./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:01:58,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:01:58,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:01:58,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:01:58,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:01:58,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:01:58,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:01:58,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:01:58,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:01:58,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:01:58,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:01:58,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:01:58,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:01:58,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:01:58,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:01:58,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:01:58,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:01:58,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:01:58,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:01:58,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:01:58,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:01:58,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:01:58,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:01:58,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:01:58,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:01:58,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:01:58,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:01:58,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:01:58,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:01:58,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:01:58,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:01:58,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:01:58,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:01:58,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:01:58,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:01:58,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:01:58,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:01:58,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:01:58,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:01:58,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:01:58,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:01:58,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:01:58,392 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:01:58,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:01:58,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:01:58,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:01:58,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:01:58,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:01:58,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:01:58,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:01:58,395 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:01:58,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:01:58,397 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:01:58,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:01:58,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:01:58,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:01:58,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:01:58,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:01:58,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:01:58,398 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:01:58,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:01:58,398 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:01:58,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:01:58,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:01:58,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:01:58,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:01:58,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:01:58,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:01:58,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:01:58,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:01:58,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:01:58,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:01:58,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:01:58,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:01:58,401 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:01:58,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:01:58,402 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:01:58,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:01:58,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:01:58,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:01:58,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:01:58,746 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:01:58,746 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:01:58,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-31 01:01:59,833 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:01:59,997 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:01:59,997 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-31 01:02:00,005 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ef9f3c0/5269bbfc5ae24c9c94cdfb4a08617a86/FLAGb0097ac7e [2023-08-31 01:02:00,019 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ef9f3c0/5269bbfc5ae24c9c94cdfb4a08617a86 [2023-08-31 01:02:00,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:02:00,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:02:00,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:02:00,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:02:00,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:02:00,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a16663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00, skipping insertion in model container [2023-08-31 01:02:00,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:02:00,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:02:00,255 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/chl-array-int-subst.wvr.c[2781,2794] [2023-08-31 01:02:00,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:02:00,279 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:02:00,315 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/chl-array-int-subst.wvr.c[2781,2794] [2023-08-31 01:02:00,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:02:00,339 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:02:00,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00 WrapperNode [2023-08-31 01:02:00,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:02:00,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:02:00,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:02:00,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:02:00,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,405 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 287 [2023-08-31 01:02:00,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:02:00,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:02:00,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:02:00,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:02:00,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:02:00,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:02:00,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:02:00,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:02:00,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (1/1) ... [2023-08-31 01:02:00,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:02:00,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:02:00,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 01:02:00,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 01:02:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:02:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:02:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:02:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:02:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:02:00,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:02:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:02:00,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:02:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:02:00,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:02:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:02:00,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 01:02:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:02:00,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:02:00,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:02:00,522 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:02:00,677 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:02:00,679 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:02:01,094 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:02:01,108 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:02:01,108 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 01:02:01,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:02:01 BoogieIcfgContainer [2023-08-31 01:02:01,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:02:01,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:02:01,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:02:01,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:02:01,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:02:00" (1/3) ... [2023-08-31 01:02:01,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b56b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:02:01, skipping insertion in model container [2023-08-31 01:02:01,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:02:00" (2/3) ... [2023-08-31 01:02:01,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b56b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:02:01, skipping insertion in model container [2023-08-31 01:02:01,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:02:01" (3/3) ... [2023-08-31 01:02:01,120 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-08-31 01:02:01,134 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:02:01,142 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:02:01,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:02:01,142 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:02:01,255 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:02:01,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 324 transitions, 672 flow [2023-08-31 01:02:01,409 INFO L130 PetriNetUnfolder]: 29/321 cut-off events. [2023-08-31 01:02:01,409 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:02:01,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 321 events. 29/321 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 505 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-08-31 01:02:01,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 324 transitions, 672 flow [2023-08-31 01:02:01,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 311 transitions, 640 flow [2023-08-31 01:02:01,426 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:02:01,438 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 311 transitions, 640 flow [2023-08-31 01:02:01,444 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 311 transitions, 640 flow [2023-08-31 01:02:01,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 311 transitions, 640 flow [2023-08-31 01:02:01,526 INFO L130 PetriNetUnfolder]: 29/311 cut-off events. [2023-08-31 01:02:01,526 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:02:01,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 29/311 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 504 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-08-31 01:02:01,534 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-08-31 01:02:10,021 INFO L134 LiptonReduction]: Checked pairs total: 16261 [2023-08-31 01:02:10,022 INFO L136 LiptonReduction]: Total number of compositions: 353 [2023-08-31 01:02:10,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:02:10,039 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;@5c82b8b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:02:10,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:02:10,063 INFO L130 PetriNetUnfolder]: 8/35 cut-off events. [2023-08-31 01:02:10,064 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:02:10,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:10,065 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] [2023-08-31 01:02:10,066 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 1 more)] === [2023-08-31 01:02:10,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:10,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1811737217, now seen corresponding path program 1 times [2023-08-31 01:02:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:10,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75894106] [2023-08-31 01:02:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:11,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:11,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:11,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75894106] [2023-08-31 01:02:11,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75894106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:02:11,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:02:11,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:02:11,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692354200] [2023-08-31 01:02:11,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:11,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:02:11,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:11,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:02:11,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:02:11,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-31 01:02:11,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 90 flow. Second operand has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:11,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:11,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-31 01:02:11,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:12,736 INFO L130 PetriNetUnfolder]: 1997/2838 cut-off events. [2023-08-31 01:02:12,737 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2023-08-31 01:02:12,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5910 conditions, 2838 events. 1997/2838 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11887 event pairs, 166 based on Foata normal form. 1/2235 useless extension candidates. Maximal degree in co-relation 2936. Up to 1149 conditions per place. [2023-08-31 01:02:12,754 INFO L137 encePairwiseOnDemand]: 665/677 looper letters, 118 selfloop transitions, 14 changer transitions 4/136 dead transitions. [2023-08-31 01:02:12,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 136 transitions, 607 flow [2023-08-31 01:02:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:02:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:02:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2849 transitions. [2023-08-31 01:02:12,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42082717872968983 [2023-08-31 01:02:12,778 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2849 transitions. [2023-08-31 01:02:12,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2849 transitions. [2023-08-31 01:02:12,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:12,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2849 transitions. [2023-08-31 01:02:12,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 284.9) internal successors, (2849), 10 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:12,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:12,813 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:12,815 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 90 flow. Second operand 10 states and 2849 transitions. [2023-08-31 01:02:12,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 136 transitions, 607 flow [2023-08-31 01:02:12,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 136 transitions, 565 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:02:12,824 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 171 flow [2023-08-31 01:02:12,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=171, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2023-08-31 01:02:12,829 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-08-31 01:02:12,829 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 171 flow [2023-08-31 01:02:12,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:12,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:12,832 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] [2023-08-31 01:02:12,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:02:12,834 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 1 more)] === [2023-08-31 01:02:12,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash 606335977, now seen corresponding path program 2 times [2023-08-31 01:02:12,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:12,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108617804] [2023-08-31 01:02:12,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:12,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:13,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:13,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108617804] [2023-08-31 01:02:13,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108617804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:02:13,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:02:13,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:02:13,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663878383] [2023-08-31 01:02:13,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:13,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:02:13,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:13,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:02:13,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:02:14,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-31 01:02:14,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 171 flow. Second operand has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:14,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:14,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-31 01:02:14,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:14,810 INFO L130 PetriNetUnfolder]: 2067/2969 cut-off events. [2023-08-31 01:02:14,810 INFO L131 PetriNetUnfolder]: For 672/672 co-relation queries the response was YES. [2023-08-31 01:02:14,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6719 conditions, 2969 events. 2067/2969 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12863 event pairs, 168 based on Foata normal form. 1/2438 useless extension candidates. Maximal degree in co-relation 6694. Up to 1149 conditions per place. [2023-08-31 01:02:14,824 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 112 selfloop transitions, 16 changer transitions 8/136 dead transitions. [2023-08-31 01:02:14,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 136 transitions, 643 flow [2023-08-31 01:02:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:02:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:02:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2846 transitions. [2023-08-31 01:02:14,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420384047267356 [2023-08-31 01:02:14,831 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2846 transitions. [2023-08-31 01:02:14,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2846 transitions. [2023-08-31 01:02:14,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:14,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2846 transitions. [2023-08-31 01:02:14,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 284.6) internal successors, (2846), 10 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:14,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:14,851 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:14,851 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 171 flow. Second operand 10 states and 2846 transitions. [2023-08-31 01:02:14,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 136 transitions, 643 flow [2023-08-31 01:02:14,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 136 transitions, 637 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-31 01:02:14,884 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 223 flow [2023-08-31 01:02:14,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=223, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-31 01:02:14,885 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-08-31 01:02:14,885 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 223 flow [2023-08-31 01:02:14,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:14,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:14,887 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] [2023-08-31 01:02:14,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:02:14,887 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 1 more)] === [2023-08-31 01:02:14,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash 235386122, now seen corresponding path program 1 times [2023-08-31 01:02:14,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:14,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118532502] [2023-08-31 01:02:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:14,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:15,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:15,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118532502] [2023-08-31 01:02:15,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118532502] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:15,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680516212] [2023-08-31 01:02:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:15,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:15,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:02:15,369 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) [2023-08-31 01:02:15,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 01:02:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:15,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-31 01:02:15,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:02:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:15,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:02:16,317 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:02:16,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-31 01:02:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:16,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680516212] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:16,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:02:16,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 19 [2023-08-31 01:02:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062930867] [2023-08-31 01:02:16,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:16,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:02:16,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:02:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-08-31 01:02:17,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 677 [2023-08-31 01:02:17,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 223 flow. Second operand has 9 states, 9 states have (on average 265.55555555555554) internal successors, (2390), 9 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:17,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:17,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 677 [2023-08-31 01:02:17,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:18,132 INFO L130 PetriNetUnfolder]: 3352/4807 cut-off events. [2023-08-31 01:02:18,132 INFO L131 PetriNetUnfolder]: For 2315/2315 co-relation queries the response was YES. [2023-08-31 01:02:18,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11509 conditions, 4807 events. 3352/4807 cut-off events. For 2315/2315 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22752 event pairs, 397 based on Foata normal form. 73/4028 useless extension candidates. Maximal degree in co-relation 9978. Up to 1658 conditions per place. [2023-08-31 01:02:18,153 INFO L137 encePairwiseOnDemand]: 665/677 looper letters, 163 selfloop transitions, 17 changer transitions 5/185 dead transitions. [2023-08-31 01:02:18,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 185 transitions, 930 flow [2023-08-31 01:02:18,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:02:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:02:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3603 transitions. [2023-08-31 01:02:18,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093852971253267 [2023-08-31 01:02:18,163 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3603 transitions. [2023-08-31 01:02:18,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3603 transitions. [2023-08-31 01:02:18,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:18,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3603 transitions. [2023-08-31 01:02:18,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 277.15384615384613) internal successors, (3603), 13 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:18,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:18,185 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:18,185 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 223 flow. Second operand 13 states and 3603 transitions. [2023-08-31 01:02:18,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 185 transitions, 930 flow [2023-08-31 01:02:18,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 185 transitions, 909 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-31 01:02:18,207 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 297 flow [2023-08-31 01:02:18,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=297, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2023-08-31 01:02:18,208 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2023-08-31 01:02:18,208 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 297 flow [2023-08-31 01:02:18,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 265.55555555555554) internal successors, (2390), 9 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:18,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:18,210 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] [2023-08-31 01:02:18,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-31 01:02:18,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:18,415 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 1 more)] === [2023-08-31 01:02:18,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:18,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1647439045, now seen corresponding path program 1 times [2023-08-31 01:02:18,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:18,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440220799] [2023-08-31 01:02:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:18,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:18,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:18,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440220799] [2023-08-31 01:02:18,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440220799] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:18,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500235333] [2023-08-31 01:02:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:18,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:18,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:02:18,586 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) [2023-08-31 01:02:18,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 01:02:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:18,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:02:18,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:02:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:18,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:02:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:18,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500235333] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:18,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:02:18,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-08-31 01:02:18,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648129256] [2023-08-31 01:02:18,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:18,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:02:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:18,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:02:18,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:02:19,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 677 [2023-08-31 01:02:19,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 275.2857142857143) internal successors, (1927), 7 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:19,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:19,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 677 [2023-08-31 01:02:19,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:20,021 INFO L130 PetriNetUnfolder]: 5270/7512 cut-off events. [2023-08-31 01:02:20,021 INFO L131 PetriNetUnfolder]: For 6560/6560 co-relation queries the response was YES. [2023-08-31 01:02:20,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19545 conditions, 7512 events. 5270/7512 cut-off events. For 6560/6560 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 37182 event pairs, 3093 based on Foata normal form. 1/6217 useless extension candidates. Maximal degree in co-relation 18023. Up to 4796 conditions per place. [2023-08-31 01:02:20,064 INFO L137 encePairwiseOnDemand]: 668/677 looper letters, 134 selfloop transitions, 11 changer transitions 6/151 dead transitions. [2023-08-31 01:02:20,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 151 transitions, 924 flow [2023-08-31 01:02:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:02:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:02:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2029 transitions. [2023-08-31 01:02:20,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281493986073011 [2023-08-31 01:02:20,070 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2029 transitions. [2023-08-31 01:02:20,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2029 transitions. [2023-08-31 01:02:20,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:20,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2029 transitions. [2023-08-31 01:02:20,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.85714285714283) internal successors, (2029), 7 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:20,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:20,081 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:20,082 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 297 flow. Second operand 7 states and 2029 transitions. [2023-08-31 01:02:20,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 151 transitions, 924 flow [2023-08-31 01:02:20,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 151 transitions, 873 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-31 01:02:20,122 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 330 flow [2023-08-31 01:02:20,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=330, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-08-31 01:02:20,122 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-08-31 01:02:20,123 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 330 flow [2023-08-31 01:02:20,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 275.2857142857143) internal successors, (1927), 7 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:20,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:20,124 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] [2023-08-31 01:02:20,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-31 01:02:20,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-31 01:02:20,329 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 1 more)] === [2023-08-31 01:02:20,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:20,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2003328084, now seen corresponding path program 1 times [2023-08-31 01:02:20,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:20,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151426487] [2023-08-31 01:02:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:20,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:20,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:20,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151426487] [2023-08-31 01:02:20,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151426487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:20,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060754760] [2023-08-31 01:02:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:20,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:02:20,481 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) [2023-08-31 01:02:20,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 01:02:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:20,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:02:20,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:02:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:20,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:02:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:20,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060754760] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:20,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:02:20,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2023-08-31 01:02:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310143254] [2023-08-31 01:02:20,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:20,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:02:20,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:02:20,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:02:20,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 677 [2023-08-31 01:02:20,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:20,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:20,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 677 [2023-08-31 01:02:20,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:21,902 INFO L130 PetriNetUnfolder]: 5428/7763 cut-off events. [2023-08-31 01:02:21,902 INFO L131 PetriNetUnfolder]: For 6141/6141 co-relation queries the response was YES. [2023-08-31 01:02:21,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20447 conditions, 7763 events. 5428/7763 cut-off events. For 6141/6141 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 38922 event pairs, 3239 based on Foata normal form. 1/6442 useless extension candidates. Maximal degree in co-relation 18869. Up to 4536 conditions per place. [2023-08-31 01:02:21,956 INFO L137 encePairwiseOnDemand]: 667/677 looper letters, 127 selfloop transitions, 11 changer transitions 7/145 dead transitions. [2023-08-31 01:02:21,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 145 transitions, 881 flow [2023-08-31 01:02:21,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:02:21,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:02:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2028 transitions. [2023-08-31 01:02:21,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4279383836252374 [2023-08-31 01:02:21,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2028 transitions. [2023-08-31 01:02:21,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2028 transitions. [2023-08-31 01:02:21,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:21,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2028 transitions. [2023-08-31 01:02:21,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.7142857142857) internal successors, (2028), 7 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:21,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:21,979 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:21,979 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 330 flow. Second operand 7 states and 2028 transitions. [2023-08-31 01:02:21,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 145 transitions, 881 flow [2023-08-31 01:02:22,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 145 transitions, 869 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-31 01:02:22,021 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 359 flow [2023-08-31 01:02:22,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2023-08-31 01:02:22,022 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2023-08-31 01:02:22,023 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 359 flow [2023-08-31 01:02:22,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:22,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:22,024 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] [2023-08-31 01:02:22,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 01:02:22,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:22,230 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 1 more)] === [2023-08-31 01:02:22,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash -105723106, now seen corresponding path program 2 times [2023-08-31 01:02:22,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:22,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712022733] [2023-08-31 01:02:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:22,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:22,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712022733] [2023-08-31 01:02:22,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712022733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:22,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976602685] [2023-08-31 01:02:22,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:02:22,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:22,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:02:22,738 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) [2023-08-31 01:02:22,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 01:02:22,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 01:02:22,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:02:22,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-31 01:02:22,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:02:23,224 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:02:23,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 107 [2023-08-31 01:02:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:02:23,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:02:23,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976602685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:02:23,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:02:23,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-08-31 01:02:23,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298931757] [2023-08-31 01:02:23,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:23,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:02:23,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:02:23,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:02:23,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-31 01:02:23,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 359 flow. Second operand has 9 states, 9 states have (on average 273.55555555555554) internal successors, (2462), 9 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:23,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:23,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-31 01:02:23,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:25,373 INFO L130 PetriNetUnfolder]: 7122/10386 cut-off events. [2023-08-31 01:02:25,373 INFO L131 PetriNetUnfolder]: For 9452/9452 co-relation queries the response was YES. [2023-08-31 01:02:25,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27410 conditions, 10386 events. 7122/10386 cut-off events. For 9452/9452 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 57636 event pairs, 1750 based on Foata normal form. 89/8681 useless extension candidates. Maximal degree in co-relation 24358. Up to 4154 conditions per place. [2023-08-31 01:02:25,430 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 229 selfloop transitions, 35 changer transitions 11/275 dead transitions. [2023-08-31 01:02:25,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 275 transitions, 1632 flow [2023-08-31 01:02:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 01:02:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 01:02:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4314 transitions. [2023-08-31 01:02:25,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42481536189069424 [2023-08-31 01:02:25,442 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4314 transitions. [2023-08-31 01:02:25,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4314 transitions. [2023-08-31 01:02:25,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:25,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4314 transitions. [2023-08-31 01:02:25,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 287.6) internal successors, (4314), 15 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:25,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:25,467 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:25,467 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 359 flow. Second operand 15 states and 4314 transitions. [2023-08-31 01:02:25,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 275 transitions, 1632 flow [2023-08-31 01:02:25,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 275 transitions, 1616 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-31 01:02:25,511 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 692 flow [2023-08-31 01:02:25,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=692, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2023-08-31 01:02:25,512 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 62 predicate places. [2023-08-31 01:02:25,512 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 692 flow [2023-08-31 01:02:25,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 273.55555555555554) internal successors, (2462), 9 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:25,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:25,513 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] [2023-08-31 01:02:25,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 01:02:25,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:25,714 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 1 more)] === [2023-08-31 01:02:25,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:25,714 INFO L85 PathProgramCache]: Analyzing trace with hash -964485474, now seen corresponding path program 3 times [2023-08-31 01:02:25,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:25,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741244693] [2023-08-31 01:02:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:25,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:26,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741244693] [2023-08-31 01:02:26,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741244693] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:26,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221746239] [2023-08-31 01:02:26,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:02:26,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:26,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:02:26,197 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) [2023-08-31 01:02:26,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 01:02:26,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 01:02:26,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:02:26,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-31 01:02:26,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:02:26,685 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:02:26,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 107 [2023-08-31 01:02:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:02:26,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:02:26,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221746239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:02:26,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:02:26,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-08-31 01:02:26,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254879008] [2023-08-31 01:02:26,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:26,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:02:26,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:26,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:02:26,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:02:27,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 677 [2023-08-31 01:02:27,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 692 flow. Second operand has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:27,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:27,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 677 [2023-08-31 01:02:27,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:28,856 INFO L130 PetriNetUnfolder]: 7540/11054 cut-off events. [2023-08-31 01:02:28,856 INFO L131 PetriNetUnfolder]: For 19752/19752 co-relation queries the response was YES. [2023-08-31 01:02:28,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31460 conditions, 11054 events. 7540/11054 cut-off events. For 19752/19752 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 62045 event pairs, 1762 based on Foata normal form. 197/9281 useless extension candidates. Maximal degree in co-relation 29815. Up to 4154 conditions per place. [2023-08-31 01:02:28,918 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 212 selfloop transitions, 43 changer transitions 15/270 dead transitions. [2023-08-31 01:02:28,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 270 transitions, 1755 flow [2023-08-31 01:02:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 01:02:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 01:02:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4280 transitions. [2023-08-31 01:02:28,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42146725750861647 [2023-08-31 01:02:28,930 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4280 transitions. [2023-08-31 01:02:28,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4280 transitions. [2023-08-31 01:02:28,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:28,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4280 transitions. [2023-08-31 01:02:28,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 285.3333333333333) internal successors, (4280), 15 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:28,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:28,958 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 677.0) internal successors, (10832), 16 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:28,958 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 692 flow. Second operand 15 states and 4280 transitions. [2023-08-31 01:02:28,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 270 transitions, 1755 flow [2023-08-31 01:02:29,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 270 transitions, 1705 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-31 01:02:29,085 INFO L231 Difference]: Finished difference. Result has 118 places, 103 transitions, 869 flow [2023-08-31 01:02:29,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=869, PETRI_PLACES=118, PETRI_TRANSITIONS=103} [2023-08-31 01:02:29,086 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 80 predicate places. [2023-08-31 01:02:29,087 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 103 transitions, 869 flow [2023-08-31 01:02:29,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:29,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:29,088 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] [2023-08-31 01:02:29,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 01:02:29,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:29,294 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 1 more)] === [2023-08-31 01:02:29,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:29,294 INFO L85 PathProgramCache]: Analyzing trace with hash 927259102, now seen corresponding path program 4 times [2023-08-31 01:02:29,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:29,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010459548] [2023-08-31 01:02:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:29,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010459548] [2023-08-31 01:02:30,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010459548] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444273475] [2023-08-31 01:02:30,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:02:30,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:30,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:02:30,093 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) [2023-08-31 01:02:30,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 01:02:30,211 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:02:30,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:02:30,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-31 01:02:30,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:02:30,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:02:30,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 134 [2023-08-31 01:02:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:31,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:02:31,887 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:02:31,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-31 01:02:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:32,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444273475] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:32,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:02:32,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 22 [2023-08-31 01:02:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671208363] [2023-08-31 01:02:32,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:32,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:02:32,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:32,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:02:32,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-08-31 01:02:32,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 677 [2023-08-31 01:02:32,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 103 transitions, 869 flow. Second operand has 9 states, 9 states have (on average 258.55555555555554) internal successors, (2327), 9 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:32,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:32,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 677 [2023-08-31 01:02:32,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:35,410 INFO L130 PetriNetUnfolder]: 18154/26002 cut-off events. [2023-08-31 01:02:35,411 INFO L131 PetriNetUnfolder]: For 80076/80076 co-relation queries the response was YES. [2023-08-31 01:02:35,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81060 conditions, 26002 events. 18154/26002 cut-off events. For 80076/80076 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 160797 event pairs, 1836 based on Foata normal form. 2/21398 useless extension candidates. Maximal degree in co-relation 78458. Up to 8287 conditions per place. [2023-08-31 01:02:35,827 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 221 selfloop transitions, 120 changer transitions 1/342 dead transitions. [2023-08-31 01:02:35,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 342 transitions, 2871 flow [2023-08-31 01:02:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 01:02:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 01:02:35,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3792 transitions. [2023-08-31 01:02:35,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40008440599282546 [2023-08-31 01:02:35,840 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3792 transitions. [2023-08-31 01:02:35,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3792 transitions. [2023-08-31 01:02:35,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:35,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3792 transitions. [2023-08-31 01:02:35,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 270.85714285714283) internal successors, (3792), 14 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:35,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 677.0) internal successors, (10155), 15 states have internal predecessors, (10155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:35,866 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 677.0) internal successors, (10155), 15 states have internal predecessors, (10155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:35,866 INFO L175 Difference]: Start difference. First operand has 118 places, 103 transitions, 869 flow. Second operand 14 states and 3792 transitions. [2023-08-31 01:02:35,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 342 transitions, 2871 flow [2023-08-31 01:02:36,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 342 transitions, 2738 flow, removed 35 selfloop flow, removed 8 redundant places. [2023-08-31 01:02:36,713 INFO L231 Difference]: Finished difference. Result has 131 places, 211 transitions, 2108 flow [2023-08-31 01:02:36,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2108, PETRI_PLACES=131, PETRI_TRANSITIONS=211} [2023-08-31 01:02:36,714 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 93 predicate places. [2023-08-31 01:02:36,716 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 211 transitions, 2108 flow [2023-08-31 01:02:36,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 258.55555555555554) internal successors, (2327), 9 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:36,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:36,717 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] [2023-08-31 01:02:36,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 01:02:36,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:36,923 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 1 more)] === [2023-08-31 01:02:36,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash 158436876, now seen corresponding path program 5 times [2023-08-31 01:02:36,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:36,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228218437] [2023-08-31 01:02:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:36,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:37,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228218437] [2023-08-31 01:02:37,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228218437] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:37,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144807068] [2023-08-31 01:02:37,410 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:02:37,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:37,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:02:37,413 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) [2023-08-31 01:02:37,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 01:02:37,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:02:37,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:02:37,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-31 01:02:37,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:02:37,902 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:02:37,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 160 treesize of output 141 [2023-08-31 01:02:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:37,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:02:38,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:02:38,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-31 01:02:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:38,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144807068] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:38,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:02:38,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 19 [2023-08-31 01:02:38,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559301596] [2023-08-31 01:02:38,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:38,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:02:38,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:02:38,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-08-31 01:02:39,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 677 [2023-08-31 01:02:39,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 211 transitions, 2108 flow. Second operand has 9 states, 9 states have (on average 265.55555555555554) internal successors, (2390), 9 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:39,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:39,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 677 [2023-08-31 01:02:39,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:42,213 INFO L130 PetriNetUnfolder]: 18154/25999 cut-off events. [2023-08-31 01:02:42,214 INFO L131 PetriNetUnfolder]: For 97010/97010 co-relation queries the response was YES. [2023-08-31 01:02:42,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98170 conditions, 25999 events. 18154/25999 cut-off events. For 97010/97010 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 160461 event pairs, 3176 based on Foata normal form. 3/23918 useless extension candidates. Maximal degree in co-relation 96574. Up to 14851 conditions per place. [2023-08-31 01:02:42,393 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 298 selfloop transitions, 42 changer transitions 10/350 dead transitions. [2023-08-31 01:02:42,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 350 transitions, 3372 flow [2023-08-31 01:02:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:02:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:02:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3600 transitions. [2023-08-31 01:02:42,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090444267696853 [2023-08-31 01:02:42,401 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3600 transitions. [2023-08-31 01:02:42,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3600 transitions. [2023-08-31 01:02:42,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:42,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3600 transitions. [2023-08-31 01:02:42,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 276.9230769230769) internal successors, (3600), 13 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:42,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:42,418 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:42,419 INFO L175 Difference]: Start difference. First operand has 131 places, 211 transitions, 2108 flow. Second operand 13 states and 3600 transitions. [2023-08-31 01:02:42,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 350 transitions, 3372 flow [2023-08-31 01:02:43,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 350 transitions, 3315 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-31 01:02:43,523 INFO L231 Difference]: Finished difference. Result has 142 places, 210 transitions, 2136 flow [2023-08-31 01:02:43,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2136, PETRI_PLACES=142, PETRI_TRANSITIONS=210} [2023-08-31 01:02:43,524 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2023-08-31 01:02:43,524 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 210 transitions, 2136 flow [2023-08-31 01:02:43,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 265.55555555555554) internal successors, (2390), 9 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:43,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:43,525 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] [2023-08-31 01:02:43,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-31 01:02:43,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:43,730 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 1 more)] === [2023-08-31 01:02:43,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:43,730 INFO L85 PathProgramCache]: Analyzing trace with hash -671402008, now seen corresponding path program 1 times [2023-08-31 01:02:43,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:43,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011581507] [2023-08-31 01:02:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:43,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:02:43,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:43,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011581507] [2023-08-31 01:02:43,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011581507] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:43,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335037196] [2023-08-31 01:02:43,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:43,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:43,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:02:43,877 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) [2023-08-31 01:02:43,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 01:02:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:43,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:02:43,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:02:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:44,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:02:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:44,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335037196] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:44,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:02:44,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 6] total 12 [2023-08-31 01:02:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138229818] [2023-08-31 01:02:44,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:44,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:02:44,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:44,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:02:44,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:02:44,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-31 01:02:44,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 210 transitions, 2136 flow. Second operand has 7 states, 7 states have (on average 274.42857142857144) internal successors, (1921), 7 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:44,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:44,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-31 01:02:44,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:47,786 INFO L130 PetriNetUnfolder]: 19128/27437 cut-off events. [2023-08-31 01:02:47,786 INFO L131 PetriNetUnfolder]: For 109142/109142 co-relation queries the response was YES. [2023-08-31 01:02:47,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102922 conditions, 27437 events. 19128/27437 cut-off events. For 109142/109142 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 173177 event pairs, 4872 based on Foata normal form. 0/25353 useless extension candidates. Maximal degree in co-relation 101271. Up to 8897 conditions per place. [2023-08-31 01:02:47,963 INFO L137 encePairwiseOnDemand]: 667/677 looper letters, 486 selfloop transitions, 24 changer transitions 6/516 dead transitions. [2023-08-31 01:02:47,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 516 transitions, 5474 flow [2023-08-31 01:02:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:02:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:02:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2878 transitions. [2023-08-31 01:02:47,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42511078286558346 [2023-08-31 01:02:47,972 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2878 transitions. [2023-08-31 01:02:47,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2878 transitions. [2023-08-31 01:02:47,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:47,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2878 transitions. [2023-08-31 01:02:47,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 287.8) internal successors, (2878), 10 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:47,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:47,982 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:47,982 INFO L175 Difference]: Start difference. First operand has 142 places, 210 transitions, 2136 flow. Second operand 10 states and 2878 transitions. [2023-08-31 01:02:47,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 516 transitions, 5474 flow [2023-08-31 01:02:48,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 516 transitions, 5344 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-31 01:02:48,419 INFO L231 Difference]: Finished difference. Result has 144 places, 216 transitions, 2157 flow [2023-08-31 01:02:48,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2157, PETRI_PLACES=144, PETRI_TRANSITIONS=216} [2023-08-31 01:02:48,420 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 106 predicate places. [2023-08-31 01:02:48,420 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 216 transitions, 2157 flow [2023-08-31 01:02:48,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 274.42857142857144) internal successors, (1921), 7 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:48,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:48,421 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] [2023-08-31 01:02:48,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 01:02:48,621 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,SelfDestructingSolverStorable9 [2023-08-31 01:02:48,622 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 1 more)] === [2023-08-31 01:02:48,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash -143631792, now seen corresponding path program 1 times [2023-08-31 01:02:48,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:48,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491602595] [2023-08-31 01:02:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:48,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:48,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491602595] [2023-08-31 01:02:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491602595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:02:48,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:02:48,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:02:48,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151428769] [2023-08-31 01:02:48,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:48,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:02:48,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:48,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:02:48,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:02:48,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 677 [2023-08-31 01:02:48,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 216 transitions, 2157 flow. Second operand has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:48,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:48,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 677 [2023-08-31 01:02:48,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:50,979 INFO L130 PetriNetUnfolder]: 10902/15866 cut-off events. [2023-08-31 01:02:50,979 INFO L131 PetriNetUnfolder]: For 66763/66763 co-relation queries the response was YES. [2023-08-31 01:02:51,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62778 conditions, 15866 events. 10902/15866 cut-off events. For 66763/66763 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 92217 event pairs, 4879 based on Foata normal form. 572/16438 useless extension candidates. Maximal degree in co-relation 62201. Up to 11427 conditions per place. [2023-08-31 01:02:51,066 INFO L137 encePairwiseOnDemand]: 669/677 looper letters, 196 selfloop transitions, 13 changer transitions 54/263 dead transitions. [2023-08-31 01:02:51,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 263 transitions, 2636 flow [2023-08-31 01:02:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:02:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:02:51,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2086 transitions. [2023-08-31 01:02:51,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401772525849335 [2023-08-31 01:02:51,068 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2086 transitions. [2023-08-31 01:02:51,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2086 transitions. [2023-08-31 01:02:51,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:51,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2086 transitions. [2023-08-31 01:02:51,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:51,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:51,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:51,074 INFO L175 Difference]: Start difference. First operand has 144 places, 216 transitions, 2157 flow. Second operand 7 states and 2086 transitions. [2023-08-31 01:02:51,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 263 transitions, 2636 flow [2023-08-31 01:02:51,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 263 transitions, 2398 flow, removed 71 selfloop flow, removed 11 redundant places. [2023-08-31 01:02:51,425 INFO L231 Difference]: Finished difference. Result has 143 places, 131 transitions, 1030 flow [2023-08-31 01:02:51,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1030, PETRI_PLACES=143, PETRI_TRANSITIONS=131} [2023-08-31 01:02:51,425 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2023-08-31 01:02:51,425 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 131 transitions, 1030 flow [2023-08-31 01:02:51,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:51,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:51,426 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] [2023-08-31 01:02:51,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 01:02:51,426 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 1 more)] === [2023-08-31 01:02:51,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:51,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1576177570, now seen corresponding path program 1 times [2023-08-31 01:02:51,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:51,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027534523] [2023-08-31 01:02:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:51,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:02:51,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:51,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027534523] [2023-08-31 01:02:51,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027534523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:02:51,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:02:51,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:02:51,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944338769] [2023-08-31 01:02:51,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:51,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:02:51,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:51,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:02:51,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:02:51,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 677 [2023-08-31 01:02:51,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:51,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:51,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 677 [2023-08-31 01:02:51,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:53,176 INFO L130 PetriNetUnfolder]: 6934/9959 cut-off events. [2023-08-31 01:02:53,177 INFO L131 PetriNetUnfolder]: For 42926/42926 co-relation queries the response was YES. [2023-08-31 01:02:53,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40103 conditions, 9959 events. 6934/9959 cut-off events. For 42926/42926 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 51881 event pairs, 3324 based on Foata normal form. 192/10151 useless extension candidates. Maximal degree in co-relation 40054. Up to 7795 conditions per place. [2023-08-31 01:02:53,226 INFO L137 encePairwiseOnDemand]: 671/677 looper letters, 106 selfloop transitions, 4 changer transitions 126/236 dead transitions. [2023-08-31 01:02:53,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 236 transitions, 2116 flow [2023-08-31 01:02:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:02:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:02:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2080 transitions. [2023-08-31 01:02:53,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43891116269255115 [2023-08-31 01:02:53,229 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2080 transitions. [2023-08-31 01:02:53,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2080 transitions. [2023-08-31 01:02:53,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:53,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2080 transitions. [2023-08-31 01:02:53,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:53,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:53,234 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:53,234 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 1030 flow. Second operand 7 states and 2080 transitions. [2023-08-31 01:02:53,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 236 transitions, 2116 flow [2023-08-31 01:02:53,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 236 transitions, 1895 flow, removed 83 selfloop flow, removed 19 redundant places. [2023-08-31 01:02:53,793 INFO L231 Difference]: Finished difference. Result has 103 places, 110 transitions, 742 flow [2023-08-31 01:02:53,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=103, PETRI_TRANSITIONS=110} [2023-08-31 01:02:53,794 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2023-08-31 01:02:53,794 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 110 transitions, 742 flow [2023-08-31 01:02:53,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:53,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:53,795 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] [2023-08-31 01:02:53,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 01:02:53,795 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 1 more)] === [2023-08-31 01:02:53,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1200551145, now seen corresponding path program 1 times [2023-08-31 01:02:53,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:53,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351501786] [2023-08-31 01:02:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:02:53,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:53,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351501786] [2023-08-31 01:02:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351501786] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:02:53,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:02:53,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:02:53,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570232159] [2023-08-31 01:02:53,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:02:53,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:02:53,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:02:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:02:54,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 677 [2023-08-31 01:02:54,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 110 transitions, 742 flow. Second operand has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:54,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:54,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 677 [2023-08-31 01:02:54,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:02:54,815 INFO L130 PetriNetUnfolder]: 4761/6778 cut-off events. [2023-08-31 01:02:54,816 INFO L131 PetriNetUnfolder]: For 10582/10582 co-relation queries the response was YES. [2023-08-31 01:02:54,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22541 conditions, 6778 events. 4761/6778 cut-off events. For 10582/10582 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32066 event pairs, 2380 based on Foata normal form. 72/6850 useless extension candidates. Maximal degree in co-relation 22505. Up to 6062 conditions per place. [2023-08-31 01:02:54,840 INFO L137 encePairwiseOnDemand]: 669/677 looper letters, 83 selfloop transitions, 2 changer transitions 80/165 dead transitions. [2023-08-31 01:02:54,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 165 transitions, 1272 flow [2023-08-31 01:02:54,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:02:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:02:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2063 transitions. [2023-08-31 01:02:54,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43532390799746784 [2023-08-31 01:02:54,843 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2063 transitions. [2023-08-31 01:02:54,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2063 transitions. [2023-08-31 01:02:54,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:02:54,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2063 transitions. [2023-08-31 01:02:54,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 294.7142857142857) internal successors, (2063), 7 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:54,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:54,849 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 677.0) internal successors, (5416), 8 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:54,849 INFO L175 Difference]: Start difference. First operand has 103 places, 110 transitions, 742 flow. Second operand 7 states and 2063 transitions. [2023-08-31 01:02:54,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 165 transitions, 1272 flow [2023-08-31 01:02:54,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 1241 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-31 01:02:54,872 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 497 flow [2023-08-31 01:02:54,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=497, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2023-08-31 01:02:54,873 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places. [2023-08-31 01:02:54,873 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 497 flow [2023-08-31 01:02:54,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:54,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:02:54,873 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] [2023-08-31 01:02:54,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 01:02:54,874 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 1 more)] === [2023-08-31 01:02:54,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:02:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1872973148, now seen corresponding path program 1 times [2023-08-31 01:02:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:02:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495054895] [2023-08-31 01:02:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:54,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:02:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:02:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:02:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495054895] [2023-08-31 01:02:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495054895] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:02:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988313282] [2023-08-31 01:02:55,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:02:55,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:02:55,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:02:55,280 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) [2023-08-31 01:02:55,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 01:02:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:02:55,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-31 01:02:55,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:02:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:55,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:02:56,171 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:02:56,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-31 01:02:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:02:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988313282] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:02:56,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:02:56,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-08-31 01:02:56,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930659524] [2023-08-31 01:02:56,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:02:56,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-31 01:02:56,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:02:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-31 01:02:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2023-08-31 01:02:58,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 677 [2023-08-31 01:02:58,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 497 flow. Second operand has 28 states, 28 states have (on average 262.7857142857143) internal successors, (7358), 28 states have internal predecessors, (7358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:02:58,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:02:58,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 677 [2023-08-31 01:02:58,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:01,130 INFO L130 PetriNetUnfolder]: 10737/15267 cut-off events. [2023-08-31 01:03:01,130 INFO L131 PetriNetUnfolder]: For 21825/21825 co-relation queries the response was YES. [2023-08-31 01:03:01,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49510 conditions, 15267 events. 10737/15267 cut-off events. For 21825/21825 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 84455 event pairs, 1064 based on Foata normal form. 447/15714 useless extension candidates. Maximal degree in co-relation 49477. Up to 3520 conditions per place. [2023-08-31 01:03:01,194 INFO L137 encePairwiseOnDemand]: 663/677 looper letters, 393 selfloop transitions, 93 changer transitions 20/506 dead transitions. [2023-08-31 01:03:01,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 506 transitions, 3365 flow [2023-08-31 01:03:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-31 01:03:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-31 01:03:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 8465 transitions. [2023-08-31 01:03:01,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40334492781245534 [2023-08-31 01:03:01,202 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 8465 transitions. [2023-08-31 01:03:01,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 8465 transitions. [2023-08-31 01:03:01,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:01,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 8465 transitions. [2023-08-31 01:03:01,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 273.06451612903226) internal successors, (8465), 31 states have internal predecessors, (8465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:01,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 677.0) internal successors, (21664), 32 states have internal predecessors, (21664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:01,228 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 677.0) internal successors, (21664), 32 states have internal predecessors, (21664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:01,228 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 497 flow. Second operand 31 states and 8465 transitions. [2023-08-31 01:03:01,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 506 transitions, 3365 flow [2023-08-31 01:03:01,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 506 transitions, 3237 flow, removed 57 selfloop flow, removed 12 redundant places. [2023-08-31 01:03:01,360 INFO L231 Difference]: Finished difference. Result has 116 places, 160 transitions, 1324 flow [2023-08-31 01:03:01,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1324, PETRI_PLACES=116, PETRI_TRANSITIONS=160} [2023-08-31 01:03:01,360 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 78 predicate places. [2023-08-31 01:03:01,360 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 160 transitions, 1324 flow [2023-08-31 01:03:01,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 262.7857142857143) internal successors, (7358), 28 states have internal predecessors, (7358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:01,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:01,361 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] [2023-08-31 01:03:01,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:01,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-31 01:03:01,562 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 1 more)] === [2023-08-31 01:03:01,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:01,562 INFO L85 PathProgramCache]: Analyzing trace with hash 691585832, now seen corresponding path program 2 times [2023-08-31 01:03:01,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:01,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238242736] [2023-08-31 01:03:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:01,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:03:01,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:01,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238242736] [2023-08-31 01:03:01,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238242736] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:01,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845180924] [2023-08-31 01:03:01,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:03:01,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:01,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:01,989 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:02,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 01:03:02,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 01:03:02,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:02,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-31 01:03:02,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:03:02,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:02,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845180924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:02,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:02,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-08-31 01:03:02,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202813101] [2023-08-31 01:03:02,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:02,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:03:02,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:02,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:03:02,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:03:02,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 677 [2023-08-31 01:03:02,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 160 transitions, 1324 flow. Second operand has 9 states, 9 states have (on average 270.8888888888889) internal successors, (2438), 9 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:02,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:02,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 677 [2023-08-31 01:03:02,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:04,284 INFO L130 PetriNetUnfolder]: 12239/17496 cut-off events. [2023-08-31 01:03:04,284 INFO L131 PetriNetUnfolder]: For 57955/57955 co-relation queries the response was YES. [2023-08-31 01:03:04,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64748 conditions, 17496 events. 12239/17496 cut-off events. For 57955/57955 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 100856 event pairs, 2508 based on Foata normal form. 206/17702 useless extension candidates. Maximal degree in co-relation 64710. Up to 7214 conditions per place. [2023-08-31 01:03:04,378 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 203 selfloop transitions, 63 changer transitions 4/270 dead transitions. [2023-08-31 01:03:04,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 270 transitions, 2410 flow [2023-08-31 01:03:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:03:04,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:03:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2827 transitions. [2023-08-31 01:03:04,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175775480059084 [2023-08-31 01:03:04,381 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2827 transitions. [2023-08-31 01:03:04,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2827 transitions. [2023-08-31 01:03:04,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:04,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2827 transitions. [2023-08-31 01:03:04,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 282.7) internal successors, (2827), 10 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:04,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:04,390 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:04,390 INFO L175 Difference]: Start difference. First operand has 116 places, 160 transitions, 1324 flow. Second operand 10 states and 2827 transitions. [2023-08-31 01:03:04,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 270 transitions, 2410 flow [2023-08-31 01:03:04,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 270 transitions, 2307 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-08-31 01:03:04,752 INFO L231 Difference]: Finished difference. Result has 123 places, 175 transitions, 1578 flow [2023-08-31 01:03:04,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1578, PETRI_PLACES=123, PETRI_TRANSITIONS=175} [2023-08-31 01:03:04,753 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 85 predicate places. [2023-08-31 01:03:04,753 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 175 transitions, 1578 flow [2023-08-31 01:03:04,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 270.8888888888889) internal successors, (2438), 9 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:04,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:04,753 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] [2023-08-31 01:03:04,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-31 01:03:04,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-31 01:03:04,954 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 1 more)] === [2023-08-31 01:03:04,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1361462932, now seen corresponding path program 3 times [2023-08-31 01:03:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:04,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890134770] [2023-08-31 01:03:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:04,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:05,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:05,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890134770] [2023-08-31 01:03:05,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890134770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:05,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142595507] [2023-08-31 01:03:05,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:03:05,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:05,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:05,661 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:05,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-31 01:03:05,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 01:03:05,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:05,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-31 01:03:05,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:03:06,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:06,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142595507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:06,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:06,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2023-08-31 01:03:06,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718148872] [2023-08-31 01:03:06,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:06,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:03:06,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:06,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:03:06,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-08-31 01:03:06,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 677 [2023-08-31 01:03:06,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 175 transitions, 1578 flow. Second operand has 9 states, 9 states have (on average 270.8888888888889) internal successors, (2438), 9 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:06,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:06,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 677 [2023-08-31 01:03:06,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:08,221 INFO L130 PetriNetUnfolder]: 12635/18266 cut-off events. [2023-08-31 01:03:08,221 INFO L131 PetriNetUnfolder]: For 82008/82008 co-relation queries the response was YES. [2023-08-31 01:03:08,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67964 conditions, 18266 events. 12635/18266 cut-off events. For 82008/82008 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 108682 event pairs, 2664 based on Foata normal form. 550/18816 useless extension candidates. Maximal degree in co-relation 67924. Up to 7214 conditions per place. [2023-08-31 01:03:08,328 INFO L137 encePairwiseOnDemand]: 666/677 looper letters, 226 selfloop transitions, 62 changer transitions 5/293 dead transitions. [2023-08-31 01:03:08,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 293 transitions, 2880 flow [2023-08-31 01:03:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:03:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:03:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2825 transitions. [2023-08-31 01:03:08,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172821270310192 [2023-08-31 01:03:08,332 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2825 transitions. [2023-08-31 01:03:08,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2825 transitions. [2023-08-31 01:03:08,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:08,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2825 transitions. [2023-08-31 01:03:08,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 282.5) internal successors, (2825), 10 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:08,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:08,338 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 677.0) internal successors, (7447), 11 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:08,338 INFO L175 Difference]: Start difference. First operand has 123 places, 175 transitions, 1578 flow. Second operand 10 states and 2825 transitions. [2023-08-31 01:03:08,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 293 transitions, 2880 flow [2023-08-31 01:03:08,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 293 transitions, 2749 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-31 01:03:08,799 INFO L231 Difference]: Finished difference. Result has 130 places, 195 transitions, 1969 flow [2023-08-31 01:03:08,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1969, PETRI_PLACES=130, PETRI_TRANSITIONS=195} [2023-08-31 01:03:08,800 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-08-31 01:03:08,800 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 195 transitions, 1969 flow [2023-08-31 01:03:08,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 270.8888888888889) internal successors, (2438), 9 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:08,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:08,801 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] [2023-08-31 01:03:08,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:09,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-31 01:03:09,002 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 1 more)] === [2023-08-31 01:03:09,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:09,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1069219752, now seen corresponding path program 4 times [2023-08-31 01:03:09,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:09,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926506007] [2023-08-31 01:03:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:09,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:03:09,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926506007] [2023-08-31 01:03:09,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926506007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963218562] [2023-08-31 01:03:09,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:03:09,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:09,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:09,433 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:09,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-31 01:03:09,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:03:09,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:09,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-31 01:03:09,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:09,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:03:09,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 160 treesize of output 141 [2023-08-31 01:03:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:03:10,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:10,971 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:03:10,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 162 [2023-08-31 01:03:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:03:11,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963218562] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:11,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:03:11,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 21 [2023-08-31 01:03:11,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636134941] [2023-08-31 01:03:11,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:11,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:03:11,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:11,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:03:11,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-08-31 01:03:11,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-31 01:03:11,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 195 transitions, 1969 flow. Second operand has 8 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:11,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:11,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-31 01:03:11,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:14,218 INFO L130 PetriNetUnfolder]: 15077/22280 cut-off events. [2023-08-31 01:03:14,219 INFO L131 PetriNetUnfolder]: For 109947/109947 co-relation queries the response was YES. [2023-08-31 01:03:14,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85603 conditions, 22280 events. 15077/22280 cut-off events. For 109947/109947 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 142753 event pairs, 592 based on Foata normal form. 2/22282 useless extension candidates. Maximal degree in co-relation 85560. Up to 8452 conditions per place. [2023-08-31 01:03:14,449 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 261 selfloop transitions, 187 changer transitions 1/449 dead transitions. [2023-08-31 01:03:14,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 449 transitions, 4776 flow [2023-08-31 01:03:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 01:03:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 01:03:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3727 transitions. [2023-08-31 01:03:14,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234746051585047 [2023-08-31 01:03:14,454 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3727 transitions. [2023-08-31 01:03:14,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3727 transitions. [2023-08-31 01:03:14,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:14,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3727 transitions. [2023-08-31 01:03:14,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 286.6923076923077) internal successors, (3727), 13 states have internal predecessors, (3727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:14,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:14,465 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 677.0) internal successors, (9478), 14 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:14,465 INFO L175 Difference]: Start difference. First operand has 130 places, 195 transitions, 1969 flow. Second operand 13 states and 3727 transitions. [2023-08-31 01:03:14,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 449 transitions, 4776 flow [2023-08-31 01:03:15,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 449 transitions, 4681 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-08-31 01:03:15,148 INFO L231 Difference]: Finished difference. Result has 144 places, 296 transitions, 3466 flow [2023-08-31 01:03:15,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3466, PETRI_PLACES=144, PETRI_TRANSITIONS=296} [2023-08-31 01:03:15,148 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 106 predicate places. [2023-08-31 01:03:15,148 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 296 transitions, 3466 flow [2023-08-31 01:03:15,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:15,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:15,149 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] [2023-08-31 01:03:15,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:15,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-31 01:03:15,355 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 1 more)] === [2023-08-31 01:03:15,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:15,355 INFO L85 PathProgramCache]: Analyzing trace with hash 755674220, now seen corresponding path program 5 times [2023-08-31 01:03:15,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:15,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797116765] [2023-08-31 01:03:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:15,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:03:15,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:15,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797116765] [2023-08-31 01:03:15,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797116765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:15,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307075092] [2023-08-31 01:03:15,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:03:15,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:15,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:15,749 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:15,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-31 01:03:15,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:03:15,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:15,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-31 01:03:15,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:16,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:16,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:03:16,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-31 01:03:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:03:16,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307075092] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:16,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:03:16,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 10] total 26 [2023-08-31 01:03:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605191050] [2023-08-31 01:03:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:16,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:03:16,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:03:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2023-08-31 01:03:17,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 677 [2023-08-31 01:03:17,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 296 transitions, 3466 flow. Second operand has 9 states, 9 states have (on average 262.8888888888889) internal successors, (2366), 9 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:17,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:17,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 677 [2023-08-31 01:03:17,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:21,097 INFO L130 PetriNetUnfolder]: 16719/25038 cut-off events. [2023-08-31 01:03:21,097 INFO L131 PetriNetUnfolder]: For 146334/146334 co-relation queries the response was YES. [2023-08-31 01:03:21,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108517 conditions, 25038 events. 16719/25038 cut-off events. For 146334/146334 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 165811 event pairs, 2106 based on Foata normal form. 4/25042 useless extension candidates. Maximal degree in co-relation 108468. Up to 7556 conditions per place. [2023-08-31 01:03:21,451 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 426 selfloop transitions, 161 changer transitions 3/590 dead transitions. [2023-08-31 01:03:21,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 590 transitions, 6874 flow [2023-08-31 01:03:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 01:03:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 01:03:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4406 transitions. [2023-08-31 01:03:21,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40675775480059084 [2023-08-31 01:03:21,456 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4406 transitions. [2023-08-31 01:03:21,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4406 transitions. [2023-08-31 01:03:21,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:21,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4406 transitions. [2023-08-31 01:03:21,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 275.375) internal successors, (4406), 16 states have internal predecessors, (4406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:21,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:21,469 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:21,470 INFO L175 Difference]: Start difference. First operand has 144 places, 296 transitions, 3466 flow. Second operand 16 states and 4406 transitions. [2023-08-31 01:03:21,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 590 transitions, 6874 flow [2023-08-31 01:03:22,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 590 transitions, 6830 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-31 01:03:22,963 INFO L231 Difference]: Finished difference. Result has 164 places, 375 transitions, 4951 flow [2023-08-31 01:03:22,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4951, PETRI_PLACES=164, PETRI_TRANSITIONS=375} [2023-08-31 01:03:22,964 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 126 predicate places. [2023-08-31 01:03:22,964 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 375 transitions, 4951 flow [2023-08-31 01:03:22,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 262.8888888888889) internal successors, (2366), 9 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:22,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:22,964 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] [2023-08-31 01:03:22,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:23,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-31 01:03:23,165 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:23,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:23,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1054811520, now seen corresponding path program 6 times [2023-08-31 01:03:23,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:23,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133240768] [2023-08-31 01:03:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:23,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:23,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:23,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133240768] [2023-08-31 01:03:23,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133240768] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:23,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951583614] [2023-08-31 01:03:23,578 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:03:23,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:23,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:23,579 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:23,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-31 01:03:23,706 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 01:03:23,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:23,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-31 01:03:23,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:23,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:24,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:03:24,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 165 [2023-08-31 01:03:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:24,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951583614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:03:24,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:03:24,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 26 [2023-08-31 01:03:24,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145951431] [2023-08-31 01:03:24,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:03:24,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-31 01:03:24,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:24,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-31 01:03:24,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2023-08-31 01:03:25,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 677 [2023-08-31 01:03:25,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 375 transitions, 4951 flow. Second operand has 28 states, 28 states have (on average 262.7857142857143) internal successors, (7358), 28 states have internal predecessors, (7358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:25,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:25,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 677 [2023-08-31 01:03:25,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:29,944 INFO L130 PetriNetUnfolder]: 16865/25290 cut-off events. [2023-08-31 01:03:29,944 INFO L131 PetriNetUnfolder]: For 177584/177584 co-relation queries the response was YES. [2023-08-31 01:03:30,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118529 conditions, 25290 events. 16865/25290 cut-off events. For 177584/177584 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 168895 event pairs, 3256 based on Foata normal form. 10/25300 useless extension candidates. Maximal degree in co-relation 118474. Up to 8146 conditions per place. [2023-08-31 01:03:30,167 INFO L137 encePairwiseOnDemand]: 664/677 looper letters, 353 selfloop transitions, 140 changer transitions 14/507 dead transitions. [2023-08-31 01:03:30,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 507 transitions, 6820 flow [2023-08-31 01:03:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 01:03:30,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 01:03:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4325 transitions. [2023-08-31 01:03:30,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39927991137370755 [2023-08-31 01:03:30,171 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4325 transitions. [2023-08-31 01:03:30,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4325 transitions. [2023-08-31 01:03:30,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:30,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4325 transitions. [2023-08-31 01:03:30,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 270.3125) internal successors, (4325), 16 states have internal predecessors, (4325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:30,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:30,185 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 677.0) internal successors, (11509), 17 states have internal predecessors, (11509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:30,185 INFO L175 Difference]: Start difference. First operand has 164 places, 375 transitions, 4951 flow. Second operand 16 states and 4325 transitions. [2023-08-31 01:03:30,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 507 transitions, 6820 flow [2023-08-31 01:03:31,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 507 transitions, 6776 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-08-31 01:03:31,495 INFO L231 Difference]: Finished difference. Result has 182 places, 376 transitions, 5478 flow [2023-08-31 01:03:31,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=4907, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5478, PETRI_PLACES=182, PETRI_TRANSITIONS=376} [2023-08-31 01:03:31,495 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 144 predicate places. [2023-08-31 01:03:31,495 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 376 transitions, 5478 flow [2023-08-31 01:03:31,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 262.7857142857143) internal successors, (7358), 28 states have internal predecessors, (7358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:31,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:31,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:31,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-31 01:03:31,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:31,697 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:31,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash -499241063, now seen corresponding path program 1 times [2023-08-31 01:03:31,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:31,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603276722] [2023-08-31 01:03:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:31,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:32,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:32,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603276722] [2023-08-31 01:03:32,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603276722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:32,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881029572] [2023-08-31 01:03:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:32,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:32,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:32,017 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:32,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-31 01:03:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:32,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:03:32,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:32,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:03:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:03:32,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881029572] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:32,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:03:32,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-08-31 01:03:32,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372477639] [2023-08-31 01:03:32,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:32,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:03:32,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:32,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:03:32,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:03:32,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 677 [2023-08-31 01:03:32,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 376 transitions, 5478 flow. Second operand has 7 states, 7 states have (on average 274.85714285714283) internal successors, (1924), 7 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:32,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:32,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 677 [2023-08-31 01:03:32,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:36,328 INFO L130 PetriNetUnfolder]: 17237/25926 cut-off events. [2023-08-31 01:03:36,328 INFO L131 PetriNetUnfolder]: For 207930/207930 co-relation queries the response was YES. [2023-08-31 01:03:36,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124287 conditions, 25926 events. 17237/25926 cut-off events. For 207930/207930 co-relation queries the response was YES. Maximal size of possible extension queue 1221. Compared 175085 event pairs, 4358 based on Foata normal form. 328/26254 useless extension candidates. Maximal degree in co-relation 124227. Up to 11214 conditions per place. [2023-08-31 01:03:36,560 INFO L137 encePairwiseOnDemand]: 669/677 looper letters, 446 selfloop transitions, 41 changer transitions 0/487 dead transitions. [2023-08-31 01:03:36,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 487 transitions, 7583 flow [2023-08-31 01:03:36,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:03:36,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:03:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2274 transitions. [2023-08-31 01:03:36,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41986706056129985 [2023-08-31 01:03:36,562 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2274 transitions. [2023-08-31 01:03:36,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2274 transitions. [2023-08-31 01:03:36,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:36,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2274 transitions. [2023-08-31 01:03:36,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 284.25) internal successors, (2274), 8 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:36,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:36,569 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:36,569 INFO L175 Difference]: Start difference. First operand has 182 places, 376 transitions, 5478 flow. Second operand 8 states and 2274 transitions. [2023-08-31 01:03:36,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 487 transitions, 7583 flow [2023-08-31 01:03:38,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 487 transitions, 7407 flow, removed 37 selfloop flow, removed 11 redundant places. [2023-08-31 01:03:38,186 INFO L231 Difference]: Finished difference. Result has 178 places, 373 transitions, 5430 flow [2023-08-31 01:03:38,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=5225, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5430, PETRI_PLACES=178, PETRI_TRANSITIONS=373} [2023-08-31 01:03:38,187 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 140 predicate places. [2023-08-31 01:03:38,187 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 373 transitions, 5430 flow [2023-08-31 01:03:38,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 274.85714285714283) internal successors, (1924), 7 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:38,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:38,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:38,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-31 01:03:38,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:38,388 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:38,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:38,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1944526485, now seen corresponding path program 1 times [2023-08-31 01:03:38,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:38,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083633271] [2023-08-31 01:03:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:38,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:03:38,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083633271] [2023-08-31 01:03:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083633271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:38,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:38,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:03:38,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331294353] [2023-08-31 01:03:38,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:38,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:03:38,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:03:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:03:39,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 677 [2023-08-31 01:03:39,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 373 transitions, 5430 flow. Second operand has 9 states, 9 states have (on average 271.0) internal successors, (2439), 9 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:39,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:39,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 677 [2023-08-31 01:03:39,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:44,464 INFO L130 PetriNetUnfolder]: 23265/35014 cut-off events. [2023-08-31 01:03:44,464 INFO L131 PetriNetUnfolder]: For 290514/290514 co-relation queries the response was YES. [2023-08-31 01:03:44,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169720 conditions, 35014 events. 23265/35014 cut-off events. For 290514/290514 co-relation queries the response was YES. Maximal size of possible extension queue 1646. Compared 249355 event pairs, 6592 based on Foata normal form. 18/35032 useless extension candidates. Maximal degree in co-relation 169661. Up to 18984 conditions per place. [2023-08-31 01:03:44,957 INFO L137 encePairwiseOnDemand]: 667/677 looper letters, 460 selfloop transitions, 19 changer transitions 362/841 dead transitions. [2023-08-31 01:03:44,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 841 transitions, 13269 flow [2023-08-31 01:03:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:03:44,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:03:44,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2539 transitions. [2023-08-31 01:03:44,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41670769735762353 [2023-08-31 01:03:44,959 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2539 transitions. [2023-08-31 01:03:44,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2539 transitions. [2023-08-31 01:03:44,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:44,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2539 transitions. [2023-08-31 01:03:44,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 282.1111111111111) internal successors, (2539), 9 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:44,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 677.0) internal successors, (6770), 10 states have internal predecessors, (6770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:44,965 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 677.0) internal successors, (6770), 10 states have internal predecessors, (6770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:44,966 INFO L175 Difference]: Start difference. First operand has 178 places, 373 transitions, 5430 flow. Second operand 9 states and 2539 transitions. [2023-08-31 01:03:44,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 841 transitions, 13269 flow [2023-08-31 01:03:47,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 841 transitions, 13263 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 01:03:47,274 INFO L231 Difference]: Finished difference. Result has 188 places, 333 transitions, 4695 flow [2023-08-31 01:03:47,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=5424, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4695, PETRI_PLACES=188, PETRI_TRANSITIONS=333} [2023-08-31 01:03:47,274 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 150 predicate places. [2023-08-31 01:03:47,275 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 333 transitions, 4695 flow [2023-08-31 01:03:47,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 271.0) internal successors, (2439), 9 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:47,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:47,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:47,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 01:03:47,275 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:47,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:47,276 INFO L85 PathProgramCache]: Analyzing trace with hash 935700835, now seen corresponding path program 2 times [2023-08-31 01:03:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:47,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022291846] [2023-08-31 01:03:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:47,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:03:47,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:47,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022291846] [2023-08-31 01:03:47,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022291846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:47,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:03:47,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:03:47,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844904421] [2023-08-31 01:03:47,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:47,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:03:47,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:47,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:03:47,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:03:47,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 677 [2023-08-31 01:03:47,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 333 transitions, 4695 flow. Second operand has 10 states, 10 states have (on average 270.7) internal successors, (2707), 10 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:47,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:47,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 677 [2023-08-31 01:03:47,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:03:53,842 INFO L130 PetriNetUnfolder]: 23699/35438 cut-off events. [2023-08-31 01:03:53,842 INFO L131 PetriNetUnfolder]: For 302948/302948 co-relation queries the response was YES. [2023-08-31 01:03:54,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181610 conditions, 35438 events. 23699/35438 cut-off events. For 302948/302948 co-relation queries the response was YES. Maximal size of possible extension queue 1769. Compared 251148 event pairs, 8552 based on Foata normal form. 8/35446 useless extension candidates. Maximal degree in co-relation 181546. Up to 23316 conditions per place. [2023-08-31 01:03:54,409 INFO L137 encePairwiseOnDemand]: 668/677 looper letters, 441 selfloop transitions, 16 changer transitions 328/785 dead transitions. [2023-08-31 01:03:54,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 785 transitions, 12455 flow [2023-08-31 01:03:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:03:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:03:54,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2259 transitions. [2023-08-31 01:03:54,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41709748892171344 [2023-08-31 01:03:54,413 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2259 transitions. [2023-08-31 01:03:54,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2259 transitions. [2023-08-31 01:03:54,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:03:54,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2259 transitions. [2023-08-31 01:03:54,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 282.375) internal successors, (2259), 8 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:54,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:54,419 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:54,419 INFO L175 Difference]: Start difference. First operand has 188 places, 333 transitions, 4695 flow. Second operand 8 states and 2259 transitions. [2023-08-31 01:03:54,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 785 transitions, 12455 flow [2023-08-31 01:03:57,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 785 transitions, 12355 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-08-31 01:03:57,270 INFO L231 Difference]: Finished difference. Result has 192 places, 334 transitions, 4743 flow [2023-08-31 01:03:57,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=4633, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4743, PETRI_PLACES=192, PETRI_TRANSITIONS=334} [2023-08-31 01:03:57,271 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 154 predicate places. [2023-08-31 01:03:57,271 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 334 transitions, 4743 flow [2023-08-31 01:03:57,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 270.7) internal successors, (2707), 10 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:57,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:03:57,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:03:57,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 01:03:57,272 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:03:57,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:03:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash 726820333, now seen corresponding path program 3 times [2023-08-31 01:03:57,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:03:57,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932205144] [2023-08-31 01:03:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:03:57,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:03:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:03:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:03:57,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:03:57,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932205144] [2023-08-31 01:03:57,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932205144] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:03:57,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418885958] [2023-08-31 01:03:57,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:03:57,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:03:57,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:03:57,733 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:03:57,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-31 01:03:57,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 01:03:57,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:03:57,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-31 01:03:57,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:03:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:03:58,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:03:58,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418885958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:03:58,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:03:58,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2023-08-31 01:03:58,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020057031] [2023-08-31 01:03:58,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:03:58,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:03:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:03:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:03:58,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-08-31 01:03:58,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 677 [2023-08-31 01:03:58,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 334 transitions, 4743 flow. Second operand has 9 states, 9 states have (on average 270.0) internal successors, (2430), 9 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:03:58,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:03:58,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 677 [2023-08-31 01:03:58,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:03,423 INFO L130 PetriNetUnfolder]: 21697/32558 cut-off events. [2023-08-31 01:04:03,423 INFO L131 PetriNetUnfolder]: For 284515/284515 co-relation queries the response was YES. [2023-08-31 01:04:03,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174013 conditions, 32558 events. 21697/32558 cut-off events. For 284515/284515 co-relation queries the response was YES. Maximal size of possible extension queue 1673. Compared 228746 event pairs, 4950 based on Foata normal form. 2/32560 useless extension candidates. Maximal degree in co-relation 173948. Up to 12346 conditions per place. [2023-08-31 01:04:03,912 INFO L137 encePairwiseOnDemand]: 668/677 looper letters, 448 selfloop transitions, 71 changer transitions 12/531 dead transitions. [2023-08-31 01:04:03,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 531 transitions, 8046 flow [2023-08-31 01:04:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:04:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:04:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2272 transitions. [2023-08-31 01:04:03,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194977843426883 [2023-08-31 01:04:03,915 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2272 transitions. [2023-08-31 01:04:03,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2272 transitions. [2023-08-31 01:04:03,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:03,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2272 transitions. [2023-08-31 01:04:03,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 284.0) internal successors, (2272), 8 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:03,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:03,921 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 677.0) internal successors, (6093), 9 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:03,921 INFO L175 Difference]: Start difference. First operand has 192 places, 334 transitions, 4743 flow. Second operand 8 states and 2272 transitions. [2023-08-31 01:04:03,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 531 transitions, 8046 flow [2023-08-31 01:04:06,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 531 transitions, 7935 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-08-31 01:04:06,330 INFO L231 Difference]: Finished difference. Result has 195 places, 363 transitions, 5602 flow [2023-08-31 01:04:06,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5602, PETRI_PLACES=195, PETRI_TRANSITIONS=363} [2023-08-31 01:04:06,330 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 157 predicate places. [2023-08-31 01:04:06,330 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 363 transitions, 5602 flow [2023-08-31 01:04:06,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 270.0) internal successors, (2430), 9 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:06,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:06,331 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] [2023-08-31 01:04:06,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-31 01:04:06,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-31 01:04:06,532 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:04:06,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1155113705, now seen corresponding path program 1 times [2023-08-31 01:04:06,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:06,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742804102] [2023-08-31 01:04:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:04:06,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:06,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742804102] [2023-08-31 01:04:06,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742804102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:04:06,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:04:06,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:04:06,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071492943] [2023-08-31 01:04:06,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:04:06,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:04:06,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:04:06,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:04:06,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:04:06,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 677 [2023-08-31 01:04:06,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 363 transitions, 5602 flow. Second operand has 5 states, 5 states have (on average 285.8) internal successors, (1429), 5 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:06,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:04:06,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 677 [2023-08-31 01:04:06,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:04:09,341 INFO L130 PetriNetUnfolder]: 11143/16972 cut-off events. [2023-08-31 01:04:09,342 INFO L131 PetriNetUnfolder]: For 175871/175871 co-relation queries the response was YES. [2023-08-31 01:04:09,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92018 conditions, 16972 events. 11143/16972 cut-off events. For 175871/175871 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 109636 event pairs, 4528 based on Foata normal form. 880/17852 useless extension candidates. Maximal degree in co-relation 91951. Up to 11715 conditions per place. [2023-08-31 01:04:09,454 INFO L137 encePairwiseOnDemand]: 672/677 looper letters, 129 selfloop transitions, 4 changer transitions 135/268 dead transitions. [2023-08-31 01:04:09,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 268 transitions, 3695 flow [2023-08-31 01:04:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:04:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:04:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1475 transitions. [2023-08-31 01:04:09,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357459379615953 [2023-08-31 01:04:09,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1475 transitions. [2023-08-31 01:04:09,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1475 transitions. [2023-08-31 01:04:09,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:04:09,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1475 transitions. [2023-08-31 01:04:09,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:09,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 677.0) internal successors, (4062), 6 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:09,466 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 677.0) internal successors, (4062), 6 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:09,466 INFO L175 Difference]: Start difference. First operand has 195 places, 363 transitions, 5602 flow. Second operand 5 states and 1475 transitions. [2023-08-31 01:04:09,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 268 transitions, 3695 flow [2023-08-31 01:04:10,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 268 transitions, 3310 flow, removed 35 selfloop flow, removed 20 redundant places. [2023-08-31 01:04:10,671 INFO L231 Difference]: Finished difference. Result has 175 places, 133 transitions, 1278 flow [2023-08-31 01:04:10,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1278, PETRI_PLACES=175, PETRI_TRANSITIONS=133} [2023-08-31 01:04:10,672 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 137 predicate places. [2023-08-31 01:04:10,672 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 133 transitions, 1278 flow [2023-08-31 01:04:10,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.8) internal successors, (1429), 5 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:04:10,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:04:10,673 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] [2023-08-31 01:04:10,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 01:04:10,673 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:04:10,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:04:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1367699374, now seen corresponding path program 1 times [2023-08-31 01:04:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:04:10,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039799656] [2023-08-31 01:04:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:10,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:04:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:04:11,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:04:11,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039799656] [2023-08-31 01:04:11,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039799656] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:04:11,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553999106] [2023-08-31 01:04:11,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:04:11,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:04:11,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:04:11,661 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:04:11,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-31 01:04:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:04:11,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-31 01:04:11,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:04:12,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 01:04:12,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 01:04:12,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 01:04:12,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:04:12,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:04:12,422 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 01:04:12,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-08-31 01:04:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:04:12,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:04:14,060 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:04:14,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 266 treesize of output 158 [2023-08-31 01:04:14,137 INFO L321 Elim1Store]: treesize reduction 15, result has 55.9 percent of original size [2023-08-31 01:04:14,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33916 treesize of output 32110 [2023-08-31 01:04:14,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:04:14,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4764 treesize of output 4500 [2023-08-31 01:04:15,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:04:15,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4476 treesize of output 4356 [2023-08-31 01:04:15,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:04:15,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4118 treesize of output 3630 [2023-08-31 01:12:42,119 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:12:42,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 67 [2023-08-31 01:12:42,163 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:12:42,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2653 treesize of output 2526 [2023-08-31 01:12:42,307 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:12:42,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1373 treesize of output 1301 [2023-08-31 01:12:42,347 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:12:42,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1046 treesize of output 927 [2023-08-31 01:12:42,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:12:42,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1149 treesize of output 1125 [2023-08-31 01:13:22,903 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:13:22,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 67 [2023-08-31 01:13:22,997 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:13:22,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38477 treesize of output 36398 [2023-08-31 01:13:23,434 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:13:23,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1373 treesize of output 1349 [2023-08-31 01:13:23,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:13:23,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1325 treesize of output 1253 [2023-08-31 01:13:23,502 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:13:23,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1014 treesize of output 895 [2023-08-31 01:13:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:13:34,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553999106] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:13:34,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:13:34,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 46 [2023-08-31 01:13:34,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589777762] [2023-08-31 01:13:34,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:13:34,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-08-31 01:13:34,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:13:34,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-08-31 01:13:34,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1963, Unknown=32, NotChecked=0, Total=2162 [2023-08-31 01:13:41,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 677 [2023-08-31 01:13:41,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 133 transitions, 1278 flow. Second operand has 47 states, 47 states have (on average 184.68085106382978) internal successors, (8680), 47 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:41,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:13:41,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 677 [2023-08-31 01:13:41,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:13:47,781 INFO L130 PetriNetUnfolder]: 22283/32058 cut-off events. [2023-08-31 01:13:47,781 INFO L131 PetriNetUnfolder]: For 287780/287780 co-relation queries the response was YES. [2023-08-31 01:13:48,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169764 conditions, 32058 events. 22283/32058 cut-off events. For 287780/287780 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 201679 event pairs, 1870 based on Foata normal form. 576/32634 useless extension candidates. Maximal degree in co-relation 169709. Up to 8390 conditions per place. [2023-08-31 01:13:48,469 INFO L137 encePairwiseOnDemand]: 657/677 looper letters, 502 selfloop transitions, 88 changer transitions 15/605 dead transitions. [2023-08-31 01:13:48,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 605 transitions, 6544 flow [2023-08-31 01:13:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-31 01:13:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-31 01:13:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4291 transitions. [2023-08-31 01:13:48,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28810259164764335 [2023-08-31 01:13:48,474 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4291 transitions. [2023-08-31 01:13:48,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4291 transitions. [2023-08-31 01:13:48,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:13:48,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4291 transitions. [2023-08-31 01:13:48,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 195.04545454545453) internal successors, (4291), 22 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:48,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 677.0) internal successors, (15571), 23 states have internal predecessors, (15571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:48,487 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 677.0) internal successors, (15571), 23 states have internal predecessors, (15571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:48,487 INFO L175 Difference]: Start difference. First operand has 175 places, 133 transitions, 1278 flow. Second operand 22 states and 4291 transitions. [2023-08-31 01:13:48,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 605 transitions, 6544 flow [2023-08-31 01:13:58,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 605 transitions, 6003 flow, removed 225 selfloop flow, removed 18 redundant places. [2023-08-31 01:13:58,681 INFO L231 Difference]: Finished difference. Result has 147 places, 198 transitions, 2110 flow [2023-08-31 01:13:58,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2110, PETRI_PLACES=147, PETRI_TRANSITIONS=198} [2023-08-31 01:13:58,682 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 109 predicate places. [2023-08-31 01:13:58,682 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 198 transitions, 2110 flow [2023-08-31 01:13:58,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 184.68085106382978) internal successors, (8680), 47 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:13:58,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:13:58,683 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] [2023-08-31 01:13:58,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-31 01:13:58,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:13:58,884 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:13:58,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:13:58,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1522311406, now seen corresponding path program 2 times [2023-08-31 01:13:58,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:13:58,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728492234] [2023-08-31 01:13:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:13:58,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:13:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:13:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:13:59,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:13:59,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728492234] [2023-08-31 01:13:59,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728492234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:13:59,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50178766] [2023-08-31 01:13:59,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:13:59,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:13:59,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:13:59,542 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:13:59,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-31 01:13:59,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:13:59,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:13:59,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-31 01:13:59,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:14:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:14:00,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:14:00,505 INFO L321 Elim1Store]: treesize reduction 22, result has 75.0 percent of original size [2023-08-31 01:14:00,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 74 [2023-08-31 01:14:00,566 INFO L321 Elim1Store]: treesize reduction 22, result has 75.0 percent of original size [2023-08-31 01:14:00,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 74 [2023-08-31 01:14:00,744 INFO L321 Elim1Store]: treesize reduction 26, result has 87.3 percent of original size [2023-08-31 01:14:00,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 200 [2023-08-31 01:14:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:14:02,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50178766] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:14:02,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:14:02,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 37 [2023-08-31 01:14:02,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308092157] [2023-08-31 01:14:02,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:14:02,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-31 01:14:02,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:14:02,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-31 01:14:02,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2023-08-31 01:14:06,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 677 [2023-08-31 01:14:06,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 198 transitions, 2110 flow. Second operand has 37 states, 37 states have (on average 241.1891891891892) internal successors, (8924), 37 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:06,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:14:06,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 677 [2023-08-31 01:14:06,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:14:14,289 INFO L130 PetriNetUnfolder]: 33841/48436 cut-off events. [2023-08-31 01:14:14,290 INFO L131 PetriNetUnfolder]: For 262866/262866 co-relation queries the response was YES. [2023-08-31 01:14:14,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248537 conditions, 48436 events. 33841/48436 cut-off events. For 262866/262866 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 317935 event pairs, 9536 based on Foata normal form. 316/48752 useless extension candidates. Maximal degree in co-relation 248486. Up to 25574 conditions per place. [2023-08-31 01:14:14,917 INFO L137 encePairwiseOnDemand]: 659/677 looper letters, 474 selfloop transitions, 93 changer transitions 7/574 dead transitions. [2023-08-31 01:14:14,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 574 transitions, 6731 flow [2023-08-31 01:14:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-31 01:14:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-31 01:14:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4527 transitions. [2023-08-31 01:14:14,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37149187592319055 [2023-08-31 01:14:14,922 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4527 transitions. [2023-08-31 01:14:14,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4527 transitions. [2023-08-31 01:14:14,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:14:14,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4527 transitions. [2023-08-31 01:14:14,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 251.5) internal successors, (4527), 18 states have internal predecessors, (4527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:14,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 677.0) internal successors, (12863), 19 states have internal predecessors, (12863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:14,931 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 677.0) internal successors, (12863), 19 states have internal predecessors, (12863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:14,931 INFO L175 Difference]: Start difference. First operand has 147 places, 198 transitions, 2110 flow. Second operand 18 states and 4527 transitions. [2023-08-31 01:14:14,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 574 transitions, 6731 flow [2023-08-31 01:14:20,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 574 transitions, 6584 flow, removed 27 selfloop flow, removed 11 redundant places. [2023-08-31 01:14:20,987 INFO L231 Difference]: Finished difference. Result has 162 places, 271 transitions, 3185 flow [2023-08-31 01:14:20,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=677, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3185, PETRI_PLACES=162, PETRI_TRANSITIONS=271} [2023-08-31 01:14:20,988 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 124 predicate places. [2023-08-31 01:14:20,988 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 271 transitions, 3185 flow [2023-08-31 01:14:20,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 241.1891891891892) internal successors, (8924), 37 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:14:20,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:14:20,990 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] [2023-08-31 01:14:20,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-31 01:14:21,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:14:21,196 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:14:21,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:14:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash 31784872, now seen corresponding path program 3 times [2023-08-31 01:14:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:14:21,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593500126] [2023-08-31 01:14:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:14:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:14:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:14:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:14:22,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:14:22,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593500126] [2023-08-31 01:14:22,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593500126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:14:22,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801084290] [2023-08-31 01:14:22,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:14:22,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:14:22,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:14:22,100 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:14:22,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-31 01:14:22,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 01:14:22,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:14:22,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-31 01:14:22,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:14:22,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:14:22,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:14:22,716 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 01:14:22,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-08-31 01:14:22,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:14:22,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:14:22,783 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 01:14:22,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-08-31 01:14:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:14:23,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:14:24,171 INFO L321 Elim1Store]: treesize reduction 11, result has 95.6 percent of original size [2023-08-31 01:14:24,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 3328 treesize of output 3197 [2023-08-31 01:14:24,373 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:14:24,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1595 treesize of output 1492 [2023-08-31 01:14:24,436 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:14:24,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1467 treesize of output 1428 [2023-08-31 01:14:24,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:14:24,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1403 treesize of output 1380 [2023-08-31 01:14:24,544 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:14:24,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1371 treesize of output 1364 [2023-08-31 01:14:24,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:14:24,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1355 treesize of output 1348 [2023-08-31 01:14:24,664 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:14:24,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1339 treesize of output 1316 Killed by 15