./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/popl20-more-mts.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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 20:55:08,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 20:55:08,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 20:55:08,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 20:55:08,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 20:55:08,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 20:55:08,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 20:55:08,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 20:55:08,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 20:55:08,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 20:55:08,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 20:55:08,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 20:55:08,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 20:55:08,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 20:55:08,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 20:55:08,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 20:55:08,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 20:55:08,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 20:55:08,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 20:55:08,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 20:55:08,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 20:55:08,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 20:55:08,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 20:55:08,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 20:55:08,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 20:55:08,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 20:55:08,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 20:55:08,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 20:55:08,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 20:55:08,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 20:55:08,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 20:55:08,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 20:55:08,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 20:55:08,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 20:55:08,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 20:55:08,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 20:55:08,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 20:55:08,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 20:55:08,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 20:55:08,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 20:55:08,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 20:55:08,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 20:55:08,596 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 20:55:08,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 20:55:08,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 20:55:08,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 20:55:08,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 20:55:08,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 20:55:08,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 20:55:08,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 20:55:08,598 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 20:55:08,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 20:55:08,599 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 20:55:08,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 20:55:08,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 20:55:08,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 20:55:08,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 20:55:08,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 20:55:08,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 20:55:08,600 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 20:55:08,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 20:55:08,600 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 20:55:08,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 20:55:08,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 20:55:08,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 20:55:08,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 20:55:08,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 20:55:08,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 20:55:08,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 20:55:08,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 20:55:08,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 20:55:08,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 20:55:08,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 20:55:08,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 20:55:08,602 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 20:55:08,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 20:55:08,602 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 20:55:08,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 20:55:08,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 20:55:08,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 20:55:08,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 20:55:08,867 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 20:55:08,867 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 20:55:08,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-08-30 20:55:09,895 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 20:55:10,020 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 20:55:10,021 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-08-30 20:55:10,025 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897f54530/313cf3f51ed241f48a16078912e7b4ca/FLAGa519d6503 [2023-08-30 20:55:10,035 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897f54530/313cf3f51ed241f48a16078912e7b4ca [2023-08-30 20:55:10,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 20:55:10,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 20:55:10,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 20:55:10,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 20:55:10,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 20:55:10,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd74494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10, skipping insertion in model container [2023-08-30 20:55:10,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 20:55:10,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 20:55:10,243 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/popl20-more-mts.wvr.c[2533,2546] [2023-08-30 20:55:10,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 20:55:10,265 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 20:55:10,293 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/popl20-more-mts.wvr.c[2533,2546] [2023-08-30 20:55:10,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 20:55:10,306 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 20:55:10,306 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 20:55:10,310 INFO L208 MainTranslator]: Completed translation [2023-08-30 20:55:10,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10 WrapperNode [2023-08-30 20:55:10,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 20:55:10,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 20:55:10,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 20:55:10,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 20:55:10,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,359 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 228 [2023-08-30 20:55:10,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 20:55:10,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 20:55:10,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 20:55:10,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 20:55:10,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,394 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 20:55:10,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 20:55:10,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 20:55:10,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 20:55:10,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 20:55:10,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:10,433 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) [2023-08-30 20:55:10,454 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 [2023-08-30 20:55:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 20:55:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 20:55:10,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 20:55:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 20:55:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 20:55:10,461 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 20:55:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 20:55:10,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 20:55:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 20:55:10,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 20:55:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 20:55:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 20:55:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 20:55:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 20:55:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 20:55:10,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 20:55:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 20:55:10,463 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 20:55:10,579 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 20:55:10,580 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 20:55:10,868 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 20:55:10,973 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 20:55:10,976 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 20:55:10,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:55:10 BoogieIcfgContainer [2023-08-30 20:55:10,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 20:55:10,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 20:55:10,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 20:55:10,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 20:55:10,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:55:10" (1/3) ... [2023-08-30 20:55:10,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14861c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:55:10, skipping insertion in model container [2023-08-30 20:55:10,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (2/3) ... [2023-08-30 20:55:10,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14861c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:55:10, skipping insertion in model container [2023-08-30 20:55:10,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:55:10" (3/3) ... [2023-08-30 20:55:10,985 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-08-30 20:55:10,991 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 20:55:11,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 20:55:11,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 20:55:11,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 20:55:11,059 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 20:55:11,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 206 transitions, 436 flow [2023-08-30 20:55:11,131 INFO L130 PetriNetUnfolder]: 18/203 cut-off events. [2023-08-30 20:55:11,132 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:55:11,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 18/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 295 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-08-30 20:55:11,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 206 transitions, 436 flow [2023-08-30 20:55:11,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 193 transitions, 404 flow [2023-08-30 20:55:11,144 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 20:55:11,151 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 193 transitions, 404 flow [2023-08-30 20:55:11,152 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 193 transitions, 404 flow [2023-08-30 20:55:11,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 193 transitions, 404 flow [2023-08-30 20:55:11,211 INFO L130 PetriNetUnfolder]: 18/193 cut-off events. [2023-08-30 20:55:11,211 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:55:11,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 193 events. 18/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-08-30 20:55:11,215 INFO L119 LiptonReduction]: Number of co-enabled transitions 7140 [2023-08-30 20:55:15,618 INFO L134 LiptonReduction]: Checked pairs total: 7215 [2023-08-30 20:55:15,618 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-08-30 20:55:15,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 20:55:15,650 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;@5dd71563, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 20:55:15,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 20:55:15,663 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-08-30 20:55:15,663 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:55:15,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:15,663 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] [2023-08-30 20:55:15,664 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)] === [2023-08-30 20:55:15,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:15,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1770190697, now seen corresponding path program 1 times [2023-08-30 20:55:15,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:15,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792717943] [2023-08-30 20:55:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:15,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:15,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:15,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792717943] [2023-08-30 20:55:15,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792717943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:55:15,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:55:15,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 20:55:15,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711035345] [2023-08-30 20:55:15,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:55:16,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 20:55:16,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:16,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 20:55:16,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 20:55:16,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 415 [2023-08-30 20:55:16,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:16,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:16,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 415 [2023-08-30 20:55:16,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:16,188 INFO L130 PetriNetUnfolder]: 420/591 cut-off events. [2023-08-30 20:55:16,189 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-08-30 20:55:16,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 591 events. 420/591 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1989 event pairs, 213 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 992. Up to 575 conditions per place. [2023-08-30 20:55:16,193 INFO L137 encePairwiseOnDemand]: 412/415 looper letters, 22 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-30 20:55:16,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 120 flow [2023-08-30 20:55:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 20:55:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 20:55:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-30 20:55:16,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45140562248995986 [2023-08-30 20:55:16,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-30 20:55:16,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-30 20:55:16,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:16,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-30 20:55:16,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:16,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:16,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:16,217 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 70 flow. Second operand 3 states and 562 transitions. [2023-08-30 20:55:16,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 120 flow [2023-08-30 20:55:16,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 20:55:16,220 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 70 flow [2023-08-30 20:55:16,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-08-30 20:55:16,224 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-08-30 20:55:16,224 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 70 flow [2023-08-30 20:55:16,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:16,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:16,225 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] [2023-08-30 20:55:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 20:55:16,226 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)] === [2023-08-30 20:55:16,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:16,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2132029984, now seen corresponding path program 1 times [2023-08-30 20:55:16,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:16,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913119891] [2023-08-30 20:55:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:16,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:16,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913119891] [2023-08-30 20:55:16,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913119891] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:16,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44779227] [2023-08-30 20:55:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:16,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:16,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:16,405 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) [2023-08-30 20:55:16,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 20:55:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:16,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 20:55:16,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:16,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:16,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44779227] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:16,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 20:55:16,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-30 20:55:16,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594482757] [2023-08-30 20:55:16,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:55:16,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 20:55:16,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:16,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 20:55:16,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 20:55:16,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 415 [2023-08-30 20:55:16,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:16,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:16,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 415 [2023-08-30 20:55:16,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:16,751 INFO L130 PetriNetUnfolder]: 499/704 cut-off events. [2023-08-30 20:55:16,751 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 20:55:16,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 704 events. 499/704 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2415 event pairs, 124 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 1421. Up to 410 conditions per place. [2023-08-30 20:55:16,754 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 31 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-08-30 20:55:16,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 166 flow [2023-08-30 20:55:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 20:55:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 20:55:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 907 transitions. [2023-08-30 20:55:16,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43710843373493974 [2023-08-30 20:55:16,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 907 transitions. [2023-08-30 20:55:16,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 907 transitions. [2023-08-30 20:55:16,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:16,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 907 transitions. [2023-08-30 20:55:16,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:16,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:16,765 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:16,765 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 70 flow. Second operand 5 states and 907 transitions. [2023-08-30 20:55:16,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 166 flow [2023-08-30 20:55:16,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 162 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 20:55:16,767 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 89 flow [2023-08-30 20:55:16,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-30 20:55:16,767 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-08-30 20:55:16,768 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 89 flow [2023-08-30 20:55:16,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:16,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:16,768 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] [2023-08-30 20:55:16,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 20:55:16,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:16,974 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)] === [2023-08-30 20:55:16,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:16,975 INFO L85 PathProgramCache]: Analyzing trace with hash -96618323, now seen corresponding path program 1 times [2023-08-30 20:55:16,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:16,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488579831] [2023-08-30 20:55:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:16,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:17,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:17,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488579831] [2023-08-30 20:55:17,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488579831] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:17,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422751306] [2023-08-30 20:55:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:17,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:17,173 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) [2023-08-30 20:55:17,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 20:55:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:17,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 20:55:17,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:17,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:17,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422751306] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:17,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 20:55:17,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-08-30 20:55:17,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152742427] [2023-08-30 20:55:17,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:55:17,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 20:55:17,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 20:55:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-08-30 20:55:17,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 415 [2023-08-30 20:55:17,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 171.14285714285714) internal successors, (1198), 7 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:17,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:17,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 415 [2023-08-30 20:55:17,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:17,648 INFO L130 PetriNetUnfolder]: 698/1018 cut-off events. [2023-08-30 20:55:17,648 INFO L131 PetriNetUnfolder]: For 503/625 co-relation queries the response was YES. [2023-08-30 20:55:17,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 1018 events. 698/1018 cut-off events. For 503/625 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3841 event pairs, 183 based on Foata normal form. 122/979 useless extension candidates. Maximal degree in co-relation 2430. Up to 430 conditions per place. [2023-08-30 20:55:17,652 INFO L137 encePairwiseOnDemand]: 406/415 looper letters, 58 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2023-08-30 20:55:17,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 72 transitions, 363 flow [2023-08-30 20:55:17,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 20:55:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 20:55:17,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1413 transitions. [2023-08-30 20:55:17,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256024096385542 [2023-08-30 20:55:17,655 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1413 transitions. [2023-08-30 20:55:17,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1413 transitions. [2023-08-30 20:55:17,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:17,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1413 transitions. [2023-08-30 20:55:17,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 176.625) internal successors, (1413), 8 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:17,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 415.0) internal successors, (3735), 9 states have internal predecessors, (3735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:17,663 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 415.0) internal successors, (3735), 9 states have internal predecessors, (3735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:17,663 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 89 flow. Second operand 8 states and 1413 transitions. [2023-08-30 20:55:17,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 72 transitions, 363 flow [2023-08-30 20:55:17,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 72 transitions, 351 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 20:55:17,665 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 151 flow [2023-08-30 20:55:17,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-30 20:55:17,666 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-08-30 20:55:17,666 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 151 flow [2023-08-30 20:55:17,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.14285714285714) internal successors, (1198), 7 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:17,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:17,667 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] [2023-08-30 20:55:17,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 20:55:17,872 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,SelfDestructingSolverStorable2 [2023-08-30 20:55:17,873 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)] === [2023-08-30 20:55:17,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash -764145909, now seen corresponding path program 1 times [2023-08-30 20:55:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:17,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612720314] [2023-08-30 20:55:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:19,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612720314] [2023-08-30 20:55:19,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612720314] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823187410] [2023-08-30 20:55:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:19,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:19,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:19,284 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) [2023-08-30 20:55:19,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 20:55:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:19,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-30 20:55:19,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:19,467 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 [2023-08-30 20:55:19,544 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 [2023-08-30 20:55:19,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:55:19,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 20:55:19,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:55:19,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2023-08-30 20:55:20,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:20,126 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 92 treesize of output 56 [2023-08-30 20:55:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:20,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:21,256 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~sum~0 c_~mts2~0))) (and (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse0 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4)))))) (or (= c_~mts1~0 .cse0) (<= c_~N~0 ~M~0) (< .cse0 0) (< (+ ~M~0 1) c_~N~0)))) (< c_~mts3~0 .cse1)) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (= c_~mts1~0 (+ c_~sum~0 .cse2 c_~mts2~0)) (<= c_~N~0 ~M~0) (< (+ c_~mts3~0 .cse2) 0) (< (+ ~M~0 1) c_~N~0)))) (<= .cse1 c_~mts3~0)) (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse3 (+ c_~sum~0 .cse4 c_~mts2~0))) (or (= c_~mts1~0 .cse3) (<= 0 (+ c_~mts3~0 .cse4)) (<= c_~N~0 ~M~0) (<= .cse3 0) (< (+ ~M~0 1) c_~N~0))))) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= 0 (+ c_~mts3~0 .cse5)) (< 0 (+ c_~sum~0 .cse5 c_~mts2~0)) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))) (= c_~mts1~0 0)))) is different from false [2023-08-30 20:55:30,655 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:30,655 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 145 treesize of output 97 [2023-08-30 20:55:30,670 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:30,670 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 2942 treesize of output 2806 [2023-08-30 20:55:30,721 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:30,722 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 200 treesize of output 190 [2023-08-30 20:55:30,739 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:30,740 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 167 treesize of output 147 [2023-08-30 20:55:30,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 113 [2023-08-30 20:55:31,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:31,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 82 [2023-08-30 20:55:31,278 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,279 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,286 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 99 [2023-08-30 20:55:31,305 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,305 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 54 treesize of output 42 [2023-08-30 20:55:31,323 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:31,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 60 [2023-08-30 20:55:31,335 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,335 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,342 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 74 [2023-08-30 20:55:31,352 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,352 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 39 treesize of output 33 [2023-08-30 20:55:31,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:31,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 83 [2023-08-30 20:55:31,393 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,393 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,401 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 101 [2023-08-30 20:55:31,424 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,426 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 55 treesize of output 43 [2023-08-30 20:55:31,447 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:31,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2023-08-30 20:55:31,455 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,463 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 149 [2023-08-30 20:55:31,477 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,478 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 58 treesize of output 44 [2023-08-30 20:55:31,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:31,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 93 [2023-08-30 20:55:31,525 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,525 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,533 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 145 [2023-08-30 20:55:31,546 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,547 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 57 treesize of output 43 [2023-08-30 20:55:31,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:31,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 117 [2023-08-30 20:55:31,587 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,587 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:31,596 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 176 [2023-08-30 20:55:31,631 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:31,632 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 74 treesize of output 54 [2023-08-30 20:55:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:31,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823187410] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:31,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:31,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 32 [2023-08-30 20:55:31,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122731552] [2023-08-30 20:55:31,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:31,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 20:55:31,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:31,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 20:55:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=861, Unknown=6, NotChecked=62, Total=1122 [2023-08-30 20:55:32,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 415 [2023-08-30 20:55:32,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 151 flow. Second operand has 34 states, 34 states have (on average 120.02941176470588) internal successors, (4081), 34 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:32,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:32,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 415 [2023-08-30 20:55:32,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:33,996 INFO L130 PetriNetUnfolder]: 1406/2083 cut-off events. [2023-08-30 20:55:33,996 INFO L131 PetriNetUnfolder]: For 1980/2058 co-relation queries the response was YES. [2023-08-30 20:55:33,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6446 conditions, 2083 events. 1406/2083 cut-off events. For 1980/2058 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9413 event pairs, 171 based on Foata normal form. 79/2066 useless extension candidates. Maximal degree in co-relation 5714. Up to 1166 conditions per place. [2023-08-30 20:55:34,004 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 112 selfloop transitions, 40 changer transitions 3/157 dead transitions. [2023-08-30 20:55:34,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 157 transitions, 943 flow [2023-08-30 20:55:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 20:55:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 20:55:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1666 transitions. [2023-08-30 20:55:34,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3088044485634847 [2023-08-30 20:55:34,009 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1666 transitions. [2023-08-30 20:55:34,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1666 transitions. [2023-08-30 20:55:34,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:34,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1666 transitions. [2023-08-30 20:55:34,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 128.15384615384616) internal successors, (1666), 13 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:34,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 415.0) internal successors, (5810), 14 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:34,017 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 415.0) internal successors, (5810), 14 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:34,017 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 151 flow. Second operand 13 states and 1666 transitions. [2023-08-30 20:55:34,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 157 transitions, 943 flow [2023-08-30 20:55:34,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 157 transitions, 916 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 20:55:34,025 INFO L231 Difference]: Finished difference. Result has 57 places, 71 transitions, 446 flow [2023-08-30 20:55:34,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=446, PETRI_PLACES=57, PETRI_TRANSITIONS=71} [2023-08-30 20:55:34,026 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2023-08-30 20:55:34,027 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 71 transitions, 446 flow [2023-08-30 20:55:34,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 120.02941176470588) internal successors, (4081), 34 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:34,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:34,028 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] [2023-08-30 20:55:34,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:34,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:34,233 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)] === [2023-08-30 20:55:34,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:34,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1577393381, now seen corresponding path program 2 times [2023-08-30 20:55:34,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:34,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497242400] [2023-08-30 20:55:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:34,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:35,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:35,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497242400] [2023-08-30 20:55:35,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497242400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:35,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865778734] [2023-08-30 20:55:35,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:55:35,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:35,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:35,101 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) [2023-08-30 20:55:35,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 20:55:35,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:55:35,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:35,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-30 20:55:35,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:35,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:35,637 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 129 treesize of output 111 [2023-08-30 20:55:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:36,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:36,644 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:36,644 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 129 treesize of output 65 [2023-08-30 20:55:36,684 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:36,685 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 112 treesize of output 52 [2023-08-30 20:55:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:36,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865778734] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:36,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:36,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 32 [2023-08-30 20:55:36,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146749795] [2023-08-30 20:55:36,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:36,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 20:55:36,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:36,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 20:55:36,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 20:55:39,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 415 [2023-08-30 20:55:39,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 71 transitions, 446 flow. Second operand has 34 states, 34 states have (on average 150.11764705882354) internal successors, (5104), 34 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:39,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:39,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 415 [2023-08-30 20:55:39,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:41,070 INFO L130 PetriNetUnfolder]: 1672/2503 cut-off events. [2023-08-30 20:55:41,071 INFO L131 PetriNetUnfolder]: For 4153/4153 co-relation queries the response was YES. [2023-08-30 20:55:41,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9012 conditions, 2503 events. 1672/2503 cut-off events. For 4153/4153 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10816 event pairs, 295 based on Foata normal form. 1/2504 useless extension candidates. Maximal degree in co-relation 8516. Up to 1996 conditions per place. [2023-08-30 20:55:41,088 INFO L137 encePairwiseOnDemand]: 402/415 looper letters, 103 selfloop transitions, 71 changer transitions 6/180 dead transitions. [2023-08-30 20:55:41,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 180 transitions, 1342 flow [2023-08-30 20:55:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 20:55:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 20:55:41,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2481 transitions. [2023-08-30 20:55:41,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37364457831325304 [2023-08-30 20:55:41,094 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2481 transitions. [2023-08-30 20:55:41,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2481 transitions. [2023-08-30 20:55:41,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:41,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2481 transitions. [2023-08-30 20:55:41,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 155.0625) internal successors, (2481), 16 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:41,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:41,124 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:41,124 INFO L175 Difference]: Start difference. First operand has 57 places, 71 transitions, 446 flow. Second operand 16 states and 2481 transitions. [2023-08-30 20:55:41,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 180 transitions, 1342 flow [2023-08-30 20:55:41,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 180 transitions, 1315 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 20:55:41,133 INFO L231 Difference]: Finished difference. Result has 79 places, 120 transitions, 987 flow [2023-08-30 20:55:41,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=987, PETRI_PLACES=79, PETRI_TRANSITIONS=120} [2023-08-30 20:55:41,134 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 47 predicate places. [2023-08-30 20:55:41,134 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 120 transitions, 987 flow [2023-08-30 20:55:41,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 150.11764705882354) internal successors, (5104), 34 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:41,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:41,136 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] [2023-08-30 20:55:41,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:41,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:41,341 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)] === [2023-08-30 20:55:41,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash 717847813, now seen corresponding path program 3 times [2023-08-30 20:55:41,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:41,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503280111] [2023-08-30 20:55:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:41,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:42,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:42,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503280111] [2023-08-30 20:55:42,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503280111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:42,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689239849] [2023-08-30 20:55:42,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 20:55:42,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:42,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:42,417 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) [2023-08-30 20:55:42,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 20:55:42,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 20:55:42,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:42,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 20:55:42,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:42,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:55:42,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 20:55:43,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:43,211 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 129 treesize of output 111 [2023-08-30 20:55:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:43,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:45,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:45,865 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 148 treesize of output 132 [2023-08-30 20:55:45,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 90 [2023-08-30 20:55:45,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 78 [2023-08-30 20:55:46,121 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:46,122 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 724 treesize of output 708 [2023-08-30 20:55:46,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:46,156 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 529 treesize of output 520 [2023-08-30 20:55:46,186 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:46,186 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 511 treesize of output 502 [2023-08-30 20:55:46,215 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:46,215 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 493 treesize of output 484 [2023-08-30 20:55:46,245 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:46,246 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 475 treesize of output 460 [2023-08-30 20:55:46,277 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:46,278 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 451 treesize of output 442 [2023-08-30 20:55:46,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:46,312 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 433 treesize of output 412 [2023-08-30 20:55:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:57,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689239849] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:57,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:57,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37 [2023-08-30 20:55:57,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418476855] [2023-08-30 20:55:57,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-30 20:55:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:57,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-30 20:55:57,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1243, Unknown=2, NotChecked=0, Total=1482 [2023-08-30 20:55:58,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 415 [2023-08-30 20:55:58,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 120 transitions, 987 flow. Second operand has 39 states, 39 states have (on average 112.84615384615384) internal successors, (4401), 39 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:58,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:58,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 415 [2023-08-30 20:55:58,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:56:05,635 INFO L130 PetriNetUnfolder]: 2511/3780 cut-off events. [2023-08-30 20:56:05,635 INFO L131 PetriNetUnfolder]: For 11506/11506 co-relation queries the response was YES. [2023-08-30 20:56:05,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16403 conditions, 3780 events. 2511/3780 cut-off events. For 11506/11506 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18189 event pairs, 321 based on Foata normal form. 2/3782 useless extension candidates. Maximal degree in co-relation 16116. Up to 2512 conditions per place. [2023-08-30 20:56:05,659 INFO L137 encePairwiseOnDemand]: 399/415 looper letters, 218 selfloop transitions, 233 changer transitions 9/460 dead transitions. [2023-08-30 20:56:05,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 460 transitions, 4074 flow [2023-08-30 20:56:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 20:56:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 20:56:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4641 transitions. [2023-08-30 20:56:05,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28674698795180725 [2023-08-30 20:56:05,668 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4641 transitions. [2023-08-30 20:56:05,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4641 transitions. [2023-08-30 20:56:05,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:56:05,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4641 transitions. [2023-08-30 20:56:05,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 119.0) internal successors, (4641), 39 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:05,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 415.0) internal successors, (16600), 40 states have internal predecessors, (16600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:05,691 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 415.0) internal successors, (16600), 40 states have internal predecessors, (16600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:05,691 INFO L175 Difference]: Start difference. First operand has 79 places, 120 transitions, 987 flow. Second operand 39 states and 4641 transitions. [2023-08-30 20:56:05,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 460 transitions, 4074 flow [2023-08-30 20:56:05,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 460 transitions, 4045 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 20:56:05,715 INFO L231 Difference]: Finished difference. Result has 138 places, 309 transitions, 3369 flow [2023-08-30 20:56:05,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3369, PETRI_PLACES=138, PETRI_TRANSITIONS=309} [2023-08-30 20:56:05,716 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2023-08-30 20:56:05,716 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 309 transitions, 3369 flow [2023-08-30 20:56:05,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 112.84615384615384) internal successors, (4401), 39 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:05,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:56:05,723 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] [2023-08-30 20:56:05,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 20:56:05,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:05,928 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)] === [2023-08-30 20:56:05,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:56:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1798671641, now seen corresponding path program 4 times [2023-08-30 20:56:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:56:05,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229278296] [2023-08-30 20:56:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:56:05,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:56:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:56:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:56:06,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:56:06,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229278296] [2023-08-30 20:56:06,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229278296] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:56:06,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647975276] [2023-08-30 20:56:06,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 20:56:06,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:06,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:56:06,886 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) [2023-08-30 20:56:06,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 20:56:06,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 20:56:06,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:56:06,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-30 20:56:06,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:56:07,541 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-30 20:56:07,541 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 125 treesize of output 99 [2023-08-30 20:56:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:56:07,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:56:08,355 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:56:08,355 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 152 treesize of output 72 [2023-08-30 20:56:08,401 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:56:08,402 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 222 treesize of output 98 [2023-08-30 20:56:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:56:08,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647975276] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:56:08,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:56:08,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 34 [2023-08-30 20:56:08,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777784725] [2023-08-30 20:56:08,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:56:08,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-30 20:56:08,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:56:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-30 20:56:08,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2023-08-30 20:56:11,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 415 [2023-08-30 20:56:11,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 309 transitions, 3369 flow. Second operand has 36 states, 36 states have (on average 143.0) internal successors, (5148), 36 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:11,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:56:11,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 415 [2023-08-30 20:56:11,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:56:12,658 INFO L130 PetriNetUnfolder]: 2783/4198 cut-off events. [2023-08-30 20:56:12,658 INFO L131 PetriNetUnfolder]: For 26469/26469 co-relation queries the response was YES. [2023-08-30 20:56:12,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23647 conditions, 4198 events. 2783/4198 cut-off events. For 26469/26469 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20583 event pairs, 395 based on Foata normal form. 2/4200 useless extension candidates. Maximal degree in co-relation 23292. Up to 3056 conditions per place. [2023-08-30 20:56:12,691 INFO L137 encePairwiseOnDemand]: 400/415 looper letters, 178 selfloop transitions, 284 changer transitions 6/468 dead transitions. [2023-08-30 20:56:12,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 468 transitions, 5900 flow [2023-08-30 20:56:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 20:56:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 20:56:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2370 transitions. [2023-08-30 20:56:12,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569277108433735 [2023-08-30 20:56:12,695 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2370 transitions. [2023-08-30 20:56:12,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2370 transitions. [2023-08-30 20:56:12,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:56:12,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2370 transitions. [2023-08-30 20:56:12,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 148.125) internal successors, (2370), 16 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:12,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:12,704 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:12,704 INFO L175 Difference]: Start difference. First operand has 138 places, 309 transitions, 3369 flow. Second operand 16 states and 2370 transitions. [2023-08-30 20:56:12,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 468 transitions, 5900 flow [2023-08-30 20:56:12,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 468 transitions, 5366 flow, removed 136 selfloop flow, removed 12 redundant places. [2023-08-30 20:56:12,796 INFO L231 Difference]: Finished difference. Result has 151 places, 410 transitions, 5062 flow [2023-08-30 20:56:12,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5062, PETRI_PLACES=151, PETRI_TRANSITIONS=410} [2023-08-30 20:56:12,797 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2023-08-30 20:56:12,797 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 410 transitions, 5062 flow [2023-08-30 20:56:12,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 143.0) internal successors, (5148), 36 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:12,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:56:12,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:56:12,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 20:56:13,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:13,004 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)] === [2023-08-30 20:56:13,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:56:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1817816611, now seen corresponding path program 5 times [2023-08-30 20:56:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:56:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025557097] [2023-08-30 20:56:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:56:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:56:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:56:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:56:13,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:56:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025557097] [2023-08-30 20:56:13,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025557097] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:56:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128557439] [2023-08-30 20:56:13,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 20:56:13,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:13,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:56:13,874 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) [2023-08-30 20:56:13,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 20:56:13,951 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 20:56:13,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:56:13,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-30 20:56:13,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:56:14,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:56:14,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 20:56:14,503 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-30 20:56:14,504 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 125 treesize of output 99 [2023-08-30 20:56:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:56:14,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:56:16,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:56:16,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 750 treesize of output 767 [2023-08-30 20:56:16,643 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:56:16,644 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 542 treesize of output 533 [2023-08-30 20:56:16,679 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:56:16,679 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 524 treesize of output 515 [2023-08-30 20:56:16,714 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:56:16,714 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 506 treesize of output 491 [2023-08-30 20:56:16,749 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:56:16,749 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 482 treesize of output 473 [2023-08-30 20:56:16,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 464 treesize of output 458 [2023-08-30 20:56:16,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 458 treesize of output 446 [2023-08-30 20:56:16,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 434 [2023-08-30 20:56:43,470 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:57:19,636 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:57:44,267 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:57:58,382 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:58:37,585 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:59:01,476 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:01:46,909 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:05:25,984 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:07:09,169 WARN L222 SmtUtils]: Spent 12.89s on a formula simplification. DAG size of input: 1984 DAG size of output: 2011 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15