./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c --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/weaver/bench-exp3x3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 --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 11:45:12,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:45:12,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:45:12,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:45:12,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:45:12,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:45:12,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:45:12,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:45:12,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:45:12,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:45:12,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:45:12,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:45:12,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:45:12,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:45:12,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:45:12,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:45:12,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:45:12,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:45:12,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:45:12,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:45:12,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:45:12,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:45:12,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:45:12,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:45:12,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:45:12,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:45:12,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:45:12,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:45:12,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:45:12,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:45:12,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:45:12,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:45:12,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:45:12,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:45:12,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:45:12,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:45:12,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:45:12,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:45:12,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:45:12,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:45:12,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:45:12,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:45:12,295 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:45:12,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:45:12,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:45:12,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:45:12,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:45:12,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:45:12,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:45:12,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:45:12,297 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:45:12,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:45:12,297 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:45:12,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:45:12,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:45:12,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:45:12,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:45:12,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:45:12,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:45:12,299 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:45:12,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:45:12,299 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:45:12,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:45:12,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:45:12,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:45:12,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:45:12,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:45:12,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:45:12,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:45:12,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:45:12,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:45:12,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:45:12,301 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:45:12,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:45:12,301 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:45:12,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:45:12,302 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:45:12,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:45:12,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:45:12,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:45:12,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:45:12,557 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:45:12,558 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:45:12,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-09-01 11:45:13,442 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:45:13,576 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:45:13,576 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-09-01 11:45:13,580 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40306243/9eeaa05195fb43baa9ea17413886be39/FLAGcbd398b57 [2023-09-01 11:45:13,589 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40306243/9eeaa05195fb43baa9ea17413886be39 [2023-09-01 11:45:13,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:45:13,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:45:13,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:45:13,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:45:13,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:45:13,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2481fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13, skipping insertion in model container [2023-09-01 11:45:13,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:45:13,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:45:13,711 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2625,2638] [2023-09-01 11:45:13,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:45:13,720 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:45:13,737 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2625,2638] [2023-09-01 11:45:13,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:45:13,755 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:45:13,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13 WrapperNode [2023-09-01 11:45:13,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:45:13,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:45:13,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:45:13,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:45:13,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,798 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2023-09-01 11:45:13,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:45:13,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:45:13,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:45:13,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:45:13,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,833 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:45:13,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:45:13,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:45:13,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:45:13,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (1/1) ... [2023-09-01 11:45:13,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:45:13,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:45:13,861 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 11:45:13,866 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 11:45:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:45:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 11:45:13,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 11:45:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 11:45:13,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 11:45:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 11:45:13,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 11:45:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 11:45:13,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 11:45:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:45:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-09-01 11:45:13,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-09-01 11:45:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-09-01 11:45:13,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-09-01 11:45:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:45:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:45:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:45:13,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:45:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:45:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:45:13,893 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 11:45:14,012 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:45:14,014 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:45:14,234 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:45:14,239 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:45:14,240 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 11:45:14,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:45:14 BoogieIcfgContainer [2023-09-01 11:45:14,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:45:14,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:45:14,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:45:14,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:45:14,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:45:13" (1/3) ... [2023-09-01 11:45:14,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf38457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:45:14, skipping insertion in model container [2023-09-01 11:45:14,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:45:13" (2/3) ... [2023-09-01 11:45:14,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf38457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:45:14, skipping insertion in model container [2023-09-01 11:45:14,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:45:14" (3/3) ... [2023-09-01 11:45:14,246 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2023-09-01 11:45:14,251 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:45:14,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:45:14,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 11:45:14,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:45:14,328 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 11:45:14,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2023-09-01 11:45:14,439 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2023-09-01 11:45:14,439 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:45:14,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-09-01 11:45:14,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2023-09-01 11:45:14,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 147 transitions, 330 flow [2023-09-01 11:45:14,456 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:45:14,466 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 147 transitions, 330 flow [2023-09-01 11:45:14,471 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 147 transitions, 330 flow [2023-09-01 11:45:14,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 147 transitions, 330 flow [2023-09-01 11:45:14,531 INFO L130 PetriNetUnfolder]: 14/147 cut-off events. [2023-09-01 11:45:14,531 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:45:14,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 147 events. 14/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-09-01 11:45:14,536 INFO L119 LiptonReduction]: Number of co-enabled transitions 2916 [2023-09-01 11:45:20,063 INFO L134 LiptonReduction]: Checked pairs total: 3523 [2023-09-01 11:45:20,064 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-09-01 11:45:20,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 11:45:20,076 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;@281e4c65, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:45:20,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-09-01 11:45:20,082 INFO L130 PetriNetUnfolder]: 6/36 cut-off events. [2023-09-01 11:45:20,082 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:45:20,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:20,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:20,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:20,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:20,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1406052379, now seen corresponding path program 1 times [2023-09-01 11:45:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844389708] [2023-09-01 11:45:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:20,731 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 11:45:20,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:20,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844389708] [2023-09-01 11:45:20,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844389708] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:45:20,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:45:20,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 11:45:20,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86202892] [2023-09-01 11:45:20,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:45:20,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 11:45:20,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 11:45:20,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 11:45:20,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 295 [2023-09-01 11:45:20,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 11:45:20,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:20,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 295 [2023-09-01 11:45:20,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:21,264 INFO L130 PetriNetUnfolder]: 3473/4229 cut-off events. [2023-09-01 11:45:21,264 INFO L131 PetriNetUnfolder]: For 247/247 co-relation queries the response was YES. [2023-09-01 11:45:21,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8842 conditions, 4229 events. 3473/4229 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 11612 event pairs, 837 based on Foata normal form. 1/2430 useless extension candidates. Maximal degree in co-relation 6136. Up to 3015 conditions per place. [2023-09-01 11:45:21,291 INFO L137 encePairwiseOnDemand]: 287/295 looper letters, 63 selfloop transitions, 7 changer transitions 1/71 dead transitions. [2023-09-01 11:45:21,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 353 flow [2023-09-01 11:45:21,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 11:45:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 11:45:21,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-09-01 11:45:21,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220338983050847 [2023-09-01 11:45:21,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-09-01 11:45:21,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-09-01 11:45:21,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:21,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-09-01 11:45:21,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 11:45:21,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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 11:45:21,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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 11:45:21,325 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 110 flow. Second operand 3 states and 462 transitions. [2023-09-01 11:45:21,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 353 flow [2023-09-01 11:45:21,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 71 transitions, 307 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-09-01 11:45:21,334 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 133 flow [2023-09-01 11:45:21,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-09-01 11:45:21,338 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-09-01 11:45:21,339 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 133 flow [2023-09-01 11:45:21,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 11:45:21,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:21,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:21,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:45:21,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:21,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:21,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1369672065, now seen corresponding path program 1 times [2023-09-01 11:45:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:21,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813695474] [2023-09-01 11:45:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:21,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:45:21,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813695474] [2023-09-01 11:45:21,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813695474] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:45:21,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:45:21,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:45:21,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786364588] [2023-09-01 11:45:21,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:45:21,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 11:45:21,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:21,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 11:45:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 11:45:21,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:21,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:21,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:21,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:21,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:22,135 INFO L130 PetriNetUnfolder]: 5067/6189 cut-off events. [2023-09-01 11:45:22,136 INFO L131 PetriNetUnfolder]: For 2240/2240 co-relation queries the response was YES. [2023-09-01 11:45:22,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15972 conditions, 6189 events. 5067/6189 cut-off events. For 2240/2240 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19154 event pairs, 259 based on Foata normal form. 122/6311 useless extension candidates. Maximal degree in co-relation 4985. Up to 3157 conditions per place. [2023-09-01 11:45:22,159 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 116 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2023-09-01 11:45:22,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 126 transitions, 621 flow [2023-09-01 11:45:22,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2023-09-01 11:45:22,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396610169491526 [2023-09-01 11:45:22,162 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2023-09-01 11:45:22,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2023-09-01 11:45:22,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:22,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2023-09-01 11:45:22,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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 11:45:22,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:22,169 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:22,169 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 133 flow. Second operand 5 states and 796 transitions. [2023-09-01 11:45:22,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 126 transitions, 621 flow [2023-09-01 11:45:22,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 126 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 11:45:22,173 INFO L231 Difference]: Finished difference. Result has 46 places, 50 transitions, 191 flow [2023-09-01 11:45:22,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2023-09-01 11:45:22,174 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-09-01 11:45:22,174 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 191 flow [2023-09-01 11:45:22,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:22,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:22,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:22,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:45:22,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:22,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash -388248143, now seen corresponding path program 1 times [2023-09-01 11:45:22,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:22,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869507854] [2023-09-01 11:45:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:22,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:45:22,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869507854] [2023-09-01 11:45:22,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869507854] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:45:22,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:45:22,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:45:22,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577206714] [2023-09-01 11:45:22,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:45:22,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 11:45:22,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:22,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 11:45:22,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 11:45:22,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:22,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:22,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:22,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:22,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:22,807 INFO L130 PetriNetUnfolder]: 4881/6003 cut-off events. [2023-09-01 11:45:22,807 INFO L131 PetriNetUnfolder]: For 4584/4584 co-relation queries the response was YES. [2023-09-01 11:45:22,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16717 conditions, 6003 events. 4881/6003 cut-off events. For 4584/4584 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19003 event pairs, 259 based on Foata normal form. 186/6189 useless extension candidates. Maximal degree in co-relation 7058. Up to 3157 conditions per place. [2023-09-01 11:45:22,834 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 116 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2023-09-01 11:45:22,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 124 transitions, 642 flow [2023-09-01 11:45:22,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 795 transitions. [2023-09-01 11:45:22,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5389830508474577 [2023-09-01 11:45:22,839 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 795 transitions. [2023-09-01 11:45:22,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 795 transitions. [2023-09-01 11:45:22,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:22,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 795 transitions. [2023-09-01 11:45:22,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 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 11:45:22,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:22,847 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:22,847 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 191 flow. Second operand 5 states and 795 transitions. [2023-09-01 11:45:22,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 124 transitions, 642 flow [2023-09-01 11:45:22,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 124 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 11:45:22,857 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 205 flow [2023-09-01 11:45:22,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-09-01 11:45:22,858 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-09-01 11:45:22,860 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 205 flow [2023-09-01 11:45:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:22,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:22,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:22,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:45:22,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:22,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:22,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1430537406, now seen corresponding path program 1 times [2023-09-01 11:45:22,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:22,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770831847] [2023-09-01 11:45:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:22,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:23,006 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 11:45:23,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:23,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770831847] [2023-09-01 11:45:23,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770831847] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 11:45:23,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081395589] [2023-09-01 11:45:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:23,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:45:23,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:45:23,010 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 11:45:23,013 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 11:45:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:23,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 11:45:23,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 11:45:23,311 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 11:45:23,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 11:45:23,398 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 11:45:23,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081395589] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 11:45:23,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 11:45:23,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-09-01 11:45:23,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010198251] [2023-09-01 11:45:23,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 11:45:23,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 11:45:23,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:23,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 11:45:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 11:45:23,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:23,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 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 11:45:23,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:23,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:23,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:24,245 INFO L130 PetriNetUnfolder]: 10865/13371 cut-off events. [2023-09-01 11:45:24,246 INFO L131 PetriNetUnfolder]: For 16553/16553 co-relation queries the response was YES. [2023-09-01 11:45:24,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39650 conditions, 13371 events. 10865/13371 cut-off events. For 16553/16553 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 47176 event pairs, 2521 based on Foata normal form. 336/13707 useless extension candidates. Maximal degree in co-relation 19156. Up to 5541 conditions per place. [2023-09-01 11:45:24,292 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 138 selfloop transitions, 8 changer transitions 0/146 dead transitions. [2023-09-01 11:45:24,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 146 transitions, 898 flow [2023-09-01 11:45:24,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 798 transitions. [2023-09-01 11:45:24,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5410169491525424 [2023-09-01 11:45:24,294 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 798 transitions. [2023-09-01 11:45:24,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 798 transitions. [2023-09-01 11:45:24,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:24,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 798 transitions. [2023-09-01 11:45:24,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.6) internal successors, (798), 5 states have internal predecessors, (798), 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 11:45:24,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:24,299 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:24,299 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 205 flow. Second operand 5 states and 798 transitions. [2023-09-01 11:45:24,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 146 transitions, 898 flow [2023-09-01 11:45:24,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 146 transitions, 879 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 11:45:24,304 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 253 flow [2023-09-01 11:45:24,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-09-01 11:45:24,305 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-09-01 11:45:24,305 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 253 flow [2023-09-01 11:45:24,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 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 11:45:24,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:24,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:24,313 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 11:45:24,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:45:24,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:24,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash -204521481, now seen corresponding path program 2 times [2023-09-01 11:45:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:24,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758166528] [2023-09-01 11:45:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:24,683 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 11:45:24,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:24,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758166528] [2023-09-01 11:45:24,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758166528] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 11:45:24,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425108124] [2023-09-01 11:45:24,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 11:45:24,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:45:24,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:45:24,690 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 11:45:24,691 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 11:45:24,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 11:45:24,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 11:45:24,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 11:45:24,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 11:45:24,942 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 11:45:24,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 11:45:25,014 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 11:45:25,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425108124] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 11:45:25,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 11:45:25,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-09-01 11:45:25,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745722537] [2023-09-01 11:45:25,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 11:45:25,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 11:45:25,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:25,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 11:45:25,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 11:45:25,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:25,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 142.66666666666666) internal successors, (856), 6 states have internal predecessors, (856), 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 11:45:25,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:25,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:25,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:25,970 INFO L130 PetriNetUnfolder]: 13057/16015 cut-off events. [2023-09-01 11:45:25,971 INFO L131 PetriNetUnfolder]: For 28136/28136 co-relation queries the response was YES. [2023-09-01 11:45:25,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55836 conditions, 16015 events. 13057/16015 cut-off events. For 28136/28136 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 56951 event pairs, 4131 based on Foata normal form. 452/16467 useless extension candidates. Maximal degree in co-relation 28964. Up to 6947 conditions per place. [2023-09-01 11:45:26,038 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 134 selfloop transitions, 8 changer transitions 0/142 dead transitions. [2023-09-01 11:45:26,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 142 transitions, 885 flow [2023-09-01 11:45:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2023-09-01 11:45:26,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396610169491526 [2023-09-01 11:45:26,042 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2023-09-01 11:45:26,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2023-09-01 11:45:26,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:26,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2023-09-01 11:45:26,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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 11:45:26,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:26,048 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:26,048 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 253 flow. Second operand 5 states and 796 transitions. [2023-09-01 11:45:26,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 142 transitions, 885 flow [2023-09-01 11:45:26,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 142 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 11:45:26,081 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 303 flow [2023-09-01 11:45:26,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-09-01 11:45:26,083 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2023-09-01 11:45:26,085 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 303 flow [2023-09-01 11:45:26,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.66666666666666) internal successors, (856), 6 states have internal predecessors, (856), 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 11:45:26,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:26,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:26,095 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 11:45:26,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:45:26,291 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:26,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1843659482, now seen corresponding path program 1 times [2023-09-01 11:45:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:26,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242842507] [2023-09-01 11:45:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:26,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:45:26,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:26,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242842507] [2023-09-01 11:45:26,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242842507] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:45:26,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:45:26,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:45:26,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923002967] [2023-09-01 11:45:26,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:45:26,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 11:45:26,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:26,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 11:45:26,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 11:45:26,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:26,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:26,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:26,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:26,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:27,312 INFO L130 PetriNetUnfolder]: 12765/15723 cut-off events. [2023-09-01 11:45:27,313 INFO L131 PetriNetUnfolder]: For 35246/35246 co-relation queries the response was YES. [2023-09-01 11:45:27,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57810 conditions, 15723 events. 12765/15723 cut-off events. For 35246/35246 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 58854 event pairs, 471 based on Foata normal form. 292/16015 useless extension candidates. Maximal degree in co-relation 39073. Up to 6655 conditions per place. [2023-09-01 11:45:27,395 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 152 selfloop transitions, 10 changer transitions 0/162 dead transitions. [2023-09-01 11:45:27,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 162 transitions, 1185 flow [2023-09-01 11:45:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 792 transitions. [2023-09-01 11:45:27,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369491525423729 [2023-09-01 11:45:27,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 792 transitions. [2023-09-01 11:45:27,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 792 transitions. [2023-09-01 11:45:27,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:27,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 792 transitions. [2023-09-01 11:45:27,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 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 11:45:27,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:27,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:27,402 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 303 flow. Second operand 5 states and 792 transitions. [2023-09-01 11:45:27,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 162 transitions, 1185 flow [2023-09-01 11:45:27,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 162 transitions, 1156 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 11:45:27,536 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 357 flow [2023-09-01 11:45:27,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=357, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-09-01 11:45:27,538 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-09-01 11:45:27,538 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 357 flow [2023-09-01 11:45:27,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:27,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:27,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:27,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:45:27,539 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:27,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash 49168946, now seen corresponding path program 1 times [2023-09-01 11:45:27,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:27,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745207097] [2023-09-01 11:45:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:27,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:27,661 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 11:45:27,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:27,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745207097] [2023-09-01 11:45:27,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745207097] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 11:45:27,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022071915] [2023-09-01 11:45:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:27,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:45:27,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:45:27,663 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 11:45:27,665 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 11:45:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:27,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 11:45:27,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 11:45:27,853 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 11:45:27,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 11:45:27,893 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 11:45:27,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022071915] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 11:45:27,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 11:45:27,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-09-01 11:45:27,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825014106] [2023-09-01 11:45:27,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 11:45:27,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 11:45:27,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 11:45:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 11:45:27,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:27,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 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 11:45:27,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:27,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:27,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:29,717 INFO L130 PetriNetUnfolder]: 28973/35717 cut-off events. [2023-09-01 11:45:29,717 INFO L131 PetriNetUnfolder]: For 94890/94890 co-relation queries the response was YES. [2023-09-01 11:45:29,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137761 conditions, 35717 events. 28973/35717 cut-off events. For 94890/94890 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 145456 event pairs, 5739 based on Foata normal form. 900/36617 useless extension candidates. Maximal degree in co-relation 88518. Up to 15928 conditions per place. [2023-09-01 11:45:29,908 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 179 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2023-09-01 11:45:29,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 187 transitions, 1478 flow [2023-09-01 11:45:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 790 transitions. [2023-09-01 11:45:29,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535593220338983 [2023-09-01 11:45:29,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 790 transitions. [2023-09-01 11:45:29,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 790 transitions. [2023-09-01 11:45:29,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:29,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 790 transitions. [2023-09-01 11:45:29,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 11:45:29,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:29,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:29,926 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 357 flow. Second operand 5 states and 790 transitions. [2023-09-01 11:45:29,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 187 transitions, 1478 flow [2023-09-01 11:45:29,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 187 transitions, 1430 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-09-01 11:45:29,982 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 397 flow [2023-09-01 11:45:29,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-09-01 11:45:29,983 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-09-01 11:45:29,983 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 397 flow [2023-09-01 11:45:29,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 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 11:45:29,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:29,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:29,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 11:45:30,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:45:30,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:30,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:30,189 INFO L85 PathProgramCache]: Analyzing trace with hash 757953015, now seen corresponding path program 1 times [2023-09-01 11:45:30,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:30,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071154748] [2023-09-01 11:45:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:30,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:45:30,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:30,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071154748] [2023-09-01 11:45:30,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071154748] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:45:30,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:45:30,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:45:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397065356] [2023-09-01 11:45:30,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:45:30,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 11:45:30,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 11:45:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 11:45:30,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:30,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:30,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:30,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:30,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:32,478 INFO L130 PetriNetUnfolder]: 28517/35261 cut-off events. [2023-09-01 11:45:32,478 INFO L131 PetriNetUnfolder]: For 98216/98216 co-relation queries the response was YES. [2023-09-01 11:45:32,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150029 conditions, 35261 events. 28517/35261 cut-off events. For 98216/98216 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 146629 event pairs, 1619 based on Foata normal form. 456/35717 useless extension candidates. Maximal degree in co-relation 99537. Up to 15472 conditions per place. [2023-09-01 11:45:32,641 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 186 selfloop transitions, 10 changer transitions 0/196 dead transitions. [2023-09-01 11:45:32,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 196 transitions, 1571 flow [2023-09-01 11:45:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:32,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2023-09-01 11:45:32,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342372881355932 [2023-09-01 11:45:32,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2023-09-01 11:45:32,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2023-09-01 11:45:32,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:32,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2023-09-01 11:45:32,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 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 11:45:32,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:32,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:32,648 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 397 flow. Second operand 5 states and 788 transitions. [2023-09-01 11:45:32,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 196 transitions, 1571 flow [2023-09-01 11:45:32,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 196 transitions, 1571 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 11:45:32,896 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 460 flow [2023-09-01 11:45:32,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=460, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-09-01 11:45:32,896 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-09-01 11:45:32,897 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 460 flow [2023-09-01 11:45:32,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:32,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:32,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:32,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 11:45:32,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:32,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash -48523343, now seen corresponding path program 2 times [2023-09-01 11:45:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569513056] [2023-09-01 11:45:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:45:33,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569513056] [2023-09-01 11:45:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569513056] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:45:33,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:45:33,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:45:33,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83748496] [2023-09-01 11:45:33,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:45:33,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 11:45:33,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:33,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 11:45:33,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 11:45:33,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:33,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:33,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:33,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:33,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:35,250 INFO L130 PetriNetUnfolder]: 32569/40201 cut-off events. [2023-09-01 11:45:35,251 INFO L131 PetriNetUnfolder]: For 118580/118580 co-relation queries the response was YES. [2023-09-01 11:45:35,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178904 conditions, 40201 events. 32569/40201 cut-off events. For 118580/118580 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 166776 event pairs, 5319 based on Foata normal form. 888/41089 useless extension candidates. Maximal degree in co-relation 118526. Up to 23661 conditions per place. [2023-09-01 11:45:35,445 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 178 selfloop transitions, 10 changer transitions 0/188 dead transitions. [2023-09-01 11:45:35,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 188 transitions, 1539 flow [2023-09-01 11:45:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:35,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 784 transitions. [2023-09-01 11:45:35,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315254237288135 [2023-09-01 11:45:35,448 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 784 transitions. [2023-09-01 11:45:35,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 784 transitions. [2023-09-01 11:45:35,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:35,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 784 transitions. [2023-09-01 11:45:35,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 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 11:45:35,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:35,451 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:35,451 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 460 flow. Second operand 5 states and 784 transitions. [2023-09-01 11:45:35,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 188 transitions, 1539 flow [2023-09-01 11:45:35,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 188 transitions, 1524 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 11:45:35,943 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 499 flow [2023-09-01 11:45:35,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2023-09-01 11:45:35,944 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-09-01 11:45:35,944 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 499 flow [2023-09-01 11:45:35,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:35,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:35,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:35,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 11:45:35,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:35,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:35,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1305311766, now seen corresponding path program 2 times [2023-09-01 11:45:35,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:35,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440403925] [2023-09-01 11:45:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:35,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:45:36,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:36,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440403925] [2023-09-01 11:45:36,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440403925] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:45:36,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:45:36,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:45:36,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097544007] [2023-09-01 11:45:36,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:45:36,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 11:45:36,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 11:45:36,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 11:45:36,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:36,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:36,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:36,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:36,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:38,110 INFO L130 PetriNetUnfolder]: 28961/35681 cut-off events. [2023-09-01 11:45:38,110 INFO L131 PetriNetUnfolder]: For 113304/113304 co-relation queries the response was YES. [2023-09-01 11:45:38,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165857 conditions, 35681 events. 28961/35681 cut-off events. For 113304/113304 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 145276 event pairs, 1643 based on Foata normal form. 444/36125 useless extension candidates. Maximal degree in co-relation 145228. Up to 15910 conditions per place. [2023-09-01 11:45:38,274 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 187 selfloop transitions, 9 changer transitions 0/196 dead transitions. [2023-09-01 11:45:38,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 196 transitions, 1625 flow [2023-09-01 11:45:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:38,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2023-09-01 11:45:38,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335593220338983 [2023-09-01 11:45:38,276 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2023-09-01 11:45:38,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2023-09-01 11:45:38,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:38,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2023-09-01 11:45:38,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 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 11:45:38,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:38,280 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:38,280 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 499 flow. Second operand 5 states and 787 transitions. [2023-09-01 11:45:38,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 196 transitions, 1625 flow [2023-09-01 11:45:38,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 196 transitions, 1601 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-09-01 11:45:38,822 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 490 flow [2023-09-01 11:45:38,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2023-09-01 11:45:38,823 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-09-01 11:45:38,823 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 490 flow [2023-09-01 11:45:38,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:38,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:38,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:38,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 11:45:38,824 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:38,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:38,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1522859476, now seen corresponding path program 2 times [2023-09-01 11:45:38,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:38,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726092065] [2023-09-01 11:45:38,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:38,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:45:38,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:38,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726092065] [2023-09-01 11:45:38,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726092065] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:45:38,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:45:38,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:45:38,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50287461] [2023-09-01 11:45:38,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:45:38,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 11:45:38,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:38,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 11:45:38,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 11:45:38,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:38,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:38,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:38,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:38,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:41,014 INFO L130 PetriNetUnfolder]: 24413/29993 cut-off events. [2023-09-01 11:45:41,014 INFO L131 PetriNetUnfolder]: For 112055/112055 co-relation queries the response was YES. [2023-09-01 11:45:41,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139706 conditions, 29993 events. 24413/29993 cut-off events. For 112055/112055 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 122857 event pairs, 885 based on Foata normal form. 508/30501 useless extension candidates. Maximal degree in co-relation 122129. Up to 13182 conditions per place. [2023-09-01 11:45:41,186 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 198 selfloop transitions, 9 changer transitions 0/207 dead transitions. [2023-09-01 11:45:41,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 207 transitions, 1776 flow [2023-09-01 11:45:41,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 791 transitions. [2023-09-01 11:45:41,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536271186440678 [2023-09-01 11:45:41,189 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 791 transitions. [2023-09-01 11:45:41,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 791 transitions. [2023-09-01 11:45:41,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:41,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 791 transitions. [2023-09-01 11:45:41,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 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 11:45:41,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:41,193 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:41,193 INFO L175 Difference]: Start difference. First operand has 86 places, 74 transitions, 490 flow. Second operand 5 states and 791 transitions. [2023-09-01 11:45:41,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 207 transitions, 1776 flow [2023-09-01 11:45:41,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 207 transitions, 1739 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 11:45:41,383 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 494 flow [2023-09-01 11:45:41,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2023-09-01 11:45:41,384 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2023-09-01 11:45:41,385 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 494 flow [2023-09-01 11:45:41,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:41,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:41,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:41,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 11:45:41,385 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:41,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:41,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1825918594, now seen corresponding path program 2 times [2023-09-01 11:45:41,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:41,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014846908] [2023-09-01 11:45:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:41,516 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 11:45:41,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014846908] [2023-09-01 11:45:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014846908] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 11:45:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025543974] [2023-09-01 11:45:41,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 11:45:41,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:45:41,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:45:41,517 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 11:45:41,519 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 11:45:41,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 11:45:41,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 11:45:41,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 11:45:41,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 11:45:41,750 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 11:45:41,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 11:45:41,796 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 11:45:41,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025543974] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 11:45:41,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 11:45:41,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-09-01 11:45:41,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738142017] [2023-09-01 11:45:41,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 11:45:41,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 11:45:41,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:41,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 11:45:41,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 11:45:41,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:41,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 145.33333333333334) internal successors, (872), 6 states have internal predecessors, (872), 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 11:45:41,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:41,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:41,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:44,125 INFO L130 PetriNetUnfolder]: 29277/35873 cut-off events. [2023-09-01 11:45:44,125 INFO L131 PetriNetUnfolder]: For 124698/124698 co-relation queries the response was YES. [2023-09-01 11:45:44,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170952 conditions, 35873 events. 29277/35873 cut-off events. For 124698/124698 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 145192 event pairs, 5255 based on Foata normal form. 1016/36889 useless extension candidates. Maximal degree in co-relation 153598. Up to 20069 conditions per place. [2023-09-01 11:45:44,300 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 193 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2023-09-01 11:45:44,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 201 transitions, 1711 flow [2023-09-01 11:45:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:44,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2023-09-01 11:45:44,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342372881355932 [2023-09-01 11:45:44,302 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2023-09-01 11:45:44,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2023-09-01 11:45:44,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:44,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2023-09-01 11:45:44,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 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 11:45:44,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:44,305 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:44,305 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 494 flow. Second operand 5 states and 788 transitions. [2023-09-01 11:45:44,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 201 transitions, 1711 flow [2023-09-01 11:45:44,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 201 transitions, 1702 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 11:45:44,484 INFO L231 Difference]: Finished difference. Result has 95 places, 76 transitions, 535 flow [2023-09-01 11:45:44,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=535, PETRI_PLACES=95, PETRI_TRANSITIONS=76} [2023-09-01 11:45:44,485 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 45 predicate places. [2023-09-01 11:45:44,485 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 76 transitions, 535 flow [2023-09-01 11:45:44,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.33333333333334) internal successors, (872), 6 states have internal predecessors, (872), 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 11:45:44,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:44,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:44,492 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 11:45:44,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:45:44,689 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:44,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:44,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1783679507, now seen corresponding path program 2 times [2023-09-01 11:45:44,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:44,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164239048] [2023-09-01 11:45:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:44,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:45:44,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:44,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164239048] [2023-09-01 11:45:44,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164239048] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:45:44,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:45:44,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:45:44,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369792510] [2023-09-01 11:45:44,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:45:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 11:45:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:45:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 11:45:44,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 11:45:44,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-09-01 11:45:44,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 76 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:44,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:45:44,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-09-01 11:45:44,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:45:47,410 INFO L130 PetriNetUnfolder]: 33421/40853 cut-off events. [2023-09-01 11:45:47,410 INFO L131 PetriNetUnfolder]: For 170067/170067 co-relation queries the response was YES. [2023-09-01 11:45:47,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204727 conditions, 40853 events. 33421/40853 cut-off events. For 170067/170067 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 162364 event pairs, 10579 based on Foata normal form. 836/41689 useless extension candidates. Maximal degree in co-relation 184652. Up to 23061 conditions per place. [2023-09-01 11:45:47,878 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 209 selfloop transitions, 8 changer transitions 0/217 dead transitions. [2023-09-01 11:45:47,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 217 transitions, 1913 flow [2023-09-01 11:45:47,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 11:45:47,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 11:45:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 792 transitions. [2023-09-01 11:45:47,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369491525423729 [2023-09-01 11:45:47,882 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 792 transitions. [2023-09-01 11:45:47,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 792 transitions. [2023-09-01 11:45:47,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:45:47,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 792 transitions. [2023-09-01 11:45:47,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 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 11:45:47,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:47,886 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 11:45:47,886 INFO L175 Difference]: Start difference. First operand has 95 places, 76 transitions, 535 flow. Second operand 5 states and 792 transitions. [2023-09-01 11:45:47,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 217 transitions, 1913 flow [2023-09-01 11:45:48,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 217 transitions, 1835 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-09-01 11:45:48,276 INFO L231 Difference]: Finished difference. Result has 99 places, 79 transitions, 568 flow [2023-09-01 11:45:48,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=99, PETRI_TRANSITIONS=79} [2023-09-01 11:45:48,277 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 49 predicate places. [2023-09-01 11:45:48,277 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 79 transitions, 568 flow [2023-09-01 11:45:48,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 11:45:48,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:45:48,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:45:48,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 11:45:48,278 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:45:48,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:45:48,278 INFO L85 PathProgramCache]: Analyzing trace with hash 505429562, now seen corresponding path program 1 times [2023-09-01 11:45:48,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:45:48,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502101719] [2023-09-01 11:45:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:48,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:45:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:45:48,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:45:48,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502101719] [2023-09-01 11:45:48,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502101719] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 11:45:48,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594831957] [2023-09-01 11:45:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:45:48,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:45:48,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:45:48,958 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 11:45:48,959 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 11:45:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:45:49,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 11:45:49,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 11:46:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:46:13,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 11:46:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:46:21,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594831957] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 11:46:21,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 11:46:21,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-09-01 11:46:21,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962090343] [2023-09-01 11:46:21,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 11:46:21,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 11:46:21,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:46:21,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 11:46:21,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=167, Unknown=8, NotChecked=0, Total=240 [2023-09-01 11:46:24,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:46:27,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:46:29,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:46:31,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:46:33,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:46:35,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:46:37,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:46:39,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:46:41,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:46:43,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:46:44,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-09-01 11:46:44,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 79 transitions, 568 flow. Second operand has 16 states, 16 states have (on average 119.5) internal successors, (1912), 16 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:46:44,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:46:44,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-09-01 11:46:44,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:47:03,331 WARN L222 SmtUtils]: Spent 17.01s on a formula simplification. DAG size of input: 73 DAG size of output: 30 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 11:47:04,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:06,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:08,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:15,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:20,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:22,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:24,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:29,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:38,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:40,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:42,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:44,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:46,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:48,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:51,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:53,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:47:57,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:00,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:10,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:12,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:14,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:22,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:24,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:27,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:29,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:32,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:34,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:36,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:41,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:43,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:48:45,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:01,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:05,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:08,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:12,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:14,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:17,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:19,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:22,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:24,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:25,544 INFO L130 PetriNetUnfolder]: 52345/64696 cut-off events. [2023-09-01 11:49:25,544 INFO L131 PetriNetUnfolder]: For 246956/246956 co-relation queries the response was YES. [2023-09-01 11:49:25,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322921 conditions, 64696 events. 52345/64696 cut-off events. For 246956/246956 co-relation queries the response was YES. Maximal size of possible extension queue 1576. Compared 286770 event pairs, 7638 based on Foata normal form. 68/64764 useless extension candidates. Maximal degree in co-relation 294451. Up to 45441 conditions per place. [2023-09-01 11:49:26,153 INFO L137 encePairwiseOnDemand]: 268/295 looper letters, 472 selfloop transitions, 264 changer transitions 37/773 dead transitions. [2023-09-01 11:49:26,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 773 transitions, 6520 flow [2023-09-01 11:49:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 11:49:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 11:49:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3003 transitions. [2023-09-01 11:49:26,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46271186440677964 [2023-09-01 11:49:26,159 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3003 transitions. [2023-09-01 11:49:26,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3003 transitions. [2023-09-01 11:49:26,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:49:26,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3003 transitions. [2023-09-01 11:49:26,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 136.5) internal successors, (3003), 22 states have internal predecessors, (3003), 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 11:49:26,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 295.0) internal successors, (6785), 23 states have internal predecessors, (6785), 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 11:49:26,169 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 295.0) internal successors, (6785), 23 states have internal predecessors, (6785), 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 11:49:26,170 INFO L175 Difference]: Start difference. First operand has 99 places, 79 transitions, 568 flow. Second operand 22 states and 3003 transitions. [2023-09-01 11:49:26,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 773 transitions, 6520 flow [2023-09-01 11:49:27,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 773 transitions, 6345 flow, removed 66 selfloop flow, removed 1 redundant places. [2023-09-01 11:49:27,445 INFO L231 Difference]: Finished difference. Result has 132 places, 344 transitions, 3706 flow [2023-09-01 11:49:27,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3706, PETRI_PLACES=132, PETRI_TRANSITIONS=344} [2023-09-01 11:49:27,446 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 82 predicate places. [2023-09-01 11:49:27,446 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 344 transitions, 3706 flow [2023-09-01 11:49:27,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.5) internal successors, (1912), 16 states have internal predecessors, (1912), 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 11:49:27,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:49:27,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:49:27,452 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 11:49:27,647 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,SelfDestructingSolverStorable13 [2023-09-01 11:49:27,647 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:49:27,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:49:27,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1464858319, now seen corresponding path program 1 times [2023-09-01 11:49:27,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:49:27,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486339330] [2023-09-01 11:49:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:49:27,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:49:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:49:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:49:28,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:49:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486339330] [2023-09-01 11:49:28,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486339330] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 11:49:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609991509] [2023-09-01 11:49:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:49:28,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:49:28,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:49:28,707 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 11:49:28,708 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 11:49:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:49:29,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 11:49:29,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 11:49:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:49:42,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 11:49:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:49:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609991509] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 11:49:50,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 11:49:50,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-09-01 11:49:50,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793806626] [2023-09-01 11:49:50,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 11:49:50,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 11:49:50,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:49:50,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 11:49:50,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=167, Unknown=7, NotChecked=0, Total=240 [2023-09-01 11:49:52,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:54,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:56,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:49:58,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:50:00,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:50:03,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:50:06,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:50:06,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-09-01 11:50:06,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 344 transitions, 3706 flow. Second operand has 16 states, 16 states have (on average 119.6875) internal successors, (1915), 16 states have internal predecessors, (1915), 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 11:50:06,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:50:06,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-09-01 11:50:06,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:50:08,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:50:50,594 WARN L222 SmtUtils]: Spent 39.35s on a formula simplification. DAG size of input: 94 DAG size of output: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 11:51:01,994 WARN L222 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 81 DAG size of output: 34 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 11:51:03,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:05,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:07,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:09,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:20,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:22,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:24,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:26,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:28,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:31,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:33,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:36,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:38,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:40,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:47,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:51:56,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:01,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:04,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:07,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:07,898 INFO L130 PetriNetUnfolder]: 62358/77215 cut-off events. [2023-09-01 11:52:07,898 INFO L131 PetriNetUnfolder]: For 482497/482497 co-relation queries the response was YES. [2023-09-01 11:52:08,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476526 conditions, 77215 events. 62358/77215 cut-off events. For 482497/482497 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 355468 event pairs, 7609 based on Foata normal form. 90/77305 useless extension candidates. Maximal degree in co-relation 472428. Up to 66901 conditions per place. [2023-09-01 11:52:08,660 INFO L137 encePairwiseOnDemand]: 285/295 looper letters, 603 selfloop transitions, 128 changer transitions 7/738 dead transitions. [2023-09-01 11:52:08,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 738 transitions, 8266 flow [2023-09-01 11:52:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 11:52:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 11:52:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1791 transitions. [2023-09-01 11:52:08,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670143415906128 [2023-09-01 11:52:08,663 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1791 transitions. [2023-09-01 11:52:08,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1791 transitions. [2023-09-01 11:52:08,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:52:08,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1791 transitions. [2023-09-01 11:52:08,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 137.76923076923077) internal successors, (1791), 13 states have internal predecessors, (1791), 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 11:52:08,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 295.0) internal successors, (4130), 14 states have internal predecessors, (4130), 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 11:52:08,669 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 295.0) internal successors, (4130), 14 states have internal predecessors, (4130), 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 11:52:08,670 INFO L175 Difference]: Start difference. First operand has 132 places, 344 transitions, 3706 flow. Second operand 13 states and 1791 transitions. [2023-09-01 11:52:08,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 738 transitions, 8266 flow [2023-09-01 11:52:11,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 738 transitions, 7855 flow, removed 202 selfloop flow, removed 1 redundant places. [2023-09-01 11:52:11,965 INFO L231 Difference]: Finished difference. Result has 150 places, 467 transitions, 5001 flow [2023-09-01 11:52:11,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=3319, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5001, PETRI_PLACES=150, PETRI_TRANSITIONS=467} [2023-09-01 11:52:11,966 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 100 predicate places. [2023-09-01 11:52:11,966 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 467 transitions, 5001 flow [2023-09-01 11:52:11,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.6875) internal successors, (1915), 16 states have internal predecessors, (1915), 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 11:52:11,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:52:11,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:52:11,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 11:52:12,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 11:52:12,169 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:52:12,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:52:12,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1324805474, now seen corresponding path program 2 times [2023-09-01 11:52:12,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:52:12,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218007310] [2023-09-01 11:52:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:52:12,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:52:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:52:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:52:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:52:12,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218007310] [2023-09-01 11:52:12,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218007310] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 11:52:12,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707144125] [2023-09-01 11:52:12,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 11:52:12,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:52:12,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:52:12,645 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 11:52:12,648 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 11:52:12,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 11:52:12,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 11:52:12,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 11:52:12,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 11:52:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:52:27,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 11:52:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:52:31,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707144125] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 11:52:31,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 11:52:31,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-09-01 11:52:31,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52687845] [2023-09-01 11:52:31,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 11:52:31,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 11:52:31,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:52:31,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 11:52:31,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=170, Unknown=5, NotChecked=0, Total=240 [2023-09-01 11:52:33,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:34,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:37,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:39,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:41,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:43,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:45,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:47,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:50,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:52,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:52,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-09-01 11:52:52,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 467 transitions, 5001 flow. Second operand has 16 states, 16 states have (on average 119.9375) internal successors, (1919), 16 states have internal predecessors, (1919), 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 11:52:52,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:52:52,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-09-01 11:52:52,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:52:55,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:52:58,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:00,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:13,053 WARN L222 SmtUtils]: Spent 9.28s on a formula simplification. DAG size of input: 73 DAG size of output: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 11:53:15,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:28,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:30,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:33,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:34,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:36,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:38,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:45,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:46,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:49,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:51,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:54,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:53:57,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:07,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:10,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:17,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:21,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:23,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:26,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:28,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:31,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:33,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:35,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:37,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:54:37,984 INFO L130 PetriNetUnfolder]: 71686/88910 cut-off events. [2023-09-01 11:54:37,984 INFO L131 PetriNetUnfolder]: For 645145/645145 co-relation queries the response was YES. [2023-09-01 11:54:38,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579112 conditions, 88910 events. 71686/88910 cut-off events. For 645145/645145 co-relation queries the response was YES. Maximal size of possible extension queue 2294. Compared 418150 event pairs, 8585 based on Foata normal form. 65/88975 useless extension candidates. Maximal degree in co-relation 575372. Up to 77440 conditions per place. [2023-09-01 11:54:39,191 INFO L137 encePairwiseOnDemand]: 285/295 looper letters, 732 selfloop transitions, 175 changer transitions 16/923 dead transitions. [2023-09-01 11:54:39,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 923 transitions, 11204 flow [2023-09-01 11:54:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 11:54:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 11:54:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2178 transitions. [2023-09-01 11:54:39,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614406779661017 [2023-09-01 11:54:39,195 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2178 transitions. [2023-09-01 11:54:39,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2178 transitions. [2023-09-01 11:54:39,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:54:39,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2178 transitions. [2023-09-01 11:54:39,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 136.125) internal successors, (2178), 16 states have internal predecessors, (2178), 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 11:54:39,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 295.0) internal successors, (5015), 17 states have internal predecessors, (5015), 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 11:54:39,202 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 295.0) internal successors, (5015), 17 states have internal predecessors, (5015), 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 11:54:39,202 INFO L175 Difference]: Start difference. First operand has 150 places, 467 transitions, 5001 flow. Second operand 16 states and 2178 transitions. [2023-09-01 11:54:39,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 923 transitions, 11204 flow [2023-09-01 11:54:43,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 923 transitions, 10769 flow, removed 214 selfloop flow, removed 1 redundant places. [2023-09-01 11:54:43,808 INFO L231 Difference]: Finished difference. Result has 174 places, 615 transitions, 6995 flow [2023-09-01 11:54:43,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=4566, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6995, PETRI_PLACES=174, PETRI_TRANSITIONS=615} [2023-09-01 11:54:43,808 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 124 predicate places. [2023-09-01 11:54:43,809 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 615 transitions, 6995 flow [2023-09-01 11:54:43,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.9375) internal successors, (1919), 16 states have internal predecessors, (1919), 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 11:54:43,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:54:43,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:54:43,816 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 11:54:44,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:54:44,010 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:54:44,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:54:44,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1690832751, now seen corresponding path program 1 times [2023-09-01 11:54:44,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:54:44,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001577707] [2023-09-01 11:54:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:54:44,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:54:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:54:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:54:44,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:54:44,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001577707] [2023-09-01 11:54:44,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001577707] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 11:54:44,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981104320] [2023-09-01 11:54:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:54:44,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:54:44,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:54:44,505 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 11:54:44,507 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 11:54:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:54:45,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 11:54:45,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 11:55:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:55:06,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 11:55:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:55:12,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981104320] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 11:55:12,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 11:55:12,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-09-01 11:55:12,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929518792] [2023-09-01 11:55:12,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 11:55:12,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 11:55:12,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:55:12,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 11:55:12,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=168, Unknown=2, NotChecked=0, Total=240 [2023-09-01 11:55:13,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:55:15,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:55:18,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:55:21,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:55:23,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:55:27,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:55:30,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:55:30,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-09-01 11:55:30,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 615 transitions, 6995 flow. Second operand has 16 states, 16 states have (on average 119.4375) internal successors, (1911), 16 states have internal predecessors, (1911), 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 11:55:30,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:55:30,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-09-01 11:55:30,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:55:41,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:55:48,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:55:51,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:55:55,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:56:03,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:56:06,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:56:08,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:56:12,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:56:15,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:56:18,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:56:20,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:56:35,151 INFO L130 PetriNetUnfolder]: 86546/107671 cut-off events. [2023-09-01 11:56:35,152 INFO L131 PetriNetUnfolder]: For 923044/923044 co-relation queries the response was YES. [2023-09-01 11:56:36,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738334 conditions, 107671 events. 86546/107671 cut-off events. For 923044/923044 co-relation queries the response was YES. Maximal size of possible extension queue 2748. Compared 525470 event pairs, 5529 based on Foata normal form. 97/107768 useless extension candidates. Maximal degree in co-relation 734244. Up to 92648 conditions per place. [2023-09-01 11:56:36,774 INFO L137 encePairwiseOnDemand]: 285/295 looper letters, 968 selfloop transitions, 148 changer transitions 10/1126 dead transitions. [2023-09-01 11:56:36,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1126 transitions, 13636 flow [2023-09-01 11:56:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 11:56:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 11:56:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2242 transitions. [2023-09-01 11:56:36,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-09-01 11:56:36,777 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2242 transitions. [2023-09-01 11:56:36,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2242 transitions. [2023-09-01 11:56:36,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:56:36,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2242 transitions. [2023-09-01 11:56:36,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 140.125) internal successors, (2242), 16 states have internal predecessors, (2242), 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 11:56:36,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 295.0) internal successors, (5015), 17 states have internal predecessors, (5015), 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 11:56:36,783 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 295.0) internal successors, (5015), 17 states have internal predecessors, (5015), 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 11:56:36,783 INFO L175 Difference]: Start difference. First operand has 174 places, 615 transitions, 6995 flow. Second operand 16 states and 2242 transitions. [2023-09-01 11:56:36,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1126 transitions, 13636 flow [2023-09-01 11:56:44,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 1126 transitions, 12965 flow, removed 332 selfloop flow, removed 1 redundant places. [2023-09-01 11:56:44,807 INFO L231 Difference]: Finished difference. Result has 198 places, 759 transitions, 8759 flow [2023-09-01 11:56:44,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=6324, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8759, PETRI_PLACES=198, PETRI_TRANSITIONS=759} [2023-09-01 11:56:44,808 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 148 predicate places. [2023-09-01 11:56:44,808 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 759 transitions, 8759 flow [2023-09-01 11:56:44,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.4375) internal successors, (1911), 16 states have internal predecessors, (1911), 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 11:56:44,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:56:44,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:56:44,817 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 11:56:45,013 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,SelfDestructingSolverStorable16 [2023-09-01 11:56:45,013 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 11:56:45,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:56:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1532018153, now seen corresponding path program 2 times [2023-09-01 11:56:45,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:56:45,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023608754] [2023-09-01 11:56:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:56:45,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:56:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:56:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:56:45,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:56:45,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023608754] [2023-09-01 11:56:45,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023608754] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 11:56:45,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659302785] [2023-09-01 11:56:45,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 11:56:45,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 11:56:45,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:56:45,425 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 11:56:45,426 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 11:56:45,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 11:56:45,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 11:56:45,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 11:56:45,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 11:56:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:56:56,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 11:57:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:57:01,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659302785] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 11:57:01,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 11:57:01,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2023-09-01 11:57:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805609819] [2023-09-01 11:57:01,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 11:57:01,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 11:57:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:57:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 11:57:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=126, Unknown=5, NotChecked=0, Total=182 [2023-09-01 11:57:02,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:05,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:08,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:10,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:13,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:15,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:15,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-09-01 11:57:15,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 759 transitions, 8759 flow. Second operand has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:57:15,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:57:15,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-09-01 11:57:15,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:57:18,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:20,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:23,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:25,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:27,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:30,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:34,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:36,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:38,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:41,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:44,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:46,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:57:59,569 WARN L222 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 68 DAG size of output: 34 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 11:58:02,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:04,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:06,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:08,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:12,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:14,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:29,367 WARN L222 SmtUtils]: Spent 10.28s on a formula simplification. DAG size of input: 84 DAG size of output: 39 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 11:58:31,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:33,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:35,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:43,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:46,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:48,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:51,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:52,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:54,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:56,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:58:58,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:00,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:03,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:05,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:07,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:09,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:12,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:13,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:15,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:17,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:20,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:23,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:25,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:27,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-09-01 11:59:29,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15