./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.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 ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 13:53:42,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 13:53:42,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 13:53:42,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 13:53:42,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 13:53:42,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 13:53:42,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 13:53:42,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 13:53:42,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 13:53:42,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 13:53:42,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 13:53:42,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 13:53:42,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 13:53:42,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 13:53:42,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 13:53:42,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 13:53:42,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 13:53:42,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 13:53:42,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 13:53:42,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 13:53:42,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 13:53:42,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 13:53:42,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 13:53:42,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 13:53:42,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 13:53:42,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 13:53:42,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 13:53:42,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 13:53:42,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 13:53:42,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 13:53:42,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 13:53:42,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 13:53:42,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 13:53:42,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 13:53:42,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 13:53:42,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 13:53:42,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 13:53:42,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 13:53:42,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 13:53:42,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 13:53:42,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 13:53:42,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 13:53:42,413 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 13:53:42,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 13:53:42,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 13:53:42,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 13:53:42,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 13:53:42,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 13:53:42,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 13:53:42,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 13:53:42,417 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 13:53:42,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 13:53:42,418 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 13:53:42,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 13:53:42,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 13:53:42,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 13:53:42,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 13:53:42,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 13:53:42,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 13:53:42,419 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 13:53:42,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 13:53:42,420 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 13:53:42,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 13:53:42,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 13:53:42,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 13:53:42,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 13:53:42,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 13:53:42,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 13:53:42,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 13:53:42,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 13:53:42,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 13:53:42,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 13:53:42,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 13:53:42,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 13:53:42,423 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 13:53:42,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 13:53:42,423 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 13:53:42,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 13:53:42,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 13:53:42,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 13:53:42,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 13:53:42,753 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 13:53:42,753 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 13:53:42,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2023-09-01 13:53:43,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 13:53:44,131 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 13:53:44,131 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2023-09-01 13:53:44,137 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859fb6c68/a4da6128f21d4eb6a6dda93616ea1023/FLAG338b2d9e1 [2023-09-01 13:53:44,148 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859fb6c68/a4da6128f21d4eb6a6dda93616ea1023 [2023-09-01 13:53:44,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 13:53:44,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 13:53:44,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 13:53:44,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 13:53:44,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 13:53:44,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b06ca03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44, skipping insertion in model container [2023-09-01 13:53:44,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 13:53:44,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 13:53:44,321 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-min-array-hom.wvr.c[2586,2599] [2023-09-01 13:53:44,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 13:53:44,346 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 13:53:44,383 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-min-array-hom.wvr.c[2586,2599] [2023-09-01 13:53:44,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 13:53:44,398 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 13:53:44,398 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 13:53:44,404 INFO L208 MainTranslator]: Completed translation [2023-09-01 13:53:44,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44 WrapperNode [2023-09-01 13:53:44,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 13:53:44,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 13:53:44,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 13:53:44,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 13:53:44,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,455 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2023-09-01 13:53:44,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 13:53:44,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 13:53:44,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 13:53:44,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 13:53:44,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,538 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 13:53:44,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 13:53:44,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 13:53:44,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 13:53:44,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (1/1) ... [2023-09-01 13:53:44,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 13:53:44,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:53:44,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 13:53:44,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 13:53:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 13:53:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 13:53:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 13:53:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 13:53:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 13:53:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 13:53:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 13:53:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 13:53:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 13:53:44,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 13:53:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 13:53:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 13:53:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 13:53:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 13:53:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 13:53:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 13:53:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 13:53:44,616 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 13:53:44,717 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 13:53:44,719 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 13:53:45,001 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 13:53:45,085 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 13:53:45,086 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 13:53:45,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:53:45 BoogieIcfgContainer [2023-09-01 13:53:45,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 13:53:45,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 13:53:45,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 13:53:45,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 13:53:45,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:53:44" (1/3) ... [2023-09-01 13:53:45,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5219d7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:53:45, skipping insertion in model container [2023-09-01 13:53:45,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:53:44" (2/3) ... [2023-09-01 13:53:45,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5219d7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:53:45, skipping insertion in model container [2023-09-01 13:53:45,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:53:45" (3/3) ... [2023-09-01 13:53:45,099 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2023-09-01 13:53:45,106 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 13:53:45,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 13:53:45,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 13:53:45,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 13:53:45,213 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 13:53:45,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 145 transitions, 314 flow [2023-09-01 13:53:45,350 INFO L130 PetriNetUnfolder]: 12/142 cut-off events. [2023-09-01 13:53:45,350 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:53:45,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 12/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-09-01 13:53:45,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 145 transitions, 314 flow [2023-09-01 13:53:45,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 132 transitions, 282 flow [2023-09-01 13:53:45,366 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 13:53:45,391 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 132 transitions, 282 flow [2023-09-01 13:53:45,395 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 132 transitions, 282 flow [2023-09-01 13:53:45,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 282 flow [2023-09-01 13:53:45,438 INFO L130 PetriNetUnfolder]: 12/132 cut-off events. [2023-09-01 13:53:45,439 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:53:45,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 12/132 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 89 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-09-01 13:53:45,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-09-01 13:53:50,160 INFO L134 LiptonReduction]: Checked pairs total: 1523 [2023-09-01 13:53:50,161 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-09-01 13:53:50,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 13:53:50,178 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;@1de84f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 13:53:50,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 13:53:50,192 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-09-01 13:53:50,192 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:53:50,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:53:50,193 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] [2023-09-01 13:53:50,194 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)] === [2023-09-01 13:53:50,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:53:50,198 INFO L85 PathProgramCache]: Analyzing trace with hash -924859563, now seen corresponding path program 1 times [2023-09-01 13:53:50,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:53:50,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274820060] [2023-09-01 13:53:50,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:53:50,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:53:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:53:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:53:51,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:53:51,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274820060] [2023-09-01 13:53:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274820060] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:53:51,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:53:51,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 13:53:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492003700] [2023-09-01 13:53:51,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:53:51,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 13:53:51,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:53:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 13:53:51,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 13:53:51,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-09-01 13:53:51,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:53:51,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:53:51,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-09-01 13:53:51,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:53:51,507 INFO L130 PetriNetUnfolder]: 514/733 cut-off events. [2023-09-01 13:53:51,508 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-09-01 13:53:51,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 733 events. 514/733 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2552 event pairs, 137 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 1179. Up to 348 conditions per place. [2023-09-01 13:53:51,514 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 50 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2023-09-01 13:53:51,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 288 flow [2023-09-01 13:53:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 13:53:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 13:53:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 960 transitions. [2023-09-01 13:53:51,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449438202247191 [2023-09-01 13:53:51,536 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 960 transitions. [2023-09-01 13:53:51,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 960 transitions. [2023-09-01 13:53:51,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:53:51,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 960 transitions. [2023-09-01 13:53:51,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:53:51,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:53:51,556 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:53:51,558 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 8 states and 960 transitions. [2023-09-01 13:53:51,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 288 flow [2023-09-01 13:53:51,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 62 transitions, 260 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 13:53:51,565 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 118 flow [2023-09-01 13:53:51,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=118, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-09-01 13:53:51,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-09-01 13:53:51,571 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 118 flow [2023-09-01 13:53:51,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:53:51,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:53:51,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:53:51,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 13:53:51,575 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)] === [2023-09-01 13:53:51,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:53:51,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1563909876, now seen corresponding path program 1 times [2023-09-01 13:53:51,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:53:51,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275943654] [2023-09-01 13:53:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:53:51,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:53:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:53:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:53:51,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:53:51,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275943654] [2023-09-01 13:53:51,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275943654] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:53:51,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896879403] [2023-09-01 13:53:51,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:53:51,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:53:51,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:53:51,745 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:53:51,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 13:53:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:53:51,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 13:53:51,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:53:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:53:51,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:53:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:53:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896879403] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 13:53:51,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 13:53:51,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-09-01 13:53:51,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596755540] [2023-09-01 13:53:51,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:53:51,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 13:53:51,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:53:51,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 13:53:51,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 13:53:52,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 267 [2023-09-01 13:53:52,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:53:52,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:53:52,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 267 [2023-09-01 13:53:52,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:53:52,187 INFO L130 PetriNetUnfolder]: 451/682 cut-off events. [2023-09-01 13:53:52,187 INFO L131 PetriNetUnfolder]: For 378/418 co-relation queries the response was YES. [2023-09-01 13:53:52,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1938 conditions, 682 events. 451/682 cut-off events. For 378/418 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2501 event pairs, 114 based on Foata normal form. 30/596 useless extension candidates. Maximal degree in co-relation 1921. Up to 527 conditions per place. [2023-09-01 13:53:52,194 INFO L137 encePairwiseOnDemand]: 262/267 looper letters, 37 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-09-01 13:53:52,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 256 flow [2023-09-01 13:53:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 13:53:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 13:53:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 609 transitions. [2023-09-01 13:53:52,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45617977528089887 [2023-09-01 13:53:52,196 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 609 transitions. [2023-09-01 13:53:52,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 609 transitions. [2023-09-01 13:53:52,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:53:52,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 609 transitions. [2023-09-01 13:53:52,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:53:52,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:53:52,202 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:53:52,202 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 118 flow. Second operand 5 states and 609 transitions. [2023-09-01 13:53:52,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 256 flow [2023-09-01 13:53:52,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 245 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-09-01 13:53:52,206 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 127 flow [2023-09-01 13:53:52,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-09-01 13:53:52,207 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-09-01 13:53:52,207 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 127 flow [2023-09-01 13:53:52,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:53:52,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:53:52,208 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] [2023-09-01 13:53:52,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 13:53:52,413 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 [2023-09-01 13:53:52,414 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)] === [2023-09-01 13:53:52,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:53:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1717822039, now seen corresponding path program 1 times [2023-09-01 13:53:52,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:53:52,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744759549] [2023-09-01 13:53:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:53:52,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:53:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:53:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:53:53,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:53:53,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744759549] [2023-09-01 13:53:53,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744759549] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:53:53,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921997412] [2023-09-01 13:53:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:53:53,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:53:53,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:53:53,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:53:53,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 13:53:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:53:54,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjunts are in the unsatisfiable core [2023-09-01 13:53:54,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:53:54,145 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 [2023-09-01 13:53:54,275 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 [2023-09-01 13:53:54,362 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 [2023-09-01 13:53:54,430 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 [2023-09-01 13:53:54,799 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-09-01 13:53:54,801 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 73 treesize of output 59 [2023-09-01 13:53:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:53:55,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:53:56,478 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (<= c_~min2~0 c_~min3~0)) (.cse5 (= c_~min2~0 c_~min1~0)) (.cse6 (< c_~min3~0 c_~min2~0)) (.cse3 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse0 (select .cse2 .cse3)) (.cse1 (select .cse2 c_~A~0.offset))) (or (<= c_~min3~0 .cse0) (= .cse1 .cse0) (<= c_~min2~0 .cse0) (<= c_~min1~0 .cse1))))) (or (and (or .cse4 (= c_~min1~0 c_~min3~0)) (or .cse5 .cse6)) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (or (< (select .cse7 c_~A~0.offset) c_~min1~0) (< (select .cse7 .cse3) c_~min3~0))))) (or .cse4 (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse9 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse8 (select .cse9 c_~A~0.offset))) (or (= .cse8 c_~min3~0) (< (select .cse9 .cse3) c_~min3~0) (<= c_~min1~0 .cse8)))))) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse11 (select .cse10 .cse3))) (or (< (select .cse10 c_~A~0.offset) c_~min1~0) (<= c_~min3~0 .cse11) (= c_~min1~0 .cse11) (<= c_~min2~0 .cse11))))) (or .cse5 (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse12 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse13 (select .cse12 .cse3))) (or (< (select .cse12 c_~A~0.offset) c_~min1~0) (<= c_~min3~0 .cse13) (< .cse13 c_~min2~0)))))) (or (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse15 (select .cse14 c_~A~0.offset))) (or (< (select .cse14 .cse3) c_~min3~0) (= c_~min2~0 .cse15) (<= c_~min1~0 .cse15))))) .cse6) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse17 (select .cse18 c_~A~0.offset)) (.cse16 (select .cse18 .cse3))) (or (<= c_~min3~0 .cse16) (= c_~min2~0 .cse17) (<= c_~min1~0 .cse17) (< .cse16 c_~min2~0))))))) is different from false [2023-09-01 13:53:56,741 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse12 (<= c_~min2~0 c_~min3~0)) (.cse6 (= c_~min2~0 c_~min1~0)) (.cse2 (+ c_~A~0.offset (* 4 c_~M~0))) (.cse15 (< c_~min3~0 c_~min2~0))) (and (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse0 (select .cse1 .cse2))) (or (= c_~min1~0 .cse0) (<= c_~min2~0 .cse0) (<= c_~min3~0 .cse0) (< (select .cse1 c_~A~0.offset) c_~min1~0))))) (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse5 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse3 (select .cse5 c_~A~0.offset)) (.cse4 (select .cse5 .cse2))) (or (= c_~min2~0 .cse3) (<= c_~min1~0 .cse3) (< .cse4 c_~min2~0) (<= c_~min3~0 .cse4))))) (or .cse6 (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse8 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse7 (select .cse8 .cse2))) (or (< .cse7 c_~min2~0) (<= c_~min3~0 .cse7) (< (select .cse8 c_~A~0.offset) c_~min1~0)))))) (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse11 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse9 (select .cse11 c_~A~0.offset)) (.cse10 (select .cse11 .cse2))) (or (<= c_~min1~0 .cse9) (<= c_~min2~0 .cse10) (= .cse9 .cse10) (<= c_~min3~0 .cse10))))) (or .cse12 (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse14 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse13 (select .cse14 c_~A~0.offset))) (or (<= c_~min1~0 .cse13) (< (select .cse14 .cse2) c_~min3~0) (= c_~min3~0 .cse13)))))) (or (and (or .cse12 (= c_~min1~0 c_~min3~0)) (or .cse6 .cse15)) (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (or (< (select .cse16 .cse2) c_~min3~0) (< (select .cse16 c_~A~0.offset) c_~min1~0))))) (or (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse18 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse17 (select .cse18 c_~A~0.offset))) (or (= c_~min2~0 .cse17) (<= c_~min1~0 .cse17) (< (select .cse18 .cse2) c_~min3~0))))) .cse15))) is different from false [2023-09-01 13:53:58,433 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:53:58,434 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 125 treesize of output 89 [2023-09-01 13:53:58,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:53:58,452 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 541 treesize of output 521 [2023-09-01 13:53:58,479 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:53:58,479 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 513 treesize of output 441 [2023-09-01 13:53:58,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:53:58,505 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 401 [2023-09-01 13:53:58,538 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:53:58,538 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 205 treesize of output 193 [2023-09-01 13:54:00,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:00,748 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 121 treesize of output 85 [2023-09-01 13:54:00,772 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:00,773 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 4373 treesize of output 4185 [2023-09-01 13:54:00,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:54:00,895 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 237 treesize of output 221 [2023-09-01 13:54:00,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:54:00,913 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 418 treesize of output 354 [2023-09-01 13:54:00,938 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:00,939 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 218 treesize of output 190 [2023-09-01 13:54:01,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:01,407 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 89 treesize of output 65 [2023-09-01 13:54:01,425 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:01,426 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 764 treesize of output 736 [2023-09-01 13:54:01,471 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:01,472 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 350 treesize of output 314 [2023-09-01 13:54:01,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:54:01,501 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 142 [2023-09-01 13:54:01,522 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:01,522 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 159 treesize of output 143 [2023-09-01 13:54:01,782 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:01,783 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 93 treesize of output 69 [2023-09-01 13:54:01,806 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:01,807 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 1688 treesize of output 1612 [2023-09-01 13:54:01,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:54:01,868 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 156 [2023-09-01 13:54:01,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:54:01,883 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 142 [2023-09-01 13:54:02,079 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:02,080 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 195 treesize of output 143 [2023-09-01 13:54:02,337 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:02,337 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 61 treesize of output 49 [2023-09-01 13:54:02,359 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:02,360 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 2187 treesize of output 2095 [2023-09-01 13:54:02,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:54:02,410 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 111 [2023-09-01 13:54:02,428 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:02,428 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 235 treesize of output 207 [2023-09-01 13:54:02,450 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:02,450 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 109 treesize of output 97 [2023-09-01 13:54:02,550 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:54:02,551 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 150 treesize of output 1 [2023-09-01 13:54:02,564 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:54:02,565 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 89 treesize of output 1 [2023-09-01 13:54:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921997412] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:54:02,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:54:02,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 29 [2023-09-01 13:54:02,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102240314] [2023-09-01 13:54:02,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:54:02,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 13:54:02,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:54:02,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 13:54:02,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=689, Unknown=2, NotChecked=110, Total=930 [2023-09-01 13:54:02,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-09-01 13:54:02,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 127 flow. Second operand has 31 states, 31 states have (on average 71.03225806451613) internal successors, (2202), 31 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:02,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:54:02,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-09-01 13:54:02,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:54:05,620 INFO L130 PetriNetUnfolder]: 1091/1613 cut-off events. [2023-09-01 13:54:05,620 INFO L131 PetriNetUnfolder]: For 1313/1313 co-relation queries the response was YES. [2023-09-01 13:54:05,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4932 conditions, 1613 events. 1091/1613 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6171 event pairs, 160 based on Foata normal form. 17/1414 useless extension candidates. Maximal degree in co-relation 3672. Up to 999 conditions per place. [2023-09-01 13:54:05,630 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 108 selfloop transitions, 67 changer transitions 13/188 dead transitions. [2023-09-01 13:54:05,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 188 transitions, 1077 flow [2023-09-01 13:54:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-09-01 13:54:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-09-01 13:54:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1906 transitions. [2023-09-01 13:54:05,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2855430711610487 [2023-09-01 13:54:05,636 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1906 transitions. [2023-09-01 13:54:05,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1906 transitions. [2023-09-01 13:54:05,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:54:05,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1906 transitions. [2023-09-01 13:54:05,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 76.24) internal successors, (1906), 25 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:05,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 267.0) internal successors, (6942), 26 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:05,650 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 267.0) internal successors, (6942), 26 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:05,650 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 127 flow. Second operand 25 states and 1906 transitions. [2023-09-01 13:54:05,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 188 transitions, 1077 flow [2023-09-01 13:54:05,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 188 transitions, 1016 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-09-01 13:54:05,659 INFO L231 Difference]: Finished difference. Result has 73 places, 96 transitions, 619 flow [2023-09-01 13:54:05,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=619, PETRI_PLACES=73, PETRI_TRANSITIONS=96} [2023-09-01 13:54:05,659 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2023-09-01 13:54:05,660 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 96 transitions, 619 flow [2023-09-01 13:54:05,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 71.03225806451613) internal successors, (2202), 31 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:05,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:54:05,661 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] [2023-09-01 13:54:05,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 13:54:05,866 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 [2023-09-01 13:54:05,867 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)] === [2023-09-01 13:54:05,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:54:05,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1797774933, now seen corresponding path program 2 times [2023-09-01 13:54:05,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:54:05,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005485714] [2023-09-01 13:54:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:54:05,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:54:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:54:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:06,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:54:06,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005485714] [2023-09-01 13:54:06,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005485714] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:54:06,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541718799] [2023-09-01 13:54:06,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:54:06,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:54:06,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:54:06,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:54:06,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 13:54:06,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:54:06,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:54:06,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 34 conjunts are in the unsatisfiable core [2023-09-01 13:54:06,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:54:07,034 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:54:07,037 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:07,037 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 64 treesize of output 37 [2023-09-01 13:54:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:07,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:54:07,445 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:07,446 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 125 treesize of output 69 [2023-09-01 13:54:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:07,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541718799] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:54:07,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:54:07,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-09-01 13:54:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846764451] [2023-09-01 13:54:07,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:54:07,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-09-01 13:54:07,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:54:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-09-01 13:54:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2023-09-01 13:54:08,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 267 [2023-09-01 13:54:08,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 96 transitions, 619 flow. Second operand has 23 states, 23 states have (on average 102.6086956521739) internal successors, (2360), 23 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:08,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:54:08,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 267 [2023-09-01 13:54:08,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:54:09,770 INFO L130 PetriNetUnfolder]: 1348/2024 cut-off events. [2023-09-01 13:54:09,770 INFO L131 PetriNetUnfolder]: For 4141/4189 co-relation queries the response was YES. [2023-09-01 13:54:09,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7802 conditions, 2024 events. 1348/2024 cut-off events. For 4141/4189 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8962 event pairs, 148 based on Foata normal form. 43/2055 useless extension candidates. Maximal degree in co-relation 7735. Up to 1321 conditions per place. [2023-09-01 13:54:09,788 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 109 selfloop transitions, 69 changer transitions 4/189 dead transitions. [2023-09-01 13:54:09,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 189 transitions, 1397 flow [2023-09-01 13:54:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 13:54:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 13:54:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1212 transitions. [2023-09-01 13:54:09,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41266598569969354 [2023-09-01 13:54:09,792 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1212 transitions. [2023-09-01 13:54:09,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1212 transitions. [2023-09-01 13:54:09,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:54:09,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1212 transitions. [2023-09-01 13:54:09,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 110.18181818181819) internal successors, (1212), 11 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:09,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:09,801 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:09,801 INFO L175 Difference]: Start difference. First operand has 73 places, 96 transitions, 619 flow. Second operand 11 states and 1212 transitions. [2023-09-01 13:54:09,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 189 transitions, 1397 flow [2023-09-01 13:54:09,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 189 transitions, 1376 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-09-01 13:54:09,820 INFO L231 Difference]: Finished difference. Result has 86 places, 128 transitions, 1055 flow [2023-09-01 13:54:09,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1055, PETRI_PLACES=86, PETRI_TRANSITIONS=128} [2023-09-01 13:54:09,822 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-09-01 13:54:09,822 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 128 transitions, 1055 flow [2023-09-01 13:54:09,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 102.6086956521739) internal successors, (2360), 23 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:09,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:54:09,823 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] [2023-09-01 13:54:09,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 13:54:10,029 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 [2023-09-01 13:54:10,029 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)] === [2023-09-01 13:54:10,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:54:10,030 INFO L85 PathProgramCache]: Analyzing trace with hash 184588913, now seen corresponding path program 3 times [2023-09-01 13:54:10,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:54:10,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161760147] [2023-09-01 13:54:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:54:10,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:54:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:54:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:10,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:54:10,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161760147] [2023-09-01 13:54:10,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161760147] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:54:10,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358564598] [2023-09-01 13:54:10,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:54:10,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:54:10,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:54:10,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:54:10,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 13:54:10,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 13:54:10,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:54:10,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 39 conjunts are in the unsatisfiable core [2023-09-01 13:54:10,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:54:11,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:54:11,241 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 34 treesize of output 32 [2023-09-01 13:54:11,393 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:54:11,395 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:11,395 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 64 treesize of output 37 [2023-09-01 13:54:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:11,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:54:12,031 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:12,032 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 241 treesize of output 177 [2023-09-01 13:54:12,038 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 147 treesize of output 141 [2023-09-01 13:54:12,043 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 141 treesize of output 129 [2023-09-01 13:54:12,049 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 129 treesize of output 111 [2023-09-01 13:54:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:12,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358564598] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:54:12,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:54:12,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 26 [2023-09-01 13:54:12,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357594212] [2023-09-01 13:54:12,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:54:12,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-09-01 13:54:12,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:54:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-09-01 13:54:12,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=647, Unknown=5, NotChecked=0, Total=756 [2023-09-01 13:54:13,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 267 [2023-09-01 13:54:13,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 128 transitions, 1055 flow. Second operand has 28 states, 28 states have (on average 77.28571428571429) internal successors, (2164), 28 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:13,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:54:13,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 267 [2023-09-01 13:54:13,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:54:17,591 INFO L130 PetriNetUnfolder]: 2159/3216 cut-off events. [2023-09-01 13:54:17,591 INFO L131 PetriNetUnfolder]: For 10698/10698 co-relation queries the response was YES. [2023-09-01 13:54:17,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14353 conditions, 3216 events. 2159/3216 cut-off events. For 10698/10698 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15069 event pairs, 161 based on Foata normal form. 44/3260 useless extension candidates. Maximal degree in co-relation 14314. Up to 1871 conditions per place. [2023-09-01 13:54:17,619 INFO L137 encePairwiseOnDemand]: 254/267 looper letters, 196 selfloop transitions, 121 changer transitions 2/319 dead transitions. [2023-09-01 13:54:17,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 319 transitions, 2747 flow [2023-09-01 13:54:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 13:54:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 13:54:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1707 transitions. [2023-09-01 13:54:17,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196629213483146 [2023-09-01 13:54:17,626 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1707 transitions. [2023-09-01 13:54:17,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1707 transitions. [2023-09-01 13:54:17,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:54:17,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1707 transitions. [2023-09-01 13:54:17,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 85.35) internal successors, (1707), 20 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:17,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:17,639 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:17,639 INFO L175 Difference]: Start difference. First operand has 86 places, 128 transitions, 1055 flow. Second operand 20 states and 1707 transitions. [2023-09-01 13:54:17,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 319 transitions, 2747 flow [2023-09-01 13:54:17,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 319 transitions, 2714 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-09-01 13:54:17,688 INFO L231 Difference]: Finished difference. Result has 112 places, 192 transitions, 1994 flow [2023-09-01 13:54:17,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1994, PETRI_PLACES=112, PETRI_TRANSITIONS=192} [2023-09-01 13:54:17,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2023-09-01 13:54:17,691 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 192 transitions, 1994 flow [2023-09-01 13:54:17,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 77.28571428571429) internal successors, (2164), 28 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:17,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:54:17,692 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] [2023-09-01 13:54:17,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 13:54:17,897 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 [2023-09-01 13:54:17,898 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)] === [2023-09-01 13:54:17,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:54:17,898 INFO L85 PathProgramCache]: Analyzing trace with hash -542212045, now seen corresponding path program 4 times [2023-09-01 13:54:17,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:54:17,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439991589] [2023-09-01 13:54:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:54:17,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:54:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:54:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:18,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:54:18,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439991589] [2023-09-01 13:54:18,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439991589] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:54:18,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547057528] [2023-09-01 13:54:18,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:54:18,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:54:18,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:54:18,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:54:18,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 13:54:18,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:54:18,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:54:18,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjunts are in the unsatisfiable core [2023-09-01 13:54:18,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:54:19,104 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-09-01 13:54:19,105 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 77 treesize of output 63 [2023-09-01 13:54:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:54:19,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:54:19,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:19,597 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 117 treesize of output 69 [2023-09-01 13:54:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:54:19,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547057528] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:54:19,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:54:19,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 23 [2023-09-01 13:54:19,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877640102] [2023-09-01 13:54:19,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:54:19,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 13:54:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:54:19,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 13:54:19,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2023-09-01 13:54:21,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 267 [2023-09-01 13:54:21,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 192 transitions, 1994 flow. Second operand has 25 states, 25 states have (on average 98.48) internal successors, (2462), 25 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:21,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:54:21,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 267 [2023-09-01 13:54:21,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:54:25,050 INFO L130 PetriNetUnfolder]: 3690/5659 cut-off events. [2023-09-01 13:54:25,051 INFO L131 PetriNetUnfolder]: For 33384/33384 co-relation queries the response was YES. [2023-09-01 13:54:25,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29048 conditions, 5659 events. 3690/5659 cut-off events. For 33384/33384 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 31189 event pairs, 190 based on Foata normal form. 7/5666 useless extension candidates. Maximal degree in co-relation 28999. Up to 2351 conditions per place. [2023-09-01 13:54:25,107 INFO L137 encePairwiseOnDemand]: 252/267 looper letters, 294 selfloop transitions, 282 changer transitions 36/612 dead transitions. [2023-09-01 13:54:25,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 612 transitions, 6418 flow [2023-09-01 13:54:25,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-09-01 13:54:25,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-09-01 13:54:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4768 transitions. [2023-09-01 13:54:25,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882103891874288 [2023-09-01 13:54:25,122 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4768 transitions. [2023-09-01 13:54:25,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4768 transitions. [2023-09-01 13:54:25,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:54:25,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4768 transitions. [2023-09-01 13:54:25,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 103.65217391304348) internal successors, (4768), 46 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:25,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 267.0) internal successors, (12549), 47 states have internal predecessors, (12549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:25,155 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 267.0) internal successors, (12549), 47 states have internal predecessors, (12549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:25,155 INFO L175 Difference]: Start difference. First operand has 112 places, 192 transitions, 1994 flow. Second operand 46 states and 4768 transitions. [2023-09-01 13:54:25,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 612 transitions, 6418 flow [2023-09-01 13:54:25,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 612 transitions, 6068 flow, removed 153 selfloop flow, removed 7 redundant places. [2023-09-01 13:54:25,338 INFO L231 Difference]: Finished difference. Result has 178 places, 398 transitions, 4869 flow [2023-09-01 13:54:25,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4869, PETRI_PLACES=178, PETRI_TRANSITIONS=398} [2023-09-01 13:54:25,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2023-09-01 13:54:25,339 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 398 transitions, 4869 flow [2023-09-01 13:54:25,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.48) internal successors, (2462), 25 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:25,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:54:25,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:54:25,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 13:54:25,541 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 [2023-09-01 13:54:25,541 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)] === [2023-09-01 13:54:25,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:54:25,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1208376447, now seen corresponding path program 5 times [2023-09-01 13:54:25,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:54:25,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401289767] [2023-09-01 13:54:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:54:25,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:54:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:54:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:26,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:54:26,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401289767] [2023-09-01 13:54:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401289767] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:54:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092384939] [2023-09-01 13:54:26,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 13:54:26,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:54:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:54:26,440 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:54:26,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 13:54:26,513 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-09-01 13:54:26,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:54:26,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 13:54:26,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:54:26,742 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:26,743 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 77 treesize of output 71 [2023-09-01 13:54:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:54:27,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:54:27,527 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:54:27,527 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 117 treesize of output 65 [2023-09-01 13:54:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:54:27,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092384939] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:54:27,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:54:27,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 21 [2023-09-01 13:54:27,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217444364] [2023-09-01 13:54:27,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:54:27,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-09-01 13:54:27,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:54:27,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-09-01 13:54:27,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-09-01 13:54:28,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-09-01 13:54:28,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 398 transitions, 4869 flow. Second operand has 23 states, 23 states have (on average 97.6086956521739) internal successors, (2245), 23 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:28,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:54:28,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-09-01 13:54:28,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:54:31,555 INFO L130 PetriNetUnfolder]: 4546/7224 cut-off events. [2023-09-01 13:54:31,555 INFO L131 PetriNetUnfolder]: For 101225/101596 co-relation queries the response was YES. [2023-09-01 13:54:31,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48306 conditions, 7224 events. 4546/7224 cut-off events. For 101225/101596 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 44972 event pairs, 486 based on Foata normal form. 227/7432 useless extension candidates. Maximal degree in co-relation 48230. Up to 4394 conditions per place. [2023-09-01 13:54:31,644 INFO L137 encePairwiseOnDemand]: 253/267 looper letters, 298 selfloop transitions, 339 changer transitions 14/672 dead transitions. [2023-09-01 13:54:31,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 672 transitions, 9216 flow [2023-09-01 13:54:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 13:54:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 13:54:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2471 transitions. [2023-09-01 13:54:31,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856117353308365 [2023-09-01 13:54:31,649 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2471 transitions. [2023-09-01 13:54:31,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2471 transitions. [2023-09-01 13:54:31,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:54:31,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2471 transitions. [2023-09-01 13:54:31,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 102.95833333333333) internal successors, (2471), 24 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:31,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 267.0) internal successors, (6675), 25 states have internal predecessors, (6675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:31,669 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 267.0) internal successors, (6675), 25 states have internal predecessors, (6675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:31,669 INFO L175 Difference]: Start difference. First operand has 178 places, 398 transitions, 4869 flow. Second operand 24 states and 2471 transitions. [2023-09-01 13:54:31,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 672 transitions, 9216 flow [2023-09-01 13:54:32,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 672 transitions, 8312 flow, removed 436 selfloop flow, removed 7 redundant places. [2023-09-01 13:54:32,018 INFO L231 Difference]: Finished difference. Result has 199 places, 572 transitions, 7408 flow [2023-09-01 13:54:32,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=4325, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=7408, PETRI_PLACES=199, PETRI_TRANSITIONS=572} [2023-09-01 13:54:32,019 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2023-09-01 13:54:32,019 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 572 transitions, 7408 flow [2023-09-01 13:54:32,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 97.6086956521739) internal successors, (2245), 23 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:32,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:54:32,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:54:32,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 13:54:32,220 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 [2023-09-01 13:54:32,220 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)] === [2023-09-01 13:54:32,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:54:32,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1180941759, now seen corresponding path program 6 times [2023-09-01 13:54:32,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:54:32,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516839120] [2023-09-01 13:54:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:54:32,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:54:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:54:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:54:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516839120] [2023-09-01 13:54:32,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516839120] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:54:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281990620] [2023-09-01 13:54:32,855 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 13:54:32,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:54:32,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:54:32,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:54:32,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 13:54:32,957 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 13:54:32,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:54:32,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 34 conjunts are in the unsatisfiable core [2023-09-01 13:54:32,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:54:33,415 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-09-01 13:54:33,415 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 73 treesize of output 59 [2023-09-01 13:54:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:33,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:54:33,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:33,833 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 101 treesize of output 69 [2023-09-01 13:54:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:34,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281990620] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:54:34,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:54:34,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 24 [2023-09-01 13:54:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857465775] [2023-09-01 13:54:34,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:54:34,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-09-01 13:54:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:54:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-09-01 13:54:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-09-01 13:54:35,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 267 [2023-09-01 13:54:35,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 572 transitions, 7408 flow. Second operand has 26 states, 26 states have (on average 99.65384615384616) internal successors, (2591), 26 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:35,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:54:35,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 267 [2023-09-01 13:54:35,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:54:38,071 INFO L130 PetriNetUnfolder]: 5457/8532 cut-off events. [2023-09-01 13:54:38,072 INFO L131 PetriNetUnfolder]: For 139401/139401 co-relation queries the response was YES. [2023-09-01 13:54:38,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61020 conditions, 8532 events. 5457/8532 cut-off events. For 139401/139401 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 51665 event pairs, 1042 based on Foata normal form. 5/8537 useless extension candidates. Maximal degree in co-relation 60938. Up to 7397 conditions per place. [2023-09-01 13:54:38,254 INFO L137 encePairwiseOnDemand]: 254/267 looper letters, 557 selfloop transitions, 185 changer transitions 17/759 dead transitions. [2023-09-01 13:54:38,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 759 transitions, 10998 flow [2023-09-01 13:54:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-09-01 13:54:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-09-01 13:54:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3120 transitions. [2023-09-01 13:54:38,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3895131086142322 [2023-09-01 13:54:38,259 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3120 transitions. [2023-09-01 13:54:38,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3120 transitions. [2023-09-01 13:54:38,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:54:38,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3120 transitions. [2023-09-01 13:54:38,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 104.0) internal successors, (3120), 30 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:38,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 267.0) internal successors, (8277), 31 states have internal predecessors, (8277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:38,280 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 267.0) internal successors, (8277), 31 states have internal predecessors, (8277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:38,280 INFO L175 Difference]: Start difference. First operand has 199 places, 572 transitions, 7408 flow. Second operand 30 states and 3120 transitions. [2023-09-01 13:54:38,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 759 transitions, 10998 flow [2023-09-01 13:54:38,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 759 transitions, 10246 flow, removed 338 selfloop flow, removed 6 redundant places. [2023-09-01 13:54:38,891 INFO L231 Difference]: Finished difference. Result has 233 places, 645 transitions, 8388 flow [2023-09-01 13:54:38,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6885, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8388, PETRI_PLACES=233, PETRI_TRANSITIONS=645} [2023-09-01 13:54:38,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2023-09-01 13:54:38,892 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 645 transitions, 8388 flow [2023-09-01 13:54:38,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.65384615384616) internal successors, (2591), 26 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:38,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:54:38,893 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] [2023-09-01 13:54:38,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-01 13:54:39,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:54:39,093 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:54:39,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:54:39,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1868694365, now seen corresponding path program 7 times [2023-09-01 13:54:39,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:54:39,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480322578] [2023-09-01 13:54:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:54:39,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:54:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:54:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:40,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:54:40,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480322578] [2023-09-01 13:54:40,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480322578] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:54:40,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770103003] [2023-09-01 13:54:40,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 13:54:40,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:54:40,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:54:40,500 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:54:40,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 13:54:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:54:40,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjunts are in the unsatisfiable core [2023-09-01 13:54:40,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:54:40,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:54:40,906 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 34 treesize of output 32 [2023-09-01 13:54:40,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:54:40,998 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 34 treesize of output 32 [2023-09-01 13:54:41,160 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:54:41,163 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:41,163 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 64 treesize of output 37 [2023-09-01 13:54:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:41,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:54:41,625 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~min2~0 c_~min1~0)) (.cse2 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or .cse0 (forall ((v_ArrVal_380 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_380) c_~A~0.base) .cse2))) (or (<= c_~min3~0 .cse1) (< .cse1 c_~min2~0))))) (or (forall ((v_ArrVal_380 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_380) c_~A~0.base) .cse2) c_~min3~0)) (and (or (<= c_~min2~0 c_~min3~0) (= c_~min1~0 c_~min3~0)) (or .cse0 (< c_~min3~0 c_~min2~0)))) (forall ((v_ArrVal_380 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_380) c_~A~0.base) .cse2))) (or (<= c_~min3~0 .cse3) (<= c_~min2~0 .cse3) (= c_~min1~0 .cse3)))))) is different from false [2023-09-01 13:54:41,689 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~min2~0 c_~min1~0)) (.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or (and (or (<= c_~min2~0 c_~min3~0) (= c_~min1~0 c_~min3~0)) (or .cse0 (< c_~min3~0 c_~min2~0))) (forall ((v_ArrVal_380 (Array Int Int)) (v_ArrVal_379 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_379) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_380) c_~A~0.base) .cse1) c_~min3~0))) (forall ((v_ArrVal_380 (Array Int Int)) (v_ArrVal_379 (Array Int Int))) (let ((.cse2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_379) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_380) c_~A~0.base) .cse1))) (or (<= c_~min2~0 .cse2) (= c_~min1~0 .cse2) (<= c_~min3~0 .cse2)))) (or .cse0 (forall ((v_ArrVal_380 (Array Int Int)) (v_ArrVal_379 (Array Int Int))) (let ((.cse3 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_379) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_380) c_~A~0.base) .cse1))) (or (< .cse3 c_~min2~0) (<= c_~min3~0 .cse3))))))) is different from false [2023-09-01 13:54:41,768 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:54:41,770 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 938 treesize of output 826 [2023-09-01 13:54:41,787 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 376 treesize of output 364 [2023-09-01 13:54:41,793 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 364 treesize of output 340 [2023-09-01 13:54:41,799 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 340 treesize of output 322 [2023-09-01 13:54:41,806 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 322 treesize of output 286 [2023-09-01 13:54:41,815 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 286 treesize of output 280 [2023-09-01 13:54:41,823 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 280 treesize of output 268 [2023-09-01 13:54:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 13:54:42,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770103003] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:54:42,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:54:42,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 29 [2023-09-01 13:54:42,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377235729] [2023-09-01 13:54:42,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:54:42,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 13:54:42,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:54:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 13:54:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=676, Unknown=2, NotChecked=110, Total=930 [2023-09-01 13:54:42,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-09-01 13:54:42,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 645 transitions, 8388 flow. Second operand has 31 states, 31 states have (on average 71.2258064516129) internal successors, (2208), 31 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:42,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:54:42,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-09-01 13:54:42,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:54:45,809 INFO L130 PetriNetUnfolder]: 6791/10601 cut-off events. [2023-09-01 13:54:45,809 INFO L131 PetriNetUnfolder]: For 166112/166112 co-relation queries the response was YES. [2023-09-01 13:54:45,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76019 conditions, 10601 events. 6791/10601 cut-off events. For 166112/166112 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 66582 event pairs, 805 based on Foata normal form. 4/10605 useless extension candidates. Maximal degree in co-relation 75925. Up to 6807 conditions per place. [2023-09-01 13:54:46,155 INFO L137 encePairwiseOnDemand]: 251/267 looper letters, 550 selfloop transitions, 409 changer transitions 8/967 dead transitions. [2023-09-01 13:54:46,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 967 transitions, 14279 flow [2023-09-01 13:54:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-01 13:54:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-09-01 13:54:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1660 transitions. [2023-09-01 13:54:46,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2960584983056893 [2023-09-01 13:54:46,160 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1660 transitions. [2023-09-01 13:54:46,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1660 transitions. [2023-09-01 13:54:46,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:54:46,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1660 transitions. [2023-09-01 13:54:46,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 79.04761904761905) internal successors, (1660), 21 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) [2023-09-01 13:54:46,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 267.0) internal successors, (5874), 22 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:46,169 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 267.0) internal successors, (5874), 22 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:46,169 INFO L175 Difference]: Start difference. First operand has 233 places, 645 transitions, 8388 flow. Second operand 21 states and 1660 transitions. [2023-09-01 13:54:46,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 967 transitions, 14279 flow [2023-09-01 13:54:46,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 967 transitions, 13867 flow, removed 165 selfloop flow, removed 12 redundant places. [2023-09-01 13:54:46,832 INFO L231 Difference]: Finished difference. Result has 252 places, 825 transitions, 12220 flow [2023-09-01 13:54:46,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7985, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=12220, PETRI_PLACES=252, PETRI_TRANSITIONS=825} [2023-09-01 13:54:46,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2023-09-01 13:54:46,834 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 825 transitions, 12220 flow [2023-09-01 13:54:46,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 71.2258064516129) internal successors, (2208), 31 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:46,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:54:46,835 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] [2023-09-01 13:54:46,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 13:54:47,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-09-01 13:54:47,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:54:47,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:54:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1505548975, now seen corresponding path program 1 times [2023-09-01 13:54:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:54:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354679788] [2023-09-01 13:54:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:54:47,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:54:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:54:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:54:47,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:54:47,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354679788] [2023-09-01 13:54:47,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354679788] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:54:47,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61613599] [2023-09-01 13:54:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:54:47,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:54:47,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:54:47,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:54:47,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 13:54:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:54:47,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 13:54:47,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:54:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:54:47,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:54:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:54:47,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61613599] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:54:47,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:54:47,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-09-01 13:54:47,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357886084] [2023-09-01 13:54:47,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:54:47,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 13:54:47,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:54:47,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 13:54:47,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-09-01 13:54:47,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-09-01 13:54:47,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 825 transitions, 12220 flow. Second operand has 18 states, 18 states have (on average 111.27777777777777) internal successors, (2003), 18 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:47,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:54:47,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-09-01 13:54:47,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:54:51,613 INFO L130 PetriNetUnfolder]: 9715/15619 cut-off events. [2023-09-01 13:54:51,613 INFO L131 PetriNetUnfolder]: For 348142/348190 co-relation queries the response was YES. [2023-09-01 13:54:51,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125431 conditions, 15619 events. 9715/15619 cut-off events. For 348142/348190 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 112535 event pairs, 695 based on Foata normal form. 367/15967 useless extension candidates. Maximal degree in co-relation 125326. Up to 4868 conditions per place. [2023-09-01 13:54:51,803 INFO L137 encePairwiseOnDemand]: 258/267 looper letters, 1468 selfloop transitions, 411 changer transitions 30/1924 dead transitions. [2023-09-01 13:54:51,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 1924 transitions, 30393 flow [2023-09-01 13:54:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 13:54:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 13:54:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2369 transitions. [2023-09-01 13:54:51,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436329588014981 [2023-09-01 13:54:51,808 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2369 transitions. [2023-09-01 13:54:51,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2369 transitions. [2023-09-01 13:54:51,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:54:51,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2369 transitions. [2023-09-01 13:54:51,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 118.45) internal successors, (2369), 20 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:51,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:51,822 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:51,823 INFO L175 Difference]: Start difference. First operand has 252 places, 825 transitions, 12220 flow. Second operand 20 states and 2369 transitions. [2023-09-01 13:54:51,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 1924 transitions, 30393 flow [2023-09-01 13:54:54,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 1924 transitions, 29407 flow, removed 403 selfloop flow, removed 8 redundant places. [2023-09-01 13:54:54,075 INFO L231 Difference]: Finished difference. Result has 275 places, 1064 transitions, 17268 flow [2023-09-01 13:54:54,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=11572, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=17268, PETRI_PLACES=275, PETRI_TRANSITIONS=1064} [2023-09-01 13:54:54,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-09-01 13:54:54,077 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 1064 transitions, 17268 flow [2023-09-01 13:54:54,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 111.27777777777777) internal successors, (2003), 18 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:54,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:54:54,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:54:54,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 13:54:54,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 13:54:54,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:54:54,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:54:54,279 INFO L85 PathProgramCache]: Analyzing trace with hash 17771202, now seen corresponding path program 8 times [2023-09-01 13:54:54,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:54:54,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818577319] [2023-09-01 13:54:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:54:54,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:54:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:54:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:54:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818577319] [2023-09-01 13:54:54,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818577319] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:54:54,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877181121] [2023-09-01 13:54:54,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:54:54,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:54:54,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:54:54,397 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:54:54,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 13:54:54,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:54:54,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:54:54,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 13:54:54,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:54:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:54,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:54:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:54:54,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877181121] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:54:54,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:54:54,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-09-01 13:54:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997305394] [2023-09-01 13:54:54,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:54:54,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 13:54:54,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:54:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 13:54:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-09-01 13:54:54,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 267 [2023-09-01 13:54:54,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 1064 transitions, 17268 flow. Second operand has 15 states, 15 states have (on average 117.8) internal successors, (1767), 15 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:54,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:54:54,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 267 [2023-09-01 13:54:54,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:54:58,431 INFO L130 PetriNetUnfolder]: 7736/12414 cut-off events. [2023-09-01 13:54:58,431 INFO L131 PetriNetUnfolder]: For 347597/349075 co-relation queries the response was YES. [2023-09-01 13:54:58,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107449 conditions, 12414 events. 7736/12414 cut-off events. For 347597/349075 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 86997 event pairs, 2257 based on Foata normal form. 929/13019 useless extension candidates. Maximal degree in co-relation 107332. Up to 9471 conditions per place. [2023-09-01 13:54:58,607 INFO L137 encePairwiseOnDemand]: 262/267 looper letters, 859 selfloop transitions, 82 changer transitions 2/1065 dead transitions. [2023-09-01 13:54:58,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1065 transitions, 19008 flow [2023-09-01 13:54:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 13:54:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 13:54:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 870 transitions. [2023-09-01 13:54:58,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654895666131621 [2023-09-01 13:54:58,610 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 870 transitions. [2023-09-01 13:54:58,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 870 transitions. [2023-09-01 13:54:58,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:54:58,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 870 transitions. [2023-09-01 13:54:58,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.28571428571429) internal successors, (870), 7 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:58,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:58,616 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:54:58,617 INFO L175 Difference]: Start difference. First operand has 275 places, 1064 transitions, 17268 flow. Second operand 7 states and 870 transitions. [2023-09-01 13:54:58,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1065 transitions, 19008 flow [2023-09-01 13:55:02,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 1065 transitions, 17887 flow, removed 553 selfloop flow, removed 6 redundant places. [2023-09-01 13:55:02,347 INFO L231 Difference]: Finished difference. Result has 278 places, 982 transitions, 15302 flow [2023-09-01 13:55:02,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=14833, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=973, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15302, PETRI_PLACES=278, PETRI_TRANSITIONS=982} [2023-09-01 13:55:02,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2023-09-01 13:55:02,348 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 982 transitions, 15302 flow [2023-09-01 13:55:02,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 117.8) internal successors, (1767), 15 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:02,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:02,349 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] [2023-09-01 13:55:02,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:02,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-09-01 13:55:02,550 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:02,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:02,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1595059175, now seen corresponding path program 2 times [2023-09-01 13:55:02,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:02,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213760140] [2023-09-01 13:55:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:02,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:02,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:02,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213760140] [2023-09-01 13:55:02,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213760140] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:02,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325611209] [2023-09-01 13:55:02,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:55:02,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:02,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:02,657 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:02,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 13:55:02,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:55:02,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:02,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 13:55:02,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:02,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:02,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325611209] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:02,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:02,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-09-01 13:55:02,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713207226] [2023-09-01 13:55:02,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:02,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 13:55:02,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:02,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 13:55:02,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-09-01 13:55:03,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-09-01 13:55:03,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 982 transitions, 15302 flow. Second operand has 15 states, 15 states have (on average 112.66666666666667) internal successors, (1690), 15 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:03,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:03,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-09-01 13:55:03,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:06,157 INFO L130 PetriNetUnfolder]: 6651/11107 cut-off events. [2023-09-01 13:55:06,157 INFO L131 PetriNetUnfolder]: For 172562/172622 co-relation queries the response was YES. [2023-09-01 13:55:06,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79680 conditions, 11107 events. 6651/11107 cut-off events. For 172562/172622 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 79726 event pairs, 722 based on Foata normal form. 841/11934 useless extension candidates. Maximal degree in co-relation 79563. Up to 6589 conditions per place. [2023-09-01 13:55:06,285 INFO L137 encePairwiseOnDemand]: 260/267 looper letters, 843 selfloop transitions, 104 changer transitions 27/990 dead transitions. [2023-09-01 13:55:06,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 990 transitions, 15933 flow [2023-09-01 13:55:06,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 13:55:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 13:55:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1062 transitions. [2023-09-01 13:55:06,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419475655430712 [2023-09-01 13:55:06,287 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1062 transitions. [2023-09-01 13:55:06,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1062 transitions. [2023-09-01 13:55:06,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:06,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1062 transitions. [2023-09-01 13:55:06,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.0) internal successors, (1062), 9 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:06,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:06,292 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:06,292 INFO L175 Difference]: Start difference. First operand has 278 places, 982 transitions, 15302 flow. Second operand 9 states and 1062 transitions. [2023-09-01 13:55:06,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 990 transitions, 15933 flow [2023-09-01 13:55:07,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 990 transitions, 15750 flow, removed 89 selfloop flow, removed 8 redundant places. [2023-09-01 13:55:07,430 INFO L231 Difference]: Finished difference. Result has 272 places, 716 transitions, 10987 flow [2023-09-01 13:55:07,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=10933, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10987, PETRI_PLACES=272, PETRI_TRANSITIONS=716} [2023-09-01 13:55:07,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2023-09-01 13:55:07,432 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 716 transitions, 10987 flow [2023-09-01 13:55:07,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 112.66666666666667) internal successors, (1690), 15 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:07,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:07,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:07,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:07,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 13:55:07,633 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:07,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:07,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2030722030, now seen corresponding path program 9 times [2023-09-01 13:55:07,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:07,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987563851] [2023-09-01 13:55:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:07,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:07,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:07,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987563851] [2023-09-01 13:55:07,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987563851] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:07,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328609477] [2023-09-01 13:55:07,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:55:07,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:07,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:07,729 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:07,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 13:55:07,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 13:55:07,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:07,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 13:55:07,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:07,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:07,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328609477] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:07,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:07,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-09-01 13:55:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632769322] [2023-09-01 13:55:07,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:07,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 13:55:07,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:07,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 13:55:07,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-09-01 13:55:08,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 267 [2023-09-01 13:55:08,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 716 transitions, 10987 flow. Second operand has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:08,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:08,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 267 [2023-09-01 13:55:08,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:09,824 INFO L130 PetriNetUnfolder]: 4406/7527 cut-off events. [2023-09-01 13:55:09,824 INFO L131 PetriNetUnfolder]: For 133467/134439 co-relation queries the response was YES. [2023-09-01 13:55:09,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55217 conditions, 7527 events. 4406/7527 cut-off events. For 133467/134439 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 53496 event pairs, 1043 based on Foata normal form. 958/8250 useless extension candidates. Maximal degree in co-relation 55105. Up to 4307 conditions per place. [2023-09-01 13:55:09,894 INFO L137 encePairwiseOnDemand]: 261/267 looper letters, 485 selfloop transitions, 27 changer transitions 32/641 dead transitions. [2023-09-01 13:55:09,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 641 transitions, 11079 flow [2023-09-01 13:55:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 13:55:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 13:55:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 989 transitions. [2023-09-01 13:55:09,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46301498127340823 [2023-09-01 13:55:09,895 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 989 transitions. [2023-09-01 13:55:09,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 989 transitions. [2023-09-01 13:55:09,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:09,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 989 transitions. [2023-09-01 13:55:09,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.625) internal successors, (989), 8 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:09,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:09,899 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:09,900 INFO L175 Difference]: Start difference. First operand has 272 places, 716 transitions, 10987 flow. Second operand 8 states and 989 transitions. [2023-09-01 13:55:09,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 641 transitions, 11079 flow [2023-09-01 13:55:10,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 641 transitions, 10652 flow, removed 133 selfloop flow, removed 19 redundant places. [2023-09-01 13:55:10,545 INFO L231 Difference]: Finished difference. Result has 245 places, 543 transitions, 8477 flow [2023-09-01 13:55:10,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=8609, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8477, PETRI_PLACES=245, PETRI_TRANSITIONS=543} [2023-09-01 13:55:10,546 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2023-09-01 13:55:10,546 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 543 transitions, 8477 flow [2023-09-01 13:55:10,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:10,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:10,547 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:10,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:10,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 13:55:10,753 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:10,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1080724745, now seen corresponding path program 10 times [2023-09-01 13:55:10,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:10,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726672769] [2023-09-01 13:55:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:10,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:10,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:10,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726672769] [2023-09-01 13:55:10,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726672769] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:10,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021191467] [2023-09-01 13:55:10,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:55:10,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:10,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:10,873 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:10,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 13:55:10,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:55:10,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:10,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 13:55:10,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:11,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:11,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021191467] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:11,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:11,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2023-09-01 13:55:11,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711821656] [2023-09-01 13:55:11,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:11,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 13:55:11,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:11,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 13:55:11,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-09-01 13:55:11,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 267 [2023-09-01 13:55:11,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 543 transitions, 8477 flow. Second operand has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:11,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:11,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 267 [2023-09-01 13:55:11,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:12,920 INFO L130 PetriNetUnfolder]: 3345/5757 cut-off events. [2023-09-01 13:55:12,920 INFO L131 PetriNetUnfolder]: For 89363/89744 co-relation queries the response was YES. [2023-09-01 13:55:12,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42147 conditions, 5757 events. 3345/5757 cut-off events. For 89363/89744 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 39204 event pairs, 488 based on Foata normal form. 510/6199 useless extension candidates. Maximal degree in co-relation 42048. Up to 2104 conditions per place. [2023-09-01 13:55:12,964 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 261 selfloop transitions, 120 changer transitions 262/655 dead transitions. [2023-09-01 13:55:12,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 655 transitions, 10966 flow [2023-09-01 13:55:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 13:55:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 13:55:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2240 transitions. [2023-09-01 13:55:12,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155332150601223 [2023-09-01 13:55:12,967 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2240 transitions. [2023-09-01 13:55:12,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2240 transitions. [2023-09-01 13:55:12,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:12,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2240 transitions. [2023-09-01 13:55:12,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 117.89473684210526) internal successors, (2240), 19 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:12,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:12,976 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:12,976 INFO L175 Difference]: Start difference. First operand has 245 places, 543 transitions, 8477 flow. Second operand 19 states and 2240 transitions. [2023-09-01 13:55:12,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 655 transitions, 10966 flow [2023-09-01 13:55:13,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 655 transitions, 10592 flow, removed 66 selfloop flow, removed 14 redundant places. [2023-09-01 13:55:13,396 INFO L231 Difference]: Finished difference. Result has 244 places, 333 transitions, 4458 flow [2023-09-01 13:55:13,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7888, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4458, PETRI_PLACES=244, PETRI_TRANSITIONS=333} [2023-09-01 13:55:13,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2023-09-01 13:55:13,397 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 333 transitions, 4458 flow [2023-09-01 13:55:13,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:13,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:13,398 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:13,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:13,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 13:55:13,604 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:13,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:13,604 INFO L85 PathProgramCache]: Analyzing trace with hash -862209951, now seen corresponding path program 11 times [2023-09-01 13:55:13,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:13,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844779660] [2023-09-01 13:55:13,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:13,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:13,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:13,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844779660] [2023-09-01 13:55:13,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844779660] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:13,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272110442] [2023-09-01 13:55:13,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 13:55:13,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:13,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:13,850 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:13,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 13:55:13,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:55:13,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:13,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 13:55:13,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:14,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272110442] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:14,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:14,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-09-01 13:55:14,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436154885] [2023-09-01 13:55:14,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:14,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 13:55:14,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:14,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 13:55:14,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-09-01 13:55:14,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-09-01 13:55:14,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 333 transitions, 4458 flow. Second operand has 19 states, 19 states have (on average 107.52631578947368) internal successors, (2043), 19 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:14,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:14,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-09-01 13:55:14,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:16,790 INFO L130 PetriNetUnfolder]: 3075/4688 cut-off events. [2023-09-01 13:55:16,790 INFO L131 PetriNetUnfolder]: For 75281/75281 co-relation queries the response was YES. [2023-09-01 13:55:16,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38573 conditions, 4688 events. 3075/4688 cut-off events. For 75281/75281 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 24206 event pairs, 160 based on Foata normal form. 28/4716 useless extension candidates. Maximal degree in co-relation 38496. Up to 1638 conditions per place. [2023-09-01 13:55:16,832 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 423 selfloop transitions, 383 changer transitions 0/806 dead transitions. [2023-09-01 13:55:16,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 806 transitions, 12365 flow [2023-09-01 13:55:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-09-01 13:55:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-09-01 13:55:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 5134 transitions. [2023-09-01 13:55:16,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180100960755577 [2023-09-01 13:55:16,838 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 5134 transitions. [2023-09-01 13:55:16,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 5134 transitions. [2023-09-01 13:55:16,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:16,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 5134 transitions. [2023-09-01 13:55:16,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 111.6086956521739) internal successors, (5134), 46 states have internal predecessors, (5134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:16,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 267.0) internal successors, (12549), 47 states have internal predecessors, (12549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:16,855 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 267.0) internal successors, (12549), 47 states have internal predecessors, (12549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:16,855 INFO L175 Difference]: Start difference. First operand has 244 places, 333 transitions, 4458 flow. Second operand 46 states and 5134 transitions. [2023-09-01 13:55:16,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 806 transitions, 12365 flow [2023-09-01 13:55:17,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 806 transitions, 10765 flow, removed 579 selfloop flow, removed 23 redundant places. [2023-09-01 13:55:17,086 INFO L231 Difference]: Finished difference. Result has 225 places, 547 transitions, 8129 flow [2023-09-01 13:55:17,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=3828, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=8129, PETRI_PLACES=225, PETRI_TRANSITIONS=547} [2023-09-01 13:55:17,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2023-09-01 13:55:17,087 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 547 transitions, 8129 flow [2023-09-01 13:55:17,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.52631578947368) internal successors, (2043), 19 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:17,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:17,087 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:17,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:17,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:17,288 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:17,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash 41038503, now seen corresponding path program 12 times [2023-09-01 13:55:17,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:17,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057757628] [2023-09-01 13:55:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:17,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:17,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057757628] [2023-09-01 13:55:17,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057757628] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:17,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83729295] [2023-09-01 13:55:17,411 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 13:55:17,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:17,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:17,413 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:17,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 13:55:17,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 13:55:17,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:17,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:55:17,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:17,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:17,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83729295] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:17,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:17,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-09-01 13:55:17,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849807664] [2023-09-01 13:55:17,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:17,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 13:55:17,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:17,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 13:55:17,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-09-01 13:55:18,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-09-01 13:55:18,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 547 transitions, 8129 flow. Second operand has 19 states, 19 states have (on average 111.15789473684211) internal successors, (2112), 19 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:18,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:18,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-09-01 13:55:18,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:18,991 INFO L130 PetriNetUnfolder]: 3028/4625 cut-off events. [2023-09-01 13:55:18,991 INFO L131 PetriNetUnfolder]: For 94559/94581 co-relation queries the response was YES. [2023-09-01 13:55:19,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40144 conditions, 4625 events. 3028/4625 cut-off events. For 94559/94581 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24151 event pairs, 451 based on Foata normal form. 70/4685 useless extension candidates. Maximal degree in co-relation 40065. Up to 2265 conditions per place. [2023-09-01 13:55:19,035 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 499 selfloop transitions, 155 changer transitions 0/681 dead transitions. [2023-09-01 13:55:19,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 681 transitions, 11461 flow [2023-09-01 13:55:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 13:55:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 13:55:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1049 transitions. [2023-09-01 13:55:19,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43653766125676235 [2023-09-01 13:55:19,038 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1049 transitions. [2023-09-01 13:55:19,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1049 transitions. [2023-09-01 13:55:19,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:19,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1049 transitions. [2023-09-01 13:55:19,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.55555555555556) internal successors, (1049), 9 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:19,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:19,041 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:19,041 INFO L175 Difference]: Start difference. First operand has 225 places, 547 transitions, 8129 flow. Second operand 9 states and 1049 transitions. [2023-09-01 13:55:19,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 681 transitions, 11461 flow [2023-09-01 13:55:19,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 681 transitions, 10339 flow, removed 552 selfloop flow, removed 7 redundant places. [2023-09-01 13:55:19,385 INFO L231 Difference]: Finished difference. Result has 222 places, 536 transitions, 7825 flow [2023-09-01 13:55:19,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6933, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7825, PETRI_PLACES=222, PETRI_TRANSITIONS=536} [2023-09-01 13:55:19,386 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2023-09-01 13:55:19,386 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 536 transitions, 7825 flow [2023-09-01 13:55:19,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 111.15789473684211) internal successors, (2112), 19 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:19,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:19,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:19,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:19,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 13:55:19,587 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:19,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:19,588 INFO L85 PathProgramCache]: Analyzing trace with hash 594494739, now seen corresponding path program 13 times [2023-09-01 13:55:19,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:19,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943238814] [2023-09-01 13:55:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:19,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:19,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:19,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943238814] [2023-09-01 13:55:19,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943238814] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:19,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437468763] [2023-09-01 13:55:19,730 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 13:55:19,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:19,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:19,733 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:19,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 13:55:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:19,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:55:19,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:19,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:20,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437468763] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:20,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:20,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-09-01 13:55:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059337927] [2023-09-01 13:55:20,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:20,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 13:55:20,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:20,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 13:55:20,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-09-01 13:55:20,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-09-01 13:55:20,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 536 transitions, 7825 flow. Second operand has 21 states, 21 states have (on average 110.85714285714286) internal successors, (2328), 21 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:20,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:20,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-09-01 13:55:20,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:21,522 INFO L130 PetriNetUnfolder]: 3159/4854 cut-off events. [2023-09-01 13:55:21,522 INFO L131 PetriNetUnfolder]: For 101629/101667 co-relation queries the response was YES. [2023-09-01 13:55:21,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41653 conditions, 4854 events. 3159/4854 cut-off events. For 101629/101667 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 25958 event pairs, 442 based on Foata normal form. 46/4890 useless extension candidates. Maximal degree in co-relation 41574. Up to 2278 conditions per place. [2023-09-01 13:55:21,575 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 487 selfloop transitions, 235 changer transitions 0/749 dead transitions. [2023-09-01 13:55:21,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 749 transitions, 11854 flow [2023-09-01 13:55:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 13:55:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 13:55:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1641 transitions. [2023-09-01 13:55:21,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4390048154093098 [2023-09-01 13:55:21,578 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1641 transitions. [2023-09-01 13:55:21,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1641 transitions. [2023-09-01 13:55:21,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:21,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1641 transitions. [2023-09-01 13:55:21,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 117.21428571428571) internal successors, (1641), 14 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:21,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 267.0) internal successors, (4005), 15 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:21,583 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 267.0) internal successors, (4005), 15 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:21,583 INFO L175 Difference]: Start difference. First operand has 222 places, 536 transitions, 7825 flow. Second operand 14 states and 1641 transitions. [2023-09-01 13:55:21,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 749 transitions, 11854 flow [2023-09-01 13:55:21,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 749 transitions, 11550 flow, removed 79 selfloop flow, removed 6 redundant places. [2023-09-01 13:55:22,078 INFO L231 Difference]: Finished difference. Result has 234 places, 603 transitions, 9455 flow [2023-09-01 13:55:22,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7590, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9455, PETRI_PLACES=234, PETRI_TRANSITIONS=603} [2023-09-01 13:55:22,079 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2023-09-01 13:55:22,080 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 603 transitions, 9455 flow [2023-09-01 13:55:22,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 110.85714285714286) internal successors, (2328), 21 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:22,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:22,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:22,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:22,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 13:55:22,285 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:22,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:22,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1361094559, now seen corresponding path program 14 times [2023-09-01 13:55:22,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:22,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701265486] [2023-09-01 13:55:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:22,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:22,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:22,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701265486] [2023-09-01 13:55:22,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701265486] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:22,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361332111] [2023-09-01 13:55:22,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:55:22,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:22,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:22,437 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:22,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 13:55:22,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:55:22,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:22,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:55:22,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:22,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:22,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361332111] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:22,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:22,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-09-01 13:55:22,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423860400] [2023-09-01 13:55:22,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:22,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 13:55:22,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 13:55:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-09-01 13:55:23,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-09-01 13:55:23,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 603 transitions, 9455 flow. Second operand has 20 states, 20 states have (on average 111.0) internal successors, (2220), 20 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:23,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:23,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-09-01 13:55:23,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:24,031 INFO L130 PetriNetUnfolder]: 3121/4777 cut-off events. [2023-09-01 13:55:24,032 INFO L131 PetriNetUnfolder]: For 88310/88351 co-relation queries the response was YES. [2023-09-01 13:55:24,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41107 conditions, 4777 events. 3121/4777 cut-off events. For 88310/88351 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 25257 event pairs, 497 based on Foata normal form. 50/4814 useless extension candidates. Maximal degree in co-relation 41025. Up to 2397 conditions per place. [2023-09-01 13:55:24,081 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 484 selfloop transitions, 168 changer transitions 0/679 dead transitions. [2023-09-01 13:55:24,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 679 transitions, 11554 flow [2023-09-01 13:55:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 13:55:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 13:55:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1049 transitions. [2023-09-01 13:55:24,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43653766125676235 [2023-09-01 13:55:24,083 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1049 transitions. [2023-09-01 13:55:24,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1049 transitions. [2023-09-01 13:55:24,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:24,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1049 transitions. [2023-09-01 13:55:24,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.55555555555556) internal successors, (1049), 9 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:24,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:24,087 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:24,087 INFO L175 Difference]: Start difference. First operand has 234 places, 603 transitions, 9455 flow. Second operand 9 states and 1049 transitions. [2023-09-01 13:55:24,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 679 transitions, 11554 flow [2023-09-01 13:55:24,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 679 transitions, 11142 flow, removed 133 selfloop flow, removed 6 redundant places. [2023-09-01 13:55:24,588 INFO L231 Difference]: Finished difference. Result has 234 places, 598 transitions, 9335 flow [2023-09-01 13:55:24,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=8840, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9335, PETRI_PLACES=234, PETRI_TRANSITIONS=598} [2023-09-01 13:55:24,588 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2023-09-01 13:55:24,589 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 598 transitions, 9335 flow [2023-09-01 13:55:24,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 111.0) internal successors, (2220), 20 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:24,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:24,589 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:24,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:24,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 13:55:24,790 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:24,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:24,790 INFO L85 PathProgramCache]: Analyzing trace with hash 649905999, now seen corresponding path program 15 times [2023-09-01 13:55:24,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:24,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698596276] [2023-09-01 13:55:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:24,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:24,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:24,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698596276] [2023-09-01 13:55:24,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698596276] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:24,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295387537] [2023-09-01 13:55:24,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:55:24,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:24,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:24,929 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:24,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 13:55:25,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 13:55:25,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:25,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:55:25,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:25,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:25,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295387537] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:25,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:25,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-09-01 13:55:25,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189921473] [2023-09-01 13:55:25,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:25,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 13:55:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 13:55:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-09-01 13:55:25,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-09-01 13:55:25,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 598 transitions, 9335 flow. Second operand has 22 states, 22 states have (on average 110.81818181818181) internal successors, (2438), 22 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:25,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:25,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-09-01 13:55:25,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:26,605 INFO L130 PetriNetUnfolder]: 3092/4717 cut-off events. [2023-09-01 13:55:26,605 INFO L131 PetriNetUnfolder]: For 79921/79959 co-relation queries the response was YES. [2023-09-01 13:55:26,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40217 conditions, 4717 events. 3092/4717 cut-off events. For 79921/79959 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24762 event pairs, 467 based on Foata normal form. 42/4746 useless extension candidates. Maximal degree in co-relation 40136. Up to 2279 conditions per place. [2023-09-01 13:55:26,656 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 435 selfloop transitions, 226 changer transitions 0/688 dead transitions. [2023-09-01 13:55:26,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 688 transitions, 11590 flow [2023-09-01 13:55:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 13:55:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 13:55:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1169 transitions. [2023-09-01 13:55:26,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4378277153558052 [2023-09-01 13:55:26,659 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1169 transitions. [2023-09-01 13:55:26,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1169 transitions. [2023-09-01 13:55:26,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:26,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1169 transitions. [2023-09-01 13:55:26,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.9) internal successors, (1169), 10 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:26,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:26,663 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:26,663 INFO L175 Difference]: Start difference. First operand has 234 places, 598 transitions, 9335 flow. Second operand 10 states and 1169 transitions. [2023-09-01 13:55:26,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 688 transitions, 11590 flow [2023-09-01 13:55:27,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 688 transitions, 11400 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-09-01 13:55:27,043 INFO L231 Difference]: Finished difference. Result has 236 places, 597 transitions, 9583 flow [2023-09-01 13:55:27,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=9131, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9583, PETRI_PLACES=236, PETRI_TRANSITIONS=597} [2023-09-01 13:55:27,044 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2023-09-01 13:55:27,044 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 597 transitions, 9583 flow [2023-09-01 13:55:27,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 110.81818181818181) internal successors, (2438), 22 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:27,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:27,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:27,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:27,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:27,251 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:27,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1481117643, now seen corresponding path program 16 times [2023-09-01 13:55:27,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:27,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597131472] [2023-09-01 13:55:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:27,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:27,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:27,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597131472] [2023-09-01 13:55:27,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597131472] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:27,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221594612] [2023-09-01 13:55:27,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:55:27,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:27,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:27,395 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:27,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-09-01 13:55:27,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:55:27,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:27,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 13:55:27,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:27,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:27,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221594612] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:27,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:27,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-09-01 13:55:27,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066436191] [2023-09-01 13:55:27,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:27,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 13:55:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 13:55:27,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-09-01 13:55:27,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-09-01 13:55:27,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 597 transitions, 9583 flow. Second operand has 20 states, 20 states have (on average 107.35) internal successors, (2147), 20 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:27,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:27,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-09-01 13:55:27,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:29,840 INFO L130 PetriNetUnfolder]: 3115/4754 cut-off events. [2023-09-01 13:55:29,840 INFO L131 PetriNetUnfolder]: For 84647/84647 co-relation queries the response was YES. [2023-09-01 13:55:29,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40989 conditions, 4754 events. 3115/4754 cut-off events. For 84647/84647 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24750 event pairs, 180 based on Foata normal form. 26/4780 useless extension candidates. Maximal degree in co-relation 40908. Up to 1696 conditions per place. [2023-09-01 13:55:29,890 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 407 selfloop transitions, 416 changer transitions 0/823 dead transitions. [2023-09-01 13:55:29,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 823 transitions, 13916 flow [2023-09-01 13:55:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-09-01 13:55:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-09-01 13:55:29,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4154 transitions. [2023-09-01 13:55:29,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42048790363397104 [2023-09-01 13:55:29,895 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4154 transitions. [2023-09-01 13:55:29,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4154 transitions. [2023-09-01 13:55:29,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:29,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4154 transitions. [2023-09-01 13:55:29,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 112.27027027027027) internal successors, (4154), 37 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:29,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 267.0) internal successors, (10146), 38 states have internal predecessors, (10146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:29,907 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 267.0) internal successors, (10146), 38 states have internal predecessors, (10146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:29,907 INFO L175 Difference]: Start difference. First operand has 236 places, 597 transitions, 9583 flow. Second operand 37 states and 4154 transitions. [2023-09-01 13:55:29,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 823 transitions, 13916 flow [2023-09-01 13:55:30,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 823 transitions, 13428 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-09-01 13:55:30,314 INFO L231 Difference]: Finished difference. Result has 263 places, 604 transitions, 10076 flow [2023-09-01 13:55:30,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=9072, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=10076, PETRI_PLACES=263, PETRI_TRANSITIONS=604} [2023-09-01 13:55:30,316 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2023-09-01 13:55:30,316 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 604 transitions, 10076 flow [2023-09-01 13:55:30,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.35) internal successors, (2147), 20 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:30,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:30,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:30,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:30,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:30,523 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:30,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1869960955, now seen corresponding path program 17 times [2023-09-01 13:55:30,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:30,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540444756] [2023-09-01 13:55:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:30,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:30,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:30,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540444756] [2023-09-01 13:55:30,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540444756] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:30,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442417201] [2023-09-01 13:55:30,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 13:55:30,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:30,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:30,658 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:30,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-09-01 13:55:30,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:55:30,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:30,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 13:55:30,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:30,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:55:30,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442417201] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:30,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:30,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-09-01 13:55:30,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376638972] [2023-09-01 13:55:30,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:30,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 13:55:30,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 13:55:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-09-01 13:55:31,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-09-01 13:55:31,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 604 transitions, 10076 flow. Second operand has 18 states, 18 states have (on average 107.55555555555556) internal successors, (1936), 18 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:31,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:31,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-09-01 13:55:31,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:32,561 INFO L130 PetriNetUnfolder]: 3081/4688 cut-off events. [2023-09-01 13:55:32,561 INFO L131 PetriNetUnfolder]: For 85460/85460 co-relation queries the response was YES. [2023-09-01 13:55:32,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41389 conditions, 4688 events. 3081/4688 cut-off events. For 85460/85460 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24282 event pairs, 315 based on Foata normal form. 26/4714 useless extension candidates. Maximal degree in co-relation 41308. Up to 2764 conditions per place. [2023-09-01 13:55:32,617 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 438 selfloop transitions, 274 changer transitions 0/712 dead transitions. [2023-09-01 13:55:32,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 712 transitions, 12831 flow [2023-09-01 13:55:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 13:55:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 13:55:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2116 transitions. [2023-09-01 13:55:32,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41711019120835796 [2023-09-01 13:55:32,621 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2116 transitions. [2023-09-01 13:55:32,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2116 transitions. [2023-09-01 13:55:32,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:32,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2116 transitions. [2023-09-01 13:55:32,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 111.36842105263158) internal successors, (2116), 19 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:32,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:32,628 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:32,629 INFO L175 Difference]: Start difference. First operand has 263 places, 604 transitions, 10076 flow. Second operand 19 states and 2116 transitions. [2023-09-01 13:55:32,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 712 transitions, 12831 flow [2023-09-01 13:55:33,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 712 transitions, 12072 flow, removed 27 selfloop flow, removed 28 redundant places. [2023-09-01 13:55:33,081 INFO L231 Difference]: Finished difference. Result has 256 places, 607 transitions, 9989 flow [2023-09-01 13:55:33,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=9298, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9989, PETRI_PLACES=256, PETRI_TRANSITIONS=607} [2023-09-01 13:55:33,082 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2023-09-01 13:55:33,082 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 607 transitions, 9989 flow [2023-09-01 13:55:33,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 107.55555555555556) internal successors, (1936), 18 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:33,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:33,083 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:33,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:33,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-09-01 13:55:33,289 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:33,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:33,289 INFO L85 PathProgramCache]: Analyzing trace with hash 166044145, now seen corresponding path program 18 times [2023-09-01 13:55:33,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:33,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163404244] [2023-09-01 13:55:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:33,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:33,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:33,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163404244] [2023-09-01 13:55:33,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163404244] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:33,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322624117] [2023-09-01 13:55:33,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 13:55:33,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:33,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:33,433 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:33,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-09-01 13:55:33,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 13:55:33,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:33,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:55:33,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:33,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:55:33,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322624117] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:55:33,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:55:33,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-09-01 13:55:33,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180414547] [2023-09-01 13:55:33,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:55:33,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 13:55:33,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:55:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 13:55:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-09-01 13:55:34,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-09-01 13:55:34,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 607 transitions, 9989 flow. Second operand has 20 states, 20 states have (on average 111.1) internal successors, (2222), 20 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:34,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:55:34,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-09-01 13:55:34,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:55:35,074 INFO L130 PetriNetUnfolder]: 3000/4557 cut-off events. [2023-09-01 13:55:35,074 INFO L131 PetriNetUnfolder]: For 78722/78771 co-relation queries the response was YES. [2023-09-01 13:55:35,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39100 conditions, 4557 events. 3000/4557 cut-off events. For 78722/78771 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 23584 event pairs, 402 based on Foata normal form. 55/4605 useless extension candidates. Maximal degree in co-relation 39016. Up to 1849 conditions per place. [2023-09-01 13:55:35,125 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 349 selfloop transitions, 285 changer transitions 0/662 dead transitions. [2023-09-01 13:55:35,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 662 transitions, 11787 flow [2023-09-01 13:55:35,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 13:55:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 13:55:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1048 transitions. [2023-09-01 13:55:35,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43612151477320016 [2023-09-01 13:55:35,126 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1048 transitions. [2023-09-01 13:55:35,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1048 transitions. [2023-09-01 13:55:35,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:55:35,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1048 transitions. [2023-09-01 13:55:35,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:35,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:35,129 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:35,129 INFO L175 Difference]: Start difference. First operand has 256 places, 607 transitions, 9989 flow. Second operand 9 states and 1048 transitions. [2023-09-01 13:55:35,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 662 transitions, 11787 flow [2023-09-01 13:55:35,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 662 transitions, 11340 flow, removed 0 selfloop flow, removed 16 redundant places. [2023-09-01 13:55:35,491 INFO L231 Difference]: Finished difference. Result has 245 places, 599 transitions, 10005 flow [2023-09-01 13:55:35,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=9435, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10005, PETRI_PLACES=245, PETRI_TRANSITIONS=599} [2023-09-01 13:55:35,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2023-09-01 13:55:35,492 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 599 transitions, 10005 flow [2023-09-01 13:55:35,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 111.1) internal successors, (2222), 20 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:55:35,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:55:35,493 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:55:35,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-09-01 13:55:35,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-09-01 13:55:35,693 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:55:35,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:55:35,694 INFO L85 PathProgramCache]: Analyzing trace with hash -567491001, now seen corresponding path program 3 times [2023-09-01 13:55:35,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:55:35,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746017123] [2023-09-01 13:55:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:55:35,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:55:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:55:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:55:38,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:55:38,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746017123] [2023-09-01 13:55:38,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746017123] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:55:38,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807705369] [2023-09-01 13:55:38,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:55:38,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:55:38,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:55:38,543 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:55:38,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-09-01 13:55:38,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 13:55:38,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:55:38,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 59 conjunts are in the unsatisfiable core [2023-09-01 13:55:38,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:55:38,792 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 [2023-09-01 13:55:38,880 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 [2023-09-01 13:55:39,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:55:39,308 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 86 treesize of output 70 [2023-09-01 13:55:39,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:55:39,554 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 86 treesize of output 70 [2023-09-01 13:55:40,634 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:55:40,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 89 [2023-09-01 13:55:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:55:41,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:55:44,656 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse8 (+ c_~min1~0 1))) (let ((.cse2 (<= c_~min3~0 c_~min1~0)) (.cse3 (<= c_~min1~0 c_~min3~0)) (.cse1 (<= c_~min1~0 c_~min2~0)) (.cse0 (< c_~min2~0 .cse8))) (and (or (and (<= c_~min2~0 c_~min3~0) .cse0 .cse1) (and .cse2 .cse1 .cse3) (forall ((v_thread3Thread1of1ForFork0_~i~2_109 Int) (v_ArrVal_1041 (Array Int Int)) (v_ArrVal_1040 (Array Int Int))) (let ((.cse4 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1041) c_~A~0.base))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_109) (< (select .cse4 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_109 4))) c_~min3~0) (< (select .cse4 c_~A~0.offset) c_~min2~0) (< (+ v_thread3Thread1of1ForFork0_~i~2_109 1) c_~N~0))))) (forall ((v_ArrVal_1041 (Array Int Int)) (v_ArrVal_1040 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1041) c_~A~0.base))) (let ((.cse7 (select .cse6 c_~A~0.offset))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_109 Int)) (let ((.cse5 (select .cse6 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_109 4))))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_109) (<= c_~min3~0 .cse5) (<= .cse5 c_~min1~0) (< (+ v_thread3Thread1of1ForFork0_~i~2_109 1) c_~N~0)))) (<= c_~min2~0 .cse7) (< .cse7 .cse8))))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_109 Int) (v_ArrVal_1041 (Array Int Int)) (v_ArrVal_1040 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1041) c_~A~0.base))) (let ((.cse9 (select .cse10 c_~A~0.offset))) (or (<= c_~min2~0 .cse9) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_109) (< (select .cse10 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_109 4))) c_~min3~0) (< .cse9 .cse8) (< (+ v_thread3Thread1of1ForFork0_~i~2_109 1) c_~N~0))))) .cse2) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_109 Int) (v_ArrVal_1041 (Array Int Int)) (v_ArrVal_1040 (Array Int Int))) (let ((.cse12 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1041) c_~A~0.base))) (let ((.cse11 (select .cse12 c_~A~0.offset))) (or (<= c_~min2~0 .cse11) (<= .cse11 c_~min3~0) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_109) (< (select .cse12 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_109 4))) c_~min3~0) (< (+ v_thread3Thread1of1ForFork0_~i~2_109 1) c_~N~0))))) .cse3) (or .cse1 (forall ((v_thread3Thread1of1ForFork0_~i~2_109 Int) (v_ArrVal_1041 (Array Int Int)) (v_ArrVal_1040 (Array Int Int))) (let ((.cse13 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1041) c_~A~0.base))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_109) (<= c_~min3~0 (select .cse13 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_109 4)))) (< (select .cse13 c_~A~0.offset) c_~min2~0) (< (+ v_thread3Thread1of1ForFork0_~i~2_109 1) c_~N~0))))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_109 Int) (v_ArrVal_1041 (Array Int Int)) (v_ArrVal_1040 (Array Int Int))) (let ((.cse15 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1041) c_~A~0.base))) (let ((.cse14 (select .cse15 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_109 4))))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_109) (<= c_~min3~0 .cse14) (< (select .cse15 c_~A~0.offset) c_~min2~0) (<= .cse14 c_~min1~0) (< (+ v_thread3Thread1of1ForFork0_~i~2_109 1) c_~N~0))))) .cse0) (forall ((v_ArrVal_1041 (Array Int Int)) (v_ArrVal_1040 (Array Int Int))) (let ((.cse18 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1041) c_~A~0.base))) (let ((.cse16 (select .cse18 c_~A~0.offset))) (or (<= c_~min2~0 .cse16) (forall ((v_thread3Thread1of1ForFork0_~i~2_109 Int)) (let ((.cse17 (select .cse18 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_109 4))))) (or (<= c_~min1~0 .cse17) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_109) (<= c_~min3~0 .cse17) (< (+ v_thread3Thread1of1ForFork0_~i~2_109 1) c_~N~0) (<= .cse16 .cse17)))))))) (forall ((v_ArrVal_1041 (Array Int Int)) (v_ArrVal_1040 (Array Int Int))) (let ((.cse20 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1041) c_~A~0.base))) (let ((.cse19 (select .cse20 c_~A~0.offset))) (or (<= c_~min2~0 .cse19) (forall ((v_thread3Thread1of1ForFork0_~i~2_109 Int)) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_109) (<= c_~min3~0 (select .cse20 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_109 4)))) (< (+ v_thread3Thread1of1ForFork0_~i~2_109 1) c_~N~0))) (<= c_~min1~0 .cse19))))) (forall ((v_ArrVal_1041 (Array Int Int)) (v_ArrVal_1040 (Array Int Int))) (let ((.cse21 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1041) c_~A~0.base))) (or (< (select .cse21 c_~A~0.offset) c_~min2~0) (forall ((v_thread3Thread1of1ForFork0_~i~2_109 Int)) (let ((.cse22 (select .cse21 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_109 4))))) (or (<= c_~min1~0 .cse22) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_109) (<= c_~min3~0 .cse22) (<= c_~min2~0 .cse22) (< (+ v_thread3Thread1of1ForFork0_~i~2_109 1) c_~N~0))))))) (forall ((v_thread3Thread1of1ForFork0_~i~2_109 Int) (v_ArrVal_1040 (Array Int Int))) (or (forall ((v_ArrVal_1041 (Array Int Int))) (let ((.cse24 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1041) c_~A~0.base))) (let ((.cse23 (select .cse24 c_~A~0.offset))) (or (<= c_~min2~0 .cse23) (< (select .cse24 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_109 4))) c_~min3~0) (<= c_~min1~0 .cse23))))) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_109) (< (+ v_thread3Thread1of1ForFork0_~i~2_109 1) c_~N~0)))))) is different from false [2023-09-01 13:56:17,335 WARN L222 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 250 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 13:56:19,162 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:19,163 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 182 treesize of output 110 [2023-09-01 13:56:19,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:19,184 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 1303 treesize of output 1167 [2023-09-01 13:56:19,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:19,234 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 258 treesize of output 246 [2023-09-01 13:56:19,266 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:19,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 210 treesize of output 190 [2023-09-01 13:56:19,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:19,290 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 242 treesize of output 210 [2023-09-01 13:56:21,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:21,283 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 201 treesize of output 117 [2023-09-01 13:56:21,319 INFO L321 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2023-09-01 13:56:21,319 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 5101 treesize of output 4548 [2023-09-01 13:56:21,381 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:21,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:21,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 291 treesize of output 261 [2023-09-01 13:56:21,428 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:21,429 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 170 treesize of output 158 [2023-09-01 13:56:21,467 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:21,468 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 187 treesize of output 155 [2023-09-01 13:56:22,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:22,063 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 156 treesize of output 96 [2023-09-01 13:56:22,091 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:22,092 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 2414 treesize of output 2136 [2023-09-01 13:56:22,161 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:56:22,161 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 180 treesize of output 164 [2023-09-01 13:56:22,209 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:22,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 242 treesize of output 214 [2023-09-01 13:56:22,241 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:56:22,241 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 179 treesize of output 143 [2023-09-01 13:56:22,573 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:22,574 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 148 treesize of output 1 [2023-09-01 13:56:22,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:22,593 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 148 treesize of output 88 [2023-09-01 13:56:22,600 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:22,601 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:22,618 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:22,618 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 124 treesize of output 98 [2023-09-01 13:56:22,637 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:22,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 40 [2023-09-01 13:56:22,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:22,707 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 131 treesize of output 83 [2023-09-01 13:56:22,714 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:22,714 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:22,731 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:22,732 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 122 treesize of output 110 [2023-09-01 13:56:22,756 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:22,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 52 [2023-09-01 13:56:23,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:23,338 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 107 treesize of output 71 [2023-09-01 13:56:23,344 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:23,344 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:23,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:23,360 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 97 treesize of output 91 [2023-09-01 13:56:23,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:23,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 45 [2023-09-01 13:56:23,593 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:23,594 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 217 treesize of output 1 [2023-09-01 13:56:23,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:23,614 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 150 treesize of output 90 [2023-09-01 13:56:23,621 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:23,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:23,640 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:23,640 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 128 treesize of output 112 [2023-09-01 13:56:23,675 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:23,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 52 [2023-09-01 13:56:24,002 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:24,003 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 150 treesize of output 90 [2023-09-01 13:56:24,011 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,011 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,030 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:24,031 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 128 treesize of output 100 [2023-09-01 13:56:24,090 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:24,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 40 [2023-09-01 13:56:24,147 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:24,147 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 230 treesize of output 134 [2023-09-01 13:56:24,156 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,156 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,179 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-09-01 13:56:24,179 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 273 treesize of output 206 [2023-09-01 13:56:24,208 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:24,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 49 [2023-09-01 13:56:24,280 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:24,280 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 234 treesize of output 1 [2023-09-01 13:56:24,312 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:24,312 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 135 treesize of output 87 [2023-09-01 13:56:24,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,340 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:24,341 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 118 treesize of output 96 [2023-09-01 13:56:24,388 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:24,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 40 [2023-09-01 13:56:24,445 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:24,445 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 157 treesize of output 1 [2023-09-01 13:56:24,472 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:24,472 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 172 treesize of output 1 [2023-09-01 13:56:24,506 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:24,506 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 150 treesize of output 1 [2023-09-01 13:56:24,527 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:24,528 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 137 treesize of output 89 [2023-09-01 13:56:24,537 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,537 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,556 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:24,556 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 122 treesize of output 100 [2023-09-01 13:56:24,586 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:24,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 42 [2023-09-01 13:56:24,663 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:24,664 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 178 treesize of output 106 [2023-09-01 13:56:24,673 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,674 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,692 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:24,692 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 149 treesize of output 117 [2023-09-01 13:56:24,760 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:24,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 47 [2023-09-01 13:56:24,839 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:24,839 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 156 treesize of output 1 [2023-09-01 13:56:24,868 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:24,869 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 172 treesize of output 1 [2023-09-01 13:56:24,891 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:24,891 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 150 treesize of output 1 [2023-09-01 13:56:24,928 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:24,928 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 148 treesize of output 88 [2023-09-01 13:56:24,938 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,938 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:24,959 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:24,959 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 124 treesize of output 98 [2023-09-01 13:56:25,006 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:25,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 40 [2023-09-01 13:56:25,068 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:25,068 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 139 treesize of output 91 [2023-09-01 13:56:25,078 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:25,078 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:25,101 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:25,101 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 126 treesize of output 100 [2023-09-01 13:56:25,131 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:25,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 40 [2023-09-01 13:56:25,239 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:25,239 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 176 treesize of output 104 [2023-09-01 13:56:25,249 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:25,250 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:25,272 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:25,272 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 124 treesize of output 98 [2023-09-01 13:56:25,302 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:25,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 40 [2023-09-01 13:56:25,391 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,391 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 169 treesize of output 1 [2023-09-01 13:56:25,449 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:56:25,449 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 107 treesize of output 71 [2023-09-01 13:56:25,459 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:25,460 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:56:25,482 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:25,482 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 97 treesize of output 79 [2023-09-01 13:56:25,518 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-09-01 13:56:25,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 33 [2023-09-01 13:56:25,616 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,617 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 226 treesize of output 1 [2023-09-01 13:56:25,651 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,651 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 155 treesize of output 1 [2023-09-01 13:56:25,678 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,678 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 173 treesize of output 1 [2023-09-01 13:56:25,716 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,716 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 205 treesize of output 1 [2023-09-01 13:56:25,751 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,752 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 176 treesize of output 1 [2023-09-01 13:56:25,783 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,784 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 135 treesize of output 1 [2023-09-01 13:56:25,834 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,835 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 131 treesize of output 1 [2023-09-01 13:56:25,866 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,866 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 175 treesize of output 1 [2023-09-01 13:56:25,907 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,908 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 171 treesize of output 1 [2023-09-01 13:56:25,939 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,940 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 196 treesize of output 1 [2023-09-01 13:56:25,980 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:25,981 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 236 treesize of output 1 [2023-09-01 13:56:26,021 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 1 [2023-09-01 13:56:26,052 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,053 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 155 treesize of output 1 [2023-09-01 13:56:26,095 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,096 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 201 treesize of output 1 [2023-09-01 13:56:26,137 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,138 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 157 treesize of output 1 [2023-09-01 13:56:26,173 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,174 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 176 treesize of output 1 [2023-09-01 13:56:26,216 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,216 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 211 treesize of output 1 [2023-09-01 13:56:26,253 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,253 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 131 treesize of output 1 [2023-09-01 13:56:26,289 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,290 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 173 treesize of output 1 [2023-09-01 13:56:26,332 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,333 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 174 treesize of output 1 [2023-09-01 13:56:26,365 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,366 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 148 treesize of output 1 [2023-09-01 13:56:26,406 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,406 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 192 treesize of output 1 [2023-09-01 13:56:26,445 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,445 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 209 treesize of output 1 [2023-09-01 13:56:26,482 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,482 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 175 treesize of output 1 [2023-09-01 13:56:26,510 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,510 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 159 treesize of output 1 [2023-09-01 13:56:26,548 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,548 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 197 treesize of output 1 [2023-09-01 13:56:26,585 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,585 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 211 treesize of output 1 [2023-09-01 13:56:26,637 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,637 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 186 treesize of output 1 [2023-09-01 13:56:26,670 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,670 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 131 treesize of output 1 [2023-09-01 13:56:26,701 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 13:56:26,701 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 135 treesize of output 1 [2023-09-01 13:56:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:56:27,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807705369] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:56:27,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:56:27,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2023-09-01 13:56:27,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468074649] [2023-09-01 13:56:27,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:56:27,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-09-01 13:56:27,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:56:27,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-09-01 13:56:27,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1394, Unknown=18, NotChecked=76, Total=1640 [2023-09-01 13:56:28,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-09-01 13:56:28,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 599 transitions, 10005 flow. Second operand has 41 states, 41 states have (on average 70.82926829268293) internal successors, (2904), 41 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:56:28,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:56:28,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-09-01 13:56:28,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:57:02,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:09,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:11,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:14,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:16,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:18,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:20,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:22,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:24,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:47,062 WARN L222 SmtUtils]: Spent 18.31s on a formula simplification. DAG size of input: 113 DAG size of output: 88 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 13:57:49,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:51,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:53,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:57:54,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:58:03,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:58:05,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:58:08,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:58:11,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:58:14,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 13:58:16,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:00:54,898 WARN L222 SmtUtils]: Spent 2.55m on a formula simplification. DAG size of input: 326 DAG size of output: 192 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:00:57,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:00:59,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:01:02,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:02:20,314 WARN L222 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 279 DAG size of output: 178 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:02:22,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:02:28,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:02:34,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:02:37,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:02:41,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:02:43,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:02:49,743 WARN L222 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 336 DAG size of output: 138 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:02:51,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:02:54,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:02:56,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:03:14,588 WARN L222 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 300 DAG size of output: 137 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:03:16,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:03:18,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:03:38,066 WARN L222 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 301 DAG size of output: 132 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:03:44,616 WARN L222 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 297 DAG size of output: 125 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:03:47,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:03:50,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:03:52,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:06:24,303 WARN L222 SmtUtils]: Spent 2.20m on a formula simplification. DAG size of input: 326 DAG size of output: 221 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:06:26,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:06:28,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:06:30,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:06:32,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:06:34,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:06:36,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:07:39,844 WARN L222 SmtUtils]: Spent 42.68s on a formula simplification. DAG size of input: 279 DAG size of output: 180 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15