L158 Benchmark]: Witness Printer took 24.88ms. Allocated memory is still 11.4GB. Free memory was 7.4GB in the beginning and 7.4GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:05:19,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.72ms. Allocated memory is still 81.8MB. Free memory was 57.2MB in the beginning and 56.2MB in the end (delta: 975.1kB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.15ms. Allocated memory is still 81.8MB. Free memory was 56.2MB in the beginning and 54.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.53ms. Allocated memory is still 81.8MB. Free memory was 54.5MB in the beginning and 52.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 289.83ms. Allocated memory is still 81.8MB. Free memory was 52.9MB in the beginning and 40.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 137521.57ms. Allocated memory was 81.8MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 39.9MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB. * Witness Printer took 24.88ms. Allocated memory is still 11.4GB. Free memory was 7.4GB in the beginning and 7.4GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 66 PlacesBefore, 18 PlacesAfterwards, 64 TransitionsBefore, 14 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 856, independent: 829, independent conditional: 0, independent unconditional: 829, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 590, independent: 578, independent conditional: 0, independent unconditional: 578, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 856, independent: 251, independent conditional: 0, independent unconditional: 251, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 590, unknown conditional: 0, unknown unconditional: 590] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: 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, 84 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: 137.4s, OverallIterations: 17, TraceHistogramMax: 21, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 124.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7894 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7800 mSDsluCounter, 1102 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1079 mSDsCounter, 690 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6386 IncrementalHoareTripleChecker+Invalid, 7076 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 690 mSolverCounterUnsat, 23 mSDtfsCounter, 6386 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1228 GetRequests, 350 SyntacticMatches, 12 SemanticMatches, 866 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25454 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15758occurred in iteration=15, InterpolantAutomatonStates: 558, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 652 NumberOfCodeBlocks, 651 NumberOfCodeBlocksAsserted, 69 NumberOfCheckSat, 868 ConstructedInterpolants, 0 QuantifiedInterpolants, 3624 SizeOfPredicates, 161 NumberOfNonLiveVariables, 2360 ConjunctsInSsa, 250 ConjunctsInUnsatCore, 40 InterpolantComputations, 6 PerfectInterpolantSequences, 801/3398 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! [2023-09-01 09:05:19,603 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