./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 TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 03:07:36,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 03:07:36,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 03:07:36,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 03:07:36,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 03:07:36,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 03:07:36,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 03:07:36,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 03:07:36,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 03:07:36,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 03:07:36,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 03:07:36,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 03:07:36,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 03:07:36,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 03:07:36,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 03:07:36,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 03:07:36,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 03:07:36,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 03:07:36,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 03:07:36,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 03:07:36,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 03:07:36,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 03:07:36,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 03:07:36,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 03:07:36,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 03:07:36,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 03:07:36,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 03:07:36,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 03:07:36,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 03:07:36,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 03:07:36,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 03:07:36,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 03:07:36,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 03:07:36,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 03:07:36,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 03:07:36,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 03:07:36,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 03:07:36,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 03:07:36,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 03:07:36,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 03:07:36,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 03:07:36,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 03:07:36,692 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 03:07:36,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 03:07:36,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 03:07:36,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 03:07:36,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 03:07:36,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 03:07:36,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 03:07:36,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 03:07:36,695 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 03:07:36,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 03:07:36,695 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 03:07:36,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 03:07:36,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 03:07:36,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 03:07:36,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 03:07:36,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 03:07:36,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 03:07:36,696 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 03:07:36,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 03:07:36,697 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 03:07:36,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 03:07:36,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 03:07:36,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 03:07:36,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 03:07:36,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:07:36,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 03:07:36,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 03:07:36,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 03:07:36,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 03:07:36,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 03:07:36,698 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 03:07:36,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 03:07:36,698 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 03:07:36,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 03:07:36,699 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 03:07:36,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 03:07:36,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 03:07:36,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 03:07:36,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 03:07:36,970 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 03:07:36,970 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 03:07:36,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2023-08-31 03:07:38,050 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 03:07:38,214 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 03:07:38,215 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2023-08-31 03:07:38,220 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a488168e/fe56acf2fb1f43ff85b6bbac8ebc0174/FLAG57824f2df [2023-08-31 03:07:38,239 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a488168e/fe56acf2fb1f43ff85b6bbac8ebc0174 [2023-08-31 03:07:38,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 03:07:38,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 03:07:38,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 03:07:38,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 03:07:38,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 03:07:38,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f315f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38, skipping insertion in model container [2023-08-31 03:07:38,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 03:07:38,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 03:07:38,399 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] [2023-08-31 03:07:38,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:07:38,415 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 03:07:38,428 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] [2023-08-31 03:07:38,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:07:38,434 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 03:07:38,434 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 03:07:38,438 INFO L208 MainTranslator]: Completed translation [2023-08-31 03:07:38,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38 WrapperNode [2023-08-31 03:07:38,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 03:07:38,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 03:07:38,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 03:07:38,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 03:07:38,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,461 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2023-08-31 03:07:38,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 03:07:38,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 03:07:38,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 03:07:38,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 03:07:38,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,478 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 03:07:38,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 03:07:38,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 03:07:38,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 03:07:38,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (1/1) ... [2023-08-31 03:07:38,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:07:38,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:07:38,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 03:07:38,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 03:07:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 03:07:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 03:07:38,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 03:07:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 03:07:38,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 03:07:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 03:07:38,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 03:07:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 03:07:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 03:07:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 03:07:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 03:07:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 03:07:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 03:07:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 03:07:38,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 03:07:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 03:07:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 03:07:38,554 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 03:07:38,655 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 03:07:38,656 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 03:07:38,858 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 03:07:38,911 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 03:07:38,913 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-31 03:07:38,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:07:38 BoogieIcfgContainer [2023-08-31 03:07:38,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 03:07:38,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 03:07:38,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 03:07:38,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 03:07:38,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 03:07:38" (1/3) ... [2023-08-31 03:07:38,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffe5c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:07:38, skipping insertion in model container [2023-08-31 03:07:38,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:07:38" (2/3) ... [2023-08-31 03:07:38,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffe5c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:07:38, skipping insertion in model container [2023-08-31 03:07:38,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:07:38" (3/3) ... [2023-08-31 03:07:38,926 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2023-08-31 03:07:38,937 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 03:07:38,944 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 03:07:38,944 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 03:07:38,944 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 03:07:39,024 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 03:07:39,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 145 transitions, 314 flow [2023-08-31 03:07:39,148 INFO L130 PetriNetUnfolder]: 12/142 cut-off events. [2023-08-31 03:07:39,149 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:07:39,153 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. [2023-08-31 03:07:39,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 145 transitions, 314 flow [2023-08-31 03:07:39,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 132 transitions, 282 flow [2023-08-31 03:07:39,162 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 03:07:39,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 132 transitions, 282 flow [2023-08-31 03:07:39,180 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 132 transitions, 282 flow [2023-08-31 03:07:39,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 282 flow [2023-08-31 03:07:39,211 INFO L130 PetriNetUnfolder]: 12/132 cut-off events. [2023-08-31 03:07:39,212 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:07:39,214 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. [2023-08-31 03:07:39,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-08-31 03:07:43,222 INFO L134 LiptonReduction]: Checked pairs total: 1523 [2023-08-31 03:07:43,223 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-31 03:07:43,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 03:07:43,235 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;@230bbe12, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 03:07:43,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 03:07:43,239 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-08-31 03:07:43,240 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:07:43,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:07:43,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:07:43,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:07:43,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:07:43,244 INFO L85 PathProgramCache]: Analyzing trace with hash -924859563, now seen corresponding path program 1 times [2023-08-31 03:07:43,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:07:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560353525] [2023-08-31 03:07:43,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:07:43,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:07:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:07:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:07:43,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:07:43,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560353525] [2023-08-31 03:07:43,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560353525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:07:43,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:07:43,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 03:07:43,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659022696] [2023-08-31 03:07:43,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:07:43,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 03:07:43,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:07:43,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 03:07:43,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 03:07:44,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-08-31 03:07:44,007 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) [2023-08-31 03:07:44,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:07:44,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-08-31 03:07:44,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:07:44,168 INFO L130 PetriNetUnfolder]: 514/733 cut-off events. [2023-08-31 03:07:44,168 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-31 03:07:44,170 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. [2023-08-31 03:07:44,173 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 50 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2023-08-31 03:07:44,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 288 flow [2023-08-31 03:07:44,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 03:07:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 03:07:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 960 transitions. [2023-08-31 03:07:44,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449438202247191 [2023-08-31 03:07:44,187 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 960 transitions. [2023-08-31 03:07:44,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 960 transitions. [2023-08-31 03:07:44,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:07:44,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 960 transitions. [2023-08-31 03:07:44,195 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) [2023-08-31 03:07:44,202 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) [2023-08-31 03:07:44,203 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) [2023-08-31 03:07:44,204 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 8 states and 960 transitions. [2023-08-31 03:07:44,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 288 flow [2023-08-31 03:07:44,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 62 transitions, 260 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 03:07:44,210 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 118 flow [2023-08-31 03:07:44,211 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} [2023-08-31 03:07:44,215 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-31 03:07:44,216 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 118 flow [2023-08-31 03:07:44,216 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) [2023-08-31 03:07:44,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:07:44,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:07:44,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 03:07:44,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:07:44,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:07:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1563909876, now seen corresponding path program 1 times [2023-08-31 03:07:44,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:07:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515033074] [2023-08-31 03:07:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:07:44,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:07:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:07:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:07:44,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:07:44,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515033074] [2023-08-31 03:07:44,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515033074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:07:44,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761234424] [2023-08-31 03:07:44,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:07:44,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:07:44,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:07:44,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:07:44,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 03:07:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:07:44,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 03:07:44,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:07:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:07:44,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:07:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:07:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761234424] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 03:07:44,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 03:07:44,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-31 03:07:44,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165979118] [2023-08-31 03:07:44,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:07:44,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 03:07:44,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:07:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 03:07:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-31 03:07:44,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 267 [2023-08-31 03:07:44,561 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) [2023-08-31 03:07:44,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:07:44,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 267 [2023-08-31 03:07:44,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:07:44,654 INFO L130 PetriNetUnfolder]: 451/682 cut-off events. [2023-08-31 03:07:44,654 INFO L131 PetriNetUnfolder]: For 378/418 co-relation queries the response was YES. [2023-08-31 03:07:44,656 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. [2023-08-31 03:07:44,658 INFO L137 encePairwiseOnDemand]: 262/267 looper letters, 37 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-31 03:07:44,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 256 flow [2023-08-31 03:07:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:07:44,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:07:44,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 609 transitions. [2023-08-31 03:07:44,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45617977528089887 [2023-08-31 03:07:44,660 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 609 transitions. [2023-08-31 03:07:44,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 609 transitions. [2023-08-31 03:07:44,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:07:44,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 609 transitions. [2023-08-31 03:07:44,662 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) [2023-08-31 03:07:44,663 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) [2023-08-31 03:07:44,664 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) [2023-08-31 03:07:44,664 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 118 flow. Second operand 5 states and 609 transitions. [2023-08-31 03:07:44,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 256 flow [2023-08-31 03:07:44,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 245 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-31 03:07:44,666 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 127 flow [2023-08-31 03:07:44,666 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} [2023-08-31 03:07:44,667 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-08-31 03:07:44,667 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 127 flow [2023-08-31 03:07:44,668 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) [2023-08-31 03:07:44,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:07:44,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:07:44,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 03:07:44,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:07:44,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:07:44,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:07:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1717822039, now seen corresponding path program 1 times [2023-08-31 03:07:44,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:07:44,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059425220] [2023-08-31 03:07:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:07:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:07:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:07:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:07:45,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:07:45,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059425220] [2023-08-31 03:07:45,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059425220] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:07:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654458656] [2023-08-31 03:07:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:07:45,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:07:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:07:45,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:07:45,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 03:07:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:07:46,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-31 03:07:46,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:07:46,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 03:07:46,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 03:07:46,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 03:07:46,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 03:07:46,635 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-31 03:07:46,635 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 [2023-08-31 03:07:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:07:46,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:07:47,778 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 [2023-08-31 03:07:48,012 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 [2023-08-31 03:07:49,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:49,567 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 [2023-08-31 03:07:49,578 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:49,579 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 [2023-08-31 03:07:49,599 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:49,600 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 [2023-08-31 03:07:49,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:49,618 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 [2023-08-31 03:07:49,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:49,642 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 [2023-08-31 03:07:51,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:51,112 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 [2023-08-31 03:07:51,135 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:07:51,135 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 [2023-08-31 03:07:51,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:07:51,201 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 [2023-08-31 03:07:51,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:07:51,211 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 [2023-08-31 03:07:51,226 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:07:51,226 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 [2023-08-31 03:07:51,526 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:51,526 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 [2023-08-31 03:07:51,537 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:07:51,537 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 [2023-08-31 03:07:51,568 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:07:51,569 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 [2023-08-31 03:07:51,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:07:51,594 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 [2023-08-31 03:07:51,608 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:07:51,608 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 [2023-08-31 03:07:51,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:51,787 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 [2023-08-31 03:07:51,807 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:07:51,807 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 [2023-08-31 03:07:51,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:07:51,863 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 [2023-08-31 03:07:51,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:07:51,873 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 [2023-08-31 03:07:51,970 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:07:51,971 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 [2023-08-31 03:07:52,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:52,150 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 [2023-08-31 03:07:52,170 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:07:52,170 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 [2023-08-31 03:07:52,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:07:52,202 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 [2023-08-31 03:07:52,213 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:07:52,214 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 [2023-08-31 03:07:52,234 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:07:52,235 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 [2023-08-31 03:07:52,333 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:07:52,334 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 [2023-08-31 03:07:52,344 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:07:52,344 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 [2023-08-31 03:07:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:07:52,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654458656] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:07:52,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:07:52,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 29 [2023-08-31 03:07:52,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197004291] [2023-08-31 03:07:52,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:07:52,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-31 03:07:52,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:07:52,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-31 03:07:52,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=689, Unknown=2, NotChecked=110, Total=930 [2023-08-31 03:07:52,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-08-31 03:07:52,543 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) [2023-08-31 03:07:52,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:07:52,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-08-31 03:07:52,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:07:54,979 INFO L130 PetriNetUnfolder]: 1091/1613 cut-off events. [2023-08-31 03:07:54,979 INFO L131 PetriNetUnfolder]: For 1313/1313 co-relation queries the response was YES. [2023-08-31 03:07:54,981 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. [2023-08-31 03:07:54,988 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 108 selfloop transitions, 67 changer transitions 13/188 dead transitions. [2023-08-31 03:07:54,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 188 transitions, 1077 flow [2023-08-31 03:07:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-31 03:07:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-31 03:07:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1906 transitions. [2023-08-31 03:07:54,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2855430711610487 [2023-08-31 03:07:54,993 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1906 transitions. [2023-08-31 03:07:54,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1906 transitions. [2023-08-31 03:07:54,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:07:54,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1906 transitions. [2023-08-31 03:07:54,998 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) [2023-08-31 03:07:55,004 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) [2023-08-31 03:07:55,005 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) [2023-08-31 03:07:55,005 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 127 flow. Second operand 25 states and 1906 transitions. [2023-08-31 03:07:55,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 188 transitions, 1077 flow [2023-08-31 03:07:55,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 188 transitions, 1016 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-31 03:07:55,013 INFO L231 Difference]: Finished difference. Result has 73 places, 96 transitions, 619 flow [2023-08-31 03:07:55,013 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} [2023-08-31 03:07:55,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2023-08-31 03:07:55,015 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 96 transitions, 619 flow [2023-08-31 03:07:55,015 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) [2023-08-31 03:07:55,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:07:55,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:07:55,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 03:07:55,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-31 03:07:55,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:07:55,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:07:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1797774933, now seen corresponding path program 2 times [2023-08-31 03:07:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:07:55,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185024183] [2023-08-31 03:07:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:07:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:07:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:07:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:07:55,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:07:55,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185024183] [2023-08-31 03:07:55,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185024183] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:07:55,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511258732] [2023-08-31 03:07:55,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:07:55,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:07:55,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:07:55,807 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:07:55,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 03:07:55,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:07:55,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:07:55,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-31 03:07:55,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:07:56,159 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:07:56,161 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:56,161 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 [2023-08-31 03:07:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:07:56,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:07:56,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:56,488 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 [2023-08-31 03:07:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:07:56,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511258732] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:07:56,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:07:56,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-08-31 03:07:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401519465] [2023-08-31 03:07:56,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:07:56,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-31 03:07:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:07:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-31 03:07:56,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2023-08-31 03:07:57,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 267 [2023-08-31 03:07:57,649 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) [2023-08-31 03:07:57,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:07:57,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 267 [2023-08-31 03:07:57,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:07:58,568 INFO L130 PetriNetUnfolder]: 1348/2024 cut-off events. [2023-08-31 03:07:58,568 INFO L131 PetriNetUnfolder]: For 4141/4189 co-relation queries the response was YES. [2023-08-31 03:07:58,574 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. [2023-08-31 03:07:58,606 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 109 selfloop transitions, 69 changer transitions 4/189 dead transitions. [2023-08-31 03:07:58,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 189 transitions, 1397 flow [2023-08-31 03:07:58,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 03:07:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 03:07:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1212 transitions. [2023-08-31 03:07:58,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41266598569969354 [2023-08-31 03:07:58,609 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1212 transitions. [2023-08-31 03:07:58,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1212 transitions. [2023-08-31 03:07:58,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:07:58,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1212 transitions. [2023-08-31 03:07:58,611 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) [2023-08-31 03:07:58,614 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) [2023-08-31 03:07:58,614 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) [2023-08-31 03:07:58,615 INFO L175 Difference]: Start difference. First operand has 73 places, 96 transitions, 619 flow. Second operand 11 states and 1212 transitions. [2023-08-31 03:07:58,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 189 transitions, 1397 flow [2023-08-31 03:07:58,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 189 transitions, 1376 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-31 03:07:58,628 INFO L231 Difference]: Finished difference. Result has 86 places, 128 transitions, 1055 flow [2023-08-31 03:07:58,628 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} [2023-08-31 03:07:58,629 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-08-31 03:07:58,629 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 128 transitions, 1055 flow [2023-08-31 03:07:58,630 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) [2023-08-31 03:07:58,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:07:58,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:07:58,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 03:07:58,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:07:58,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:07:58,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:07:58,836 INFO L85 PathProgramCache]: Analyzing trace with hash 184588913, now seen corresponding path program 3 times [2023-08-31 03:07:58,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:07:58,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652665867] [2023-08-31 03:07:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:07:58,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:07:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:07:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:07:59,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:07:59,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652665867] [2023-08-31 03:07:59,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652665867] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:07:59,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123694904] [2023-08-31 03:07:59,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:07:59,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:07:59,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:07:59,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:07:59,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 03:07:59,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:07:59,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:07:59,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-31 03:07:59,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:07:59,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:07:59,846 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 [2023-08-31 03:07:59,981 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:07:59,988 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:07:59,988 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 [2023-08-31 03:08:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:00,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:08:00,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:08:00,510 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 [2023-08-31 03:08:00,515 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 [2023-08-31 03:08:00,521 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 [2023-08-31 03:08:00,524 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 [2023-08-31 03:08:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:00,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123694904] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:08:00,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:08:00,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 26 [2023-08-31 03:08:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792948460] [2023-08-31 03:08:00,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:08:00,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-31 03:08:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:08:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-31 03:08:00,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=647, Unknown=5, NotChecked=0, Total=756 [2023-08-31 03:08:01,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 267 [2023-08-31 03:08:01,879 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) [2023-08-31 03:08:01,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:08:01,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 267 [2023-08-31 03:08:01,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:08:05,401 INFO L130 PetriNetUnfolder]: 2159/3216 cut-off events. [2023-08-31 03:08:05,402 INFO L131 PetriNetUnfolder]: For 10698/10698 co-relation queries the response was YES. [2023-08-31 03:08:05,409 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. [2023-08-31 03:08:05,421 INFO L137 encePairwiseOnDemand]: 254/267 looper letters, 196 selfloop transitions, 121 changer transitions 2/319 dead transitions. [2023-08-31 03:08:05,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 319 transitions, 2747 flow [2023-08-31 03:08:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-31 03:08:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-31 03:08:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1707 transitions. [2023-08-31 03:08:05,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196629213483146 [2023-08-31 03:08:05,426 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1707 transitions. [2023-08-31 03:08:05,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1707 transitions. [2023-08-31 03:08:05,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:08:05,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1707 transitions. [2023-08-31 03:08:05,429 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) [2023-08-31 03:08:05,433 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) [2023-08-31 03:08:05,434 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) [2023-08-31 03:08:05,434 INFO L175 Difference]: Start difference. First operand has 86 places, 128 transitions, 1055 flow. Second operand 20 states and 1707 transitions. [2023-08-31 03:08:05,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 319 transitions, 2747 flow [2023-08-31 03:08:05,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 319 transitions, 2714 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-31 03:08:05,465 INFO L231 Difference]: Finished difference. Result has 112 places, 192 transitions, 1994 flow [2023-08-31 03:08:05,465 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} [2023-08-31 03:08:05,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2023-08-31 03:08:05,466 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 192 transitions, 1994 flow [2023-08-31 03:08:05,466 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) [2023-08-31 03:08:05,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:08:05,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:08:05,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-31 03:08:05,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:05,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:08:05,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:08:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash -542212045, now seen corresponding path program 4 times [2023-08-31 03:08:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:08:05,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744636527] [2023-08-31 03:08:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:05,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:08:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:06,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:08:06,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744636527] [2023-08-31 03:08:06,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744636527] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:08:06,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650664761] [2023-08-31 03:08:06,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 03:08:06,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:06,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:08:06,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:08:06,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 03:08:06,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 03:08:06,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:08:06,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-31 03:08:06,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:08:06,736 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-31 03:08:06,736 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 [2023-08-31 03:08:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:06,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:08:07,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:08:07,113 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 [2023-08-31 03:08:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:07,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650664761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:08:07,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:08:07,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 23 [2023-08-31 03:08:07,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584300762] [2023-08-31 03:08:07,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:08:07,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-31 03:08:07,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:08:07,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-31 03:08:07,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2023-08-31 03:08:08,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 267 [2023-08-31 03:08:08,630 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) [2023-08-31 03:08:08,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:08:08,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 267 [2023-08-31 03:08:08,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:08:11,878 INFO L130 PetriNetUnfolder]: 3690/5659 cut-off events. [2023-08-31 03:08:11,879 INFO L131 PetriNetUnfolder]: For 33384/33384 co-relation queries the response was YES. [2023-08-31 03:08:11,894 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. [2023-08-31 03:08:11,956 INFO L137 encePairwiseOnDemand]: 252/267 looper letters, 294 selfloop transitions, 282 changer transitions 36/612 dead transitions. [2023-08-31 03:08:11,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 612 transitions, 6418 flow [2023-08-31 03:08:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-31 03:08:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-31 03:08:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4768 transitions. [2023-08-31 03:08:11,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882103891874288 [2023-08-31 03:08:11,980 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4768 transitions. [2023-08-31 03:08:11,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4768 transitions. [2023-08-31 03:08:11,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:08:11,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4768 transitions. [2023-08-31 03:08:11,988 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) [2023-08-31 03:08:11,998 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) [2023-08-31 03:08:11,999 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) [2023-08-31 03:08:12,000 INFO L175 Difference]: Start difference. First operand has 112 places, 192 transitions, 1994 flow. Second operand 46 states and 4768 transitions. [2023-08-31 03:08:12,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 612 transitions, 6418 flow [2023-08-31 03:08:12,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 612 transitions, 6068 flow, removed 153 selfloop flow, removed 7 redundant places. [2023-08-31 03:08:12,096 INFO L231 Difference]: Finished difference. Result has 178 places, 398 transitions, 4869 flow [2023-08-31 03:08:12,097 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} [2023-08-31 03:08:12,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2023-08-31 03:08:12,097 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 398 transitions, 4869 flow [2023-08-31 03:08:12,098 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) [2023-08-31 03:08:12,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:08:12,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:08:12,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 03:08:12,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:12,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:08:12,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:08:12,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1208376447, now seen corresponding path program 5 times [2023-08-31 03:08:12,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:08:12,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036261218] [2023-08-31 03:08:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:12,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:08:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:08:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036261218] [2023-08-31 03:08:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036261218] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:08:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361917599] [2023-08-31 03:08:13,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 03:08:13,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:13,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:08:13,001 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:08:13,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 03:08:13,071 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-31 03:08:13,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:08:13,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-31 03:08:13,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:08:13,267 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:08:13,267 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 [2023-08-31 03:08:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:13,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:08:13,963 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:08:13,963 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 [2023-08-31 03:08:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:14,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361917599] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:08:14,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:08:14,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 21 [2023-08-31 03:08:14,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496444134] [2023-08-31 03:08:14,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:08:14,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-31 03:08:14,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:08:14,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-31 03:08:14,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-08-31 03:08:14,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-08-31 03:08:14,782 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) [2023-08-31 03:08:14,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:08:14,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-08-31 03:08:14,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:08:17,623 INFO L130 PetriNetUnfolder]: 4546/7224 cut-off events. [2023-08-31 03:08:17,623 INFO L131 PetriNetUnfolder]: For 101225/101596 co-relation queries the response was YES. [2023-08-31 03:08:17,654 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. [2023-08-31 03:08:17,683 INFO L137 encePairwiseOnDemand]: 253/267 looper letters, 298 selfloop transitions, 339 changer transitions 14/672 dead transitions. [2023-08-31 03:08:17,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 672 transitions, 9216 flow [2023-08-31 03:08:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-31 03:08:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-31 03:08:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2471 transitions. [2023-08-31 03:08:17,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856117353308365 [2023-08-31 03:08:17,686 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2471 transitions. [2023-08-31 03:08:17,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2471 transitions. [2023-08-31 03:08:17,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:08:17,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2471 transitions. [2023-08-31 03:08:17,690 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) [2023-08-31 03:08:17,694 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) [2023-08-31 03:08:17,695 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) [2023-08-31 03:08:17,695 INFO L175 Difference]: Start difference. First operand has 178 places, 398 transitions, 4869 flow. Second operand 24 states and 2471 transitions. [2023-08-31 03:08:17,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 672 transitions, 9216 flow [2023-08-31 03:08:18,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 672 transitions, 8312 flow, removed 436 selfloop flow, removed 7 redundant places. [2023-08-31 03:08:18,077 INFO L231 Difference]: Finished difference. Result has 199 places, 572 transitions, 7408 flow [2023-08-31 03:08:18,078 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} [2023-08-31 03:08:18,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2023-08-31 03:08:18,079 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 572 transitions, 7408 flow [2023-08-31 03:08:18,079 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) [2023-08-31 03:08:18,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:08:18,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:08:18,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 03:08:18,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:18,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:08:18,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:08:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1180941759, now seen corresponding path program 6 times [2023-08-31 03:08:18,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:08:18,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297875235] [2023-08-31 03:08:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:18,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:08:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:18,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:08:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297875235] [2023-08-31 03:08:18,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297875235] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:08:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087223956] [2023-08-31 03:08:18,745 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 03:08:18,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:18,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:08:18,749 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:08:18,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 03:08:18,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 03:08:18,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:08:18,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-31 03:08:18,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:08:19,141 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-31 03:08:19,142 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 [2023-08-31 03:08:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:19,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:08:19,483 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:08:19,483 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 [2023-08-31 03:08:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:19,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087223956] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:08:19,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:08:19,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 24 [2023-08-31 03:08:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622874026] [2023-08-31 03:08:19,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:08:19,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-31 03:08:19,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:08:19,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-31 03:08:19,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-08-31 03:08:20,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 267 [2023-08-31 03:08:20,952 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) [2023-08-31 03:08:20,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:08:20,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 267 [2023-08-31 03:08:20,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:08:23,565 INFO L130 PetriNetUnfolder]: 5457/8532 cut-off events. [2023-08-31 03:08:23,566 INFO L131 PetriNetUnfolder]: For 139401/139401 co-relation queries the response was YES. [2023-08-31 03:08:23,660 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. [2023-08-31 03:08:23,699 INFO L137 encePairwiseOnDemand]: 254/267 looper letters, 557 selfloop transitions, 185 changer transitions 17/759 dead transitions. [2023-08-31 03:08:23,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 759 transitions, 10998 flow [2023-08-31 03:08:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-31 03:08:23,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-31 03:08:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3120 transitions. [2023-08-31 03:08:23,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3895131086142322 [2023-08-31 03:08:23,703 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3120 transitions. [2023-08-31 03:08:23,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3120 transitions. [2023-08-31 03:08:23,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:08:23,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3120 transitions. [2023-08-31 03:08:23,706 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) [2023-08-31 03:08:23,711 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) [2023-08-31 03:08:23,712 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) [2023-08-31 03:08:23,712 INFO L175 Difference]: Start difference. First operand has 199 places, 572 transitions, 7408 flow. Second operand 30 states and 3120 transitions. [2023-08-31 03:08:23,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 759 transitions, 10998 flow [2023-08-31 03:08:24,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 759 transitions, 10246 flow, removed 338 selfloop flow, removed 6 redundant places. [2023-08-31 03:08:24,264 INFO L231 Difference]: Finished difference. Result has 233 places, 645 transitions, 8388 flow [2023-08-31 03:08:24,265 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} [2023-08-31 03:08:24,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2023-08-31 03:08:24,265 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 645 transitions, 8388 flow [2023-08-31 03:08:24,266 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) [2023-08-31 03:08:24,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:08:24,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:08:24,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 03:08:24,466 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 [2023-08-31 03:08:24,467 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:08:24,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:08:24,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1868694365, now seen corresponding path program 7 times [2023-08-31 03:08:24,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:08:24,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864754986] [2023-08-31 03:08:24,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:24,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:08:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:25,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:08:25,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864754986] [2023-08-31 03:08:25,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864754986] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:08:25,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875292250] [2023-08-31 03:08:25,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 03:08:25,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:25,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:08:25,599 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:08:25,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 03:08:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:25,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-31 03:08:25,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:08:25,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:08:25,956 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 [2023-08-31 03:08:26,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:08:26,024 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 [2023-08-31 03:08:26,151 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:08:26,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:08:26,153 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 [2023-08-31 03:08:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:26,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:08:26,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:08:26,742 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 [2023-08-31 03:08:26,758 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 [2023-08-31 03:08:26,765 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 [2023-08-31 03:08:26,771 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 [2023-08-31 03:08:26,776 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 [2023-08-31 03:08:26,782 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 [2023-08-31 03:08:26,789 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 [2023-08-31 03:08:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:27,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875292250] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:08:27,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:08:27,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 29 [2023-08-31 03:08:27,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416813342] [2023-08-31 03:08:27,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:08:27,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-31 03:08:27,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:08:27,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-31 03:08:27,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=775, Unknown=10, NotChecked=0, Total=930 [2023-08-31 03:08:29,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-08-31 03:08:29,136 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) [2023-08-31 03:08:29,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:08:29,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-08-31 03:08:29,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:08:34,468 INFO L130 PetriNetUnfolder]: 6725/10505 cut-off events. [2023-08-31 03:08:34,468 INFO L131 PetriNetUnfolder]: For 164139/164139 co-relation queries the response was YES. [2023-08-31 03:08:34,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75185 conditions, 10505 events. 6725/10505 cut-off events. For 164139/164139 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 66076 event pairs, 834 based on Foata normal form. 4/10509 useless extension candidates. Maximal degree in co-relation 75091. Up to 6770 conditions per place. [2023-08-31 03:08:34,576 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 547 selfloop transitions, 376 changer transitions 8/931 dead transitions. [2023-08-31 03:08:34,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 931 transitions, 13615 flow [2023-08-31 03:08:34,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-31 03:08:34,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-31 03:08:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1580 transitions. [2023-08-31 03:08:34,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2958801498127341 [2023-08-31 03:08:34,579 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1580 transitions. [2023-08-31 03:08:34,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1580 transitions. [2023-08-31 03:08:34,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:08:34,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1580 transitions. [2023-08-31 03:08:34,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 79.0) internal successors, (1580), 20 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:08:34,586 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) [2023-08-31 03:08:34,586 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) [2023-08-31 03:08:34,586 INFO L175 Difference]: Start difference. First operand has 233 places, 645 transitions, 8388 flow. Second operand 20 states and 1580 transitions. [2023-08-31 03:08:34,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 931 transitions, 13615 flow [2023-08-31 03:08:35,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 931 transitions, 13203 flow, removed 165 selfloop flow, removed 12 redundant places. [2023-08-31 03:08:35,262 INFO L231 Difference]: Finished difference. Result has 250 places, 792 transitions, 11517 flow [2023-08-31 03:08:35,263 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=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11517, PETRI_PLACES=250, PETRI_TRANSITIONS=792} [2023-08-31 03:08:35,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2023-08-31 03:08:35,263 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 792 transitions, 11517 flow [2023-08-31 03:08:35,264 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) [2023-08-31 03:08:35,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:08:35,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:08:35,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 03:08:35,469 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 [2023-08-31 03:08:35,469 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:08:35,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:08:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1505548975, now seen corresponding path program 1 times [2023-08-31 03:08:35,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:08:35,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818110440] [2023-08-31 03:08:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:08:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:35,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:08:35,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818110440] [2023-08-31 03:08:35,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818110440] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:08:35,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579158065] [2023-08-31 03:08:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:35,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:35,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:08:35,561 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:08:35,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 03:08:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:35,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 03:08:35,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:08:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:35,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:08:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:35,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579158065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:08:35,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:08:35,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-31 03:08:35,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890473411] [2023-08-31 03:08:35,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:08:35,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-31 03:08:35,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:08:35,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-31 03:08:35,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-31 03:08:35,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-08-31 03:08:35,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 792 transitions, 11517 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) [2023-08-31 03:08:35,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:08:35,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-08-31 03:08:35,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:08:39,621 INFO L130 PetriNetUnfolder]: 9623/15486 cut-off events. [2023-08-31 03:08:39,621 INFO L131 PetriNetUnfolder]: For 323628/323676 co-relation queries the response was YES. [2023-08-31 03:08:39,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119250 conditions, 15486 events. 9623/15486 cut-off events. For 323628/323676 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 111467 event pairs, 699 based on Foata normal form. 368/15836 useless extension candidates. Maximal degree in co-relation 119146. Up to 3455 conditions per place. [2023-08-31 03:08:39,774 INFO L137 encePairwiseOnDemand]: 258/267 looper letters, 1417 selfloop transitions, 388 changer transitions 30/1850 dead transitions. [2023-08-31 03:08:39,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1850 transitions, 28628 flow [2023-08-31 03:08:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-31 03:08:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-31 03:08:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2369 transitions. [2023-08-31 03:08:39,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436329588014981 [2023-08-31 03:08:39,777 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2369 transitions. [2023-08-31 03:08:39,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2369 transitions. [2023-08-31 03:08:39,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:08:39,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2369 transitions. [2023-08-31 03:08:39,780 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) [2023-08-31 03:08:39,783 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) [2023-08-31 03:08:39,784 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) [2023-08-31 03:08:39,784 INFO L175 Difference]: Start difference. First operand has 250 places, 792 transitions, 11517 flow. Second operand 20 states and 2369 transitions. [2023-08-31 03:08:39,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1850 transitions, 28628 flow [2023-08-31 03:08:41,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 1850 transitions, 27706 flow, removed 371 selfloop flow, removed 8 redundant places. [2023-08-31 03:08:41,585 INFO L231 Difference]: Finished difference. Result has 273 places, 1020 transitions, 16228 flow [2023-08-31 03:08:41,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=10915, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=16228, PETRI_PLACES=273, PETRI_TRANSITIONS=1020} [2023-08-31 03:08:41,586 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2023-08-31 03:08:41,586 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 1020 transitions, 16228 flow [2023-08-31 03:08:41,587 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) [2023-08-31 03:08:41,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:08:41,587 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] [2023-08-31 03:08:41,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 03:08:41,788 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 [2023-08-31 03:08:41,789 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:08:41,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:08:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash -751990924, now seen corresponding path program 8 times [2023-08-31 03:08:41,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:08:41,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886947778] [2023-08-31 03:08:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:41,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:08:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:08:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886947778] [2023-08-31 03:08:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886947778] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:08:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104365902] [2023-08-31 03:08:41,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:08:41,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:41,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:08:41,861 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:08:41,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 03:08:41,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:08:41,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:08:41,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:08:41,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:08:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:42,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:08:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:08:42,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104365902] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:08:42,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:08:42,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-08-31 03:08:42,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16687982] [2023-08-31 03:08:42,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:08:42,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-31 03:08:42,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:08:42,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-31 03:08:42,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-08-31 03:08:42,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 267 [2023-08-31 03:08:42,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 1020 transitions, 16228 flow. Second operand has 15 states, 15 states have (on average 117.53333333333333) internal successors, (1763), 15 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:08:42,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:08:42,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 267 [2023-08-31 03:08:42,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:08:45,209 INFO L130 PetriNetUnfolder]: 7580/12117 cut-off events. [2023-08-31 03:08:45,209 INFO L131 PetriNetUnfolder]: For 328891/330835 co-relation queries the response was YES. [2023-08-31 03:08:45,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102508 conditions, 12117 events. 7580/12117 cut-off events. For 328891/330835 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 84848 event pairs, 2064 based on Foata normal form. 1023/12777 useless extension candidates. Maximal degree in co-relation 102392. Up to 9295 conditions per place. [2023-08-31 03:08:45,361 INFO L137 encePairwiseOnDemand]: 262/267 looper letters, 824 selfloop transitions, 82 changer transitions 2/1021 dead transitions. [2023-08-31 03:08:45,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1021 transitions, 17872 flow [2023-08-31 03:08:45,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 03:08:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 03:08:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 870 transitions. [2023-08-31 03:08:45,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654895666131621 [2023-08-31 03:08:45,363 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 870 transitions. [2023-08-31 03:08:45,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 870 transitions. [2023-08-31 03:08:45,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:08:45,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 870 transitions. [2023-08-31 03:08:45,365 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) [2023-08-31 03:08:45,366 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) [2023-08-31 03:08:45,366 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) [2023-08-31 03:08:45,367 INFO L175 Difference]: Start difference. First operand has 273 places, 1020 transitions, 16228 flow. Second operand 7 states and 870 transitions. [2023-08-31 03:08:45,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1021 transitions, 17872 flow [2023-08-31 03:08:49,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1021 transitions, 16771 flow, removed 543 selfloop flow, removed 6 redundant places. [2023-08-31 03:08:49,309 INFO L231 Difference]: Finished difference. Result has 276 places, 938 transitions, 14282 flow [2023-08-31 03:08:49,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=13813, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14282, PETRI_PLACES=276, PETRI_TRANSITIONS=938} [2023-08-31 03:08:49,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2023-08-31 03:08:49,310 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 938 transitions, 14282 flow [2023-08-31 03:08:49,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 117.53333333333333) internal successors, (1763), 15 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:08:49,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:08:49,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:08:49,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-31 03:08:49,515 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 [2023-08-31 03:08:49,516 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:08:49,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:08:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1935712453, now seen corresponding path program 2 times [2023-08-31 03:08:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:08:49,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870038960] [2023-08-31 03:08:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:49,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:08:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:49,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:08:49,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870038960] [2023-08-31 03:08:49,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870038960] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:08:49,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738984588] [2023-08-31 03:08:49,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:08:49,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:08:49,689 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:08:49,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-31 03:08:49,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:08:49,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:08:49,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 03:08:49,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:08:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:49,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:08:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:49,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738984588] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:08:49,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:08:49,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-08-31 03:08:49,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633928031] [2023-08-31 03:08:49,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:08:49,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-31 03:08:49,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:08:49,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-31 03:08:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-08-31 03:08:50,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-08-31 03:08:50,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 938 transitions, 14282 flow. Second operand has 15 states, 15 states have (on average 112.4) internal successors, (1686), 15 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:08:50,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:08:50,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-08-31 03:08:50,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:08:52,667 INFO L130 PetriNetUnfolder]: 6569/10983 cut-off events. [2023-08-31 03:08:52,668 INFO L131 PetriNetUnfolder]: For 160455/160501 co-relation queries the response was YES. [2023-08-31 03:08:52,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74731 conditions, 10983 events. 6569/10983 cut-off events. For 160455/160501 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 78835 event pairs, 711 based on Foata normal form. 824/11794 useless extension candidates. Maximal degree in co-relation 74615. Up to 6506 conditions per place. [2023-08-31 03:08:52,789 INFO L137 encePairwiseOnDemand]: 260/267 looper letters, 807 selfloop transitions, 95 changer transitions 27/945 dead transitions. [2023-08-31 03:08:52,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 945 transitions, 14943 flow [2023-08-31 03:08:52,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 03:08:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 03:08:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1062 transitions. [2023-08-31 03:08:52,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419475655430712 [2023-08-31 03:08:52,791 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1062 transitions. [2023-08-31 03:08:52,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1062 transitions. [2023-08-31 03:08:52,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:08:52,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1062 transitions. [2023-08-31 03:08:52,792 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) [2023-08-31 03:08:52,794 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) [2023-08-31 03:08:52,794 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) [2023-08-31 03:08:52,794 INFO L175 Difference]: Start difference. First operand has 276 places, 938 transitions, 14282 flow. Second operand 9 states and 1062 transitions. [2023-08-31 03:08:52,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 945 transitions, 14943 flow [2023-08-31 03:08:53,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 945 transitions, 14760 flow, removed 89 selfloop flow, removed 8 redundant places. [2023-08-31 03:08:53,967 INFO L231 Difference]: Finished difference. Result has 270 places, 682 transitions, 10231 flow [2023-08-31 03:08:53,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=10197, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10231, PETRI_PLACES=270, PETRI_TRANSITIONS=682} [2023-08-31 03:08:53,968 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2023-08-31 03:08:53,968 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 682 transitions, 10231 flow [2023-08-31 03:08:53,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 112.4) internal successors, (1686), 15 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:08:53,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:08:53,969 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] [2023-08-31 03:08:53,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-31 03:08:54,174 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 [2023-08-31 03:08:54,174 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:08:54,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:08:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash -318060220, now seen corresponding path program 9 times [2023-08-31 03:08:54,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:08:54,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164583269] [2023-08-31 03:08:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:08:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:54,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:08:54,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164583269] [2023-08-31 03:08:54,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164583269] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:08:54,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829316988] [2023-08-31 03:08:54,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:08:54,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:54,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:08:54,258 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:08:54,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-31 03:08:54,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:08:54,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:08:54,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:08:54,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:08:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:54,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:08:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:54,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829316988] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:08:54,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:08:54,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-31 03:08:54,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199010372] [2023-08-31 03:08:54,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:08:54,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 03:08:54,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:08:54,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 03:08:54,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-31 03:08:54,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 267 [2023-08-31 03:08:54,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 682 transitions, 10231 flow. Second operand has 14 states, 14 states have (on average 117.92857142857143) internal successors, (1651), 14 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:08:54,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:08:54,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 267 [2023-08-31 03:08:54,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:08:56,205 INFO L130 PetriNetUnfolder]: 4184/7170 cut-off events. [2023-08-31 03:08:56,205 INFO L131 PetriNetUnfolder]: For 125450/126560 co-relation queries the response was YES. [2023-08-31 03:08:56,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50927 conditions, 7170 events. 4184/7170 cut-off events. For 125450/126560 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 51300 event pairs, 956 based on Foata normal form. 829/7770 useless extension candidates. Maximal degree in co-relation 50816. Up to 4054 conditions per place. [2023-08-31 03:08:56,275 INFO L137 encePairwiseOnDemand]: 261/267 looper letters, 464 selfloop transitions, 27 changer transitions 32/611 dead transitions. [2023-08-31 03:08:56,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 611 transitions, 10312 flow [2023-08-31 03:08:56,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 03:08:56,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 03:08:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 989 transitions. [2023-08-31 03:08:56,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46301498127340823 [2023-08-31 03:08:56,277 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 989 transitions. [2023-08-31 03:08:56,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 989 transitions. [2023-08-31 03:08:56,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:08:56,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 989 transitions. [2023-08-31 03:08:56,278 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) [2023-08-31 03:08:56,280 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) [2023-08-31 03:08:56,280 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) [2023-08-31 03:08:56,280 INFO L175 Difference]: Start difference. First operand has 270 places, 682 transitions, 10231 flow. Second operand 8 states and 989 transitions. [2023-08-31 03:08:56,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 611 transitions, 10312 flow [2023-08-31 03:08:56,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 611 transitions, 9957 flow, removed 133 selfloop flow, removed 18 redundant places. [2023-08-31 03:08:56,779 INFO L231 Difference]: Finished difference. Result has 244 places, 513 transitions, 7866 flow [2023-08-31 03:08:56,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7998, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7866, PETRI_PLACES=244, PETRI_TRANSITIONS=513} [2023-08-31 03:08:56,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2023-08-31 03:08:56,780 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 513 transitions, 7866 flow [2023-08-31 03:08:56,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.92857142857143) internal successors, (1651), 14 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:08:56,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:08:56,781 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] [2023-08-31 03:08:56,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-31 03:08:56,985 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 [2023-08-31 03:08:56,986 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:08:56,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:08:56,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1080724745, now seen corresponding path program 10 times [2023-08-31 03:08:56,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:08:56,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114566344] [2023-08-31 03:08:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:56,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:08:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:57,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:08:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114566344] [2023-08-31 03:08:57,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114566344] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:08:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842554435] [2023-08-31 03:08:57,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 03:08:57,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:57,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:08:57,090 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:08:57,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-31 03:08:57,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 03:08:57,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:08:57,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 03:08:57,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:08:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:57,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:08:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:57,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842554435] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:08:57,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:08:57,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2023-08-31 03:08:57,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137858919] [2023-08-31 03:08:57,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:08:57,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 03:08:57,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:08:57,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 03:08:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-31 03:08:57,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 267 [2023-08-31 03:08:57,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 513 transitions, 7866 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) [2023-08-31 03:08:57,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:08:57,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 267 [2023-08-31 03:08:57,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:08:58,995 INFO L130 PetriNetUnfolder]: 3145/5435 cut-off events. [2023-08-31 03:08:58,995 INFO L131 PetriNetUnfolder]: For 83428/83804 co-relation queries the response was YES. [2023-08-31 03:08:59,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38617 conditions, 5435 events. 3145/5435 cut-off events. For 83428/83804 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 37095 event pairs, 433 based on Foata normal form. 508/5908 useless extension candidates. Maximal degree in co-relation 38518. Up to 1429 conditions per place. [2023-08-31 03:08:59,045 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 261 selfloop transitions, 120 changer transitions 229/622 dead transitions. [2023-08-31 03:08:59,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 622 transitions, 10184 flow [2023-08-31 03:08:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 03:08:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 03:08:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2240 transitions. [2023-08-31 03:08:59,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155332150601223 [2023-08-31 03:08:59,048 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2240 transitions. [2023-08-31 03:08:59,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2240 transitions. [2023-08-31 03:08:59,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:08:59,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2240 transitions. [2023-08-31 03:08:59,051 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) [2023-08-31 03:08:59,053 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) [2023-08-31 03:08:59,054 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) [2023-08-31 03:08:59,054 INFO L175 Difference]: Start difference. First operand has 244 places, 513 transitions, 7866 flow. Second operand 19 states and 2240 transitions. [2023-08-31 03:08:59,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 622 transitions, 10184 flow [2023-08-31 03:08:59,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 622 transitions, 9810 flow, removed 66 selfloop flow, removed 14 redundant places. [2023-08-31 03:08:59,472 INFO L231 Difference]: Finished difference. Result has 243 places, 333 transitions, 4440 flow [2023-08-31 03:08:59,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7277, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4440, PETRI_PLACES=243, PETRI_TRANSITIONS=333} [2023-08-31 03:08:59,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2023-08-31 03:08:59,473 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 333 transitions, 4440 flow [2023-08-31 03:08:59,474 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) [2023-08-31 03:08:59,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:08:59,474 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] [2023-08-31 03:08:59,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-31 03:08:59,680 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 [2023-08-31 03:08:59,680 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:08:59,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:08:59,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1221860025, now seen corresponding path program 11 times [2023-08-31 03:08:59,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:08:59,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670131645] [2023-08-31 03:08:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:08:59,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:08:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:08:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:08:59,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:08:59,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670131645] [2023-08-31 03:08:59,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670131645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:08:59,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273464750] [2023-08-31 03:08:59,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 03:08:59,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:08:59,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:08:59,797 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:08:59,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-31 03:08:59,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:08:59,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:08:59,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:08:59,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:08:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:08:59,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:09:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:00,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273464750] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:09:00,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:09:00,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-31 03:09:00,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125367617] [2023-08-31 03:09:00,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:09:00,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 03:09:00,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:09:00,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 03:09:00,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-08-31 03:09:00,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-08-31 03:09:00,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 333 transitions, 4440 flow. Second operand has 19 states, 19 states have (on average 107.36842105263158) internal successors, (2040), 19 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:09:00,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:09:00,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-08-31 03:09:00,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:09:02,386 INFO L130 PetriNetUnfolder]: 3075/4688 cut-off events. [2023-08-31 03:09:02,386 INFO L131 PetriNetUnfolder]: For 72053/72053 co-relation queries the response was YES. [2023-08-31 03:09:02,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37275 conditions, 4688 events. 3075/4688 cut-off events. For 72053/72053 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 24248 event pairs, 160 based on Foata normal form. 28/4716 useless extension candidates. Maximal degree in co-relation 37198. Up to 1638 conditions per place. [2023-08-31 03:09:02,429 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 423 selfloop transitions, 383 changer transitions 0/806 dead transitions. [2023-08-31 03:09:02,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 806 transitions, 12145 flow [2023-08-31 03:09:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-31 03:09:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-31 03:09:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 5134 transitions. [2023-08-31 03:09:02,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180100960755577 [2023-08-31 03:09:02,433 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 5134 transitions. [2023-08-31 03:09:02,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 5134 transitions. [2023-08-31 03:09:02,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:09:02,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 5134 transitions. [2023-08-31 03:09:02,438 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) [2023-08-31 03:09:02,444 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) [2023-08-31 03:09:02,444 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) [2023-08-31 03:09:02,444 INFO L175 Difference]: Start difference. First operand has 243 places, 333 transitions, 4440 flow. Second operand 46 states and 5134 transitions. [2023-08-31 03:09:02,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 806 transitions, 12145 flow [2023-08-31 03:09:02,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 806 transitions, 10539 flow, removed 582 selfloop flow, removed 24 redundant places. [2023-08-31 03:09:02,682 INFO L231 Difference]: Finished difference. Result has 224 places, 547 transitions, 8071 flow [2023-08-31 03:09:02,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=3808, PETRI_DIFFERENCE_MINUEND_PLACES=161, 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=8071, PETRI_PLACES=224, PETRI_TRANSITIONS=547} [2023-08-31 03:09:02,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2023-08-31 03:09:02,683 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 547 transitions, 8071 flow [2023-08-31 03:09:02,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.36842105263158) internal successors, (2040), 19 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:09:02,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:09:02,683 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] [2023-08-31 03:09:02,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-31 03:09:02,883 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 [2023-08-31 03:09:02,884 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:09:02,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:09:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash 41038503, now seen corresponding path program 12 times [2023-08-31 03:09:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:09:02,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238992068] [2023-08-31 03:09:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:09:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:09:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:09:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:02,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:09:02,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238992068] [2023-08-31 03:09:02,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238992068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:09:02,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226256467] [2023-08-31 03:09:02,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 03:09:02,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:09:02,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:09:02,983 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:09:02,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-31 03:09:03,077 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 03:09:03,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:09:03,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:09:03,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:09:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:03,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:09:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:03,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226256467] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:09:03,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:09:03,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-08-31 03:09:03,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664834672] [2023-08-31 03:09:03,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:09:03,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 03:09:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:09:03,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 03:09:03,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-08-31 03:09:03,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-08-31 03:09:03,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 547 transitions, 8071 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) [2023-08-31 03:09:03,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:09:03,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-08-31 03:09:03,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:09:04,430 INFO L130 PetriNetUnfolder]: 3027/4624 cut-off events. [2023-08-31 03:09:04,430 INFO L131 PetriNetUnfolder]: For 89222/89247 co-relation queries the response was YES. [2023-08-31 03:09:04,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38868 conditions, 4624 events. 3027/4624 cut-off events. For 89222/89247 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 24205 event pairs, 449 based on Foata normal form. 75/4690 useless extension candidates. Maximal degree in co-relation 38790. Up to 2263 conditions per place. [2023-08-31 03:09:04,482 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 499 selfloop transitions, 155 changer transitions 0/681 dead transitions. [2023-08-31 03:09:04,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 681 transitions, 11373 flow [2023-08-31 03:09:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 03:09:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 03:09:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1049 transitions. [2023-08-31 03:09:04,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43653766125676235 [2023-08-31 03:09:04,483 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1049 transitions. [2023-08-31 03:09:04,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1049 transitions. [2023-08-31 03:09:04,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:09:04,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1049 transitions. [2023-08-31 03:09:04,485 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) [2023-08-31 03:09:04,486 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) [2023-08-31 03:09:04,486 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) [2023-08-31 03:09:04,487 INFO L175 Difference]: Start difference. First operand has 224 places, 547 transitions, 8071 flow. Second operand 9 states and 1049 transitions. [2023-08-31 03:09:04,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 681 transitions, 11373 flow [2023-08-31 03:09:04,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 681 transitions, 10251 flow, removed 552 selfloop flow, removed 7 redundant places. [2023-08-31 03:09:04,887 INFO L231 Difference]: Finished difference. Result has 221 places, 536 transitions, 7763 flow [2023-08-31 03:09:04,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6875, PETRI_DIFFERENCE_MINUEND_PLACES=209, 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=7763, PETRI_PLACES=221, PETRI_TRANSITIONS=536} [2023-08-31 03:09:04,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2023-08-31 03:09:04,888 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 536 transitions, 7763 flow [2023-08-31 03:09:04,889 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) [2023-08-31 03:09:04,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:09:04,889 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] [2023-08-31 03:09:04,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-31 03:09:05,091 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 [2023-08-31 03:09:05,091 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:09:05,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:09:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash 594494739, now seen corresponding path program 13 times [2023-08-31 03:09:05,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:09:05,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863612484] [2023-08-31 03:09:05,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:09:05,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:09:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:09:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:05,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:09:05,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863612484] [2023-08-31 03:09:05,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863612484] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:09:05,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235875094] [2023-08-31 03:09:05,214 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 03:09:05,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:09:05,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:09:05,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:09:05,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-31 03:09:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:09:05,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:09:05,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:09:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:05,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:09:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:05,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235875094] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:09:05,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:09:05,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-08-31 03:09:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97916312] [2023-08-31 03:09:05,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:09:05,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-31 03:09:05,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:09:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-31 03:09:05,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-08-31 03:09:05,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-08-31 03:09:05,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 536 transitions, 7763 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) [2023-08-31 03:09:05,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:09:05,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-08-31 03:09:05,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:09:07,086 INFO L130 PetriNetUnfolder]: 3162/4857 cut-off events. [2023-08-31 03:09:07,087 INFO L131 PetriNetUnfolder]: For 95502/95548 co-relation queries the response was YES. [2023-08-31 03:09:07,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40334 conditions, 4857 events. 3162/4857 cut-off events. For 95502/95548 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 25987 event pairs, 449 based on Foata normal form. 53/4904 useless extension candidates. Maximal degree in co-relation 40256. Up to 2277 conditions per place. [2023-08-31 03:09:07,129 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 487 selfloop transitions, 235 changer transitions 0/749 dead transitions. [2023-08-31 03:09:07,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 749 transitions, 11740 flow [2023-08-31 03:09:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 03:09:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 03:09:07,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1641 transitions. [2023-08-31 03:09:07,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4390048154093098 [2023-08-31 03:09:07,131 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1641 transitions. [2023-08-31 03:09:07,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1641 transitions. [2023-08-31 03:09:07,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:09:07,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1641 transitions. [2023-08-31 03:09:07,133 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) [2023-08-31 03:09:07,135 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) [2023-08-31 03:09:07,135 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) [2023-08-31 03:09:07,135 INFO L175 Difference]: Start difference. First operand has 221 places, 536 transitions, 7763 flow. Second operand 14 states and 1641 transitions. [2023-08-31 03:09:07,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 749 transitions, 11740 flow [2023-08-31 03:09:07,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 749 transitions, 11436 flow, removed 79 selfloop flow, removed 6 redundant places. [2023-08-31 03:09:07,483 INFO L231 Difference]: Finished difference. Result has 233 places, 603 transitions, 9385 flow [2023-08-31 03:09:07,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7528, PETRI_DIFFERENCE_MINUEND_PLACES=215, 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=9385, PETRI_PLACES=233, PETRI_TRANSITIONS=603} [2023-08-31 03:09:07,483 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2023-08-31 03:09:07,484 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 603 transitions, 9385 flow [2023-08-31 03:09:07,484 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) [2023-08-31 03:09:07,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:09:07,484 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] [2023-08-31 03:09:07,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-31 03:09:07,688 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 [2023-08-31 03:09:07,689 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:09:07,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:09:07,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1361094559, now seen corresponding path program 14 times [2023-08-31 03:09:07,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:09:07,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331395503] [2023-08-31 03:09:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:09:07,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:09:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:09:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:07,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:09:07,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331395503] [2023-08-31 03:09:07,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331395503] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:09:07,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090541529] [2023-08-31 03:09:07,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:09:07,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:09:07,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:09:07,804 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:09:07,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-31 03:09:07,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:09:07,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:09:07,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:09:07,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:09:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:07,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:09:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:08,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090541529] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:09:08,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:09:08,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-31 03:09:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236372671] [2023-08-31 03:09:08,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:09:08,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-31 03:09:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:09:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-31 03:09:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-31 03:09:08,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-08-31 03:09:08,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 603 transitions, 9385 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) [2023-08-31 03:09:08,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:09:08,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-08-31 03:09:08,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:09:09,371 INFO L130 PetriNetUnfolder]: 3121/4777 cut-off events. [2023-08-31 03:09:09,371 INFO L131 PetriNetUnfolder]: For 82722/82771 co-relation queries the response was YES. [2023-08-31 03:09:09,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39768 conditions, 4777 events. 3121/4777 cut-off events. For 82722/82771 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 25264 event pairs, 499 based on Foata normal form. 55/4816 useless extension candidates. Maximal degree in co-relation 39687. Up to 2397 conditions per place. [2023-08-31 03:09:09,419 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 484 selfloop transitions, 168 changer transitions 0/679 dead transitions. [2023-08-31 03:09:09,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 679 transitions, 11460 flow [2023-08-31 03:09:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 03:09:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 03:09:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1049 transitions. [2023-08-31 03:09:09,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43653766125676235 [2023-08-31 03:09:09,424 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1049 transitions. [2023-08-31 03:09:09,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1049 transitions. [2023-08-31 03:09:09,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:09:09,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1049 transitions. [2023-08-31 03:09:09,425 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) [2023-08-31 03:09:09,426 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) [2023-08-31 03:09:09,426 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) [2023-08-31 03:09:09,426 INFO L175 Difference]: Start difference. First operand has 233 places, 603 transitions, 9385 flow. Second operand 9 states and 1049 transitions. [2023-08-31 03:09:09,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 679 transitions, 11460 flow [2023-08-31 03:09:09,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 679 transitions, 11048 flow, removed 133 selfloop flow, removed 6 redundant places. [2023-08-31 03:09:09,864 INFO L231 Difference]: Finished difference. Result has 233 places, 598 transitions, 9265 flow [2023-08-31 03:09:09,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=8770, PETRI_DIFFERENCE_MINUEND_PLACES=224, 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=9265, PETRI_PLACES=233, PETRI_TRANSITIONS=598} [2023-08-31 03:09:09,865 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2023-08-31 03:09:09,865 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 598 transitions, 9265 flow [2023-08-31 03:09:09,865 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) [2023-08-31 03:09:09,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:09:09,866 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] [2023-08-31 03:09:09,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-31 03:09:10,070 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 [2023-08-31 03:09:10,070 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:09:10,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:09:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash 649905999, now seen corresponding path program 15 times [2023-08-31 03:09:10,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:09:10,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680949769] [2023-08-31 03:09:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:09:10,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:09:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:09:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:10,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:09:10,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680949769] [2023-08-31 03:09:10,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680949769] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:09:10,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466343244] [2023-08-31 03:09:10,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:09:10,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:09:10,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:09:10,184 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:09:10,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-31 03:09:10,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:09:10,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:09:10,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:09:10,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:09:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:10,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:09:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:10,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466343244] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:09:10,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:09:10,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-08-31 03:09:10,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072817613] [2023-08-31 03:09:10,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:09:10,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-31 03:09:10,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:09:10,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-31 03:09:10,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-08-31 03:09:10,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-08-31 03:09:10,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 598 transitions, 9265 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) [2023-08-31 03:09:10,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:09:10,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-08-31 03:09:10,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:09:11,837 INFO L130 PetriNetUnfolder]: 3094/4719 cut-off events. [2023-08-31 03:09:11,837 INFO L131 PetriNetUnfolder]: For 75386/75432 co-relation queries the response was YES. [2023-08-31 03:09:11,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38945 conditions, 4719 events. 3094/4719 cut-off events. For 75386/75432 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24753 event pairs, 468 based on Foata normal form. 51/4764 useless extension candidates. Maximal degree in co-relation 38865. Up to 2278 conditions per place. [2023-08-31 03:09:11,889 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 435 selfloop transitions, 226 changer transitions 0/688 dead transitions. [2023-08-31 03:09:11,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 688 transitions, 11496 flow [2023-08-31 03:09:11,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 03:09:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 03:09:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1169 transitions. [2023-08-31 03:09:11,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4378277153558052 [2023-08-31 03:09:11,891 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1169 transitions. [2023-08-31 03:09:11,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1169 transitions. [2023-08-31 03:09:11,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:09:11,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1169 transitions. [2023-08-31 03:09:11,893 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) [2023-08-31 03:09:11,894 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) [2023-08-31 03:09:11,894 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) [2023-08-31 03:09:11,895 INFO L175 Difference]: Start difference. First operand has 233 places, 598 transitions, 9265 flow. Second operand 10 states and 1169 transitions. [2023-08-31 03:09:11,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 688 transitions, 11496 flow [2023-08-31 03:09:12,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 688 transitions, 11306 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-31 03:09:12,250 INFO L231 Difference]: Finished difference. Result has 235 places, 597 transitions, 9515 flow [2023-08-31 03:09:12,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=9063, PETRI_DIFFERENCE_MINUEND_PLACES=226, 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=9515, PETRI_PLACES=235, PETRI_TRANSITIONS=597} [2023-08-31 03:09:12,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2023-08-31 03:09:12,251 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 597 transitions, 9515 flow [2023-08-31 03:09:12,251 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) [2023-08-31 03:09:12,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:09:12,251 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] [2023-08-31 03:09:12,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-31 03:09:12,451 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 [2023-08-31 03:09:12,452 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:09:12,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:09:12,452 INFO L85 PathProgramCache]: Analyzing trace with hash 602700803, now seen corresponding path program 16 times [2023-08-31 03:09:12,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:09:12,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893224350] [2023-08-31 03:09:12,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:09:12,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:09:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:09:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:09:12,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:09:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893224350] [2023-08-31 03:09:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893224350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:09:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003452874] [2023-08-31 03:09:12,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 03:09:12,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:09:12,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:09:12,589 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:09:12,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-31 03:09:12,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 03:09:12,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:09:12,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:09:12,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:09:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:12,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:09:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:12,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003452874] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:09:12,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:09:12,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-31 03:09:12,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353100596] [2023-08-31 03:09:12,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:09:12,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-31 03:09:12,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:09:12,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-31 03:09:12,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-08-31 03:09:13,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-08-31 03:09:13,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 597 transitions, 9515 flow. Second operand has 18 states, 18 states have (on average 107.5) internal successors, (1935), 18 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:09:13,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:09:13,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-08-31 03:09:13,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:09:14,420 INFO L130 PetriNetUnfolder]: 3108/4717 cut-off events. [2023-08-31 03:09:14,420 INFO L131 PetriNetUnfolder]: For 80391/80391 co-relation queries the response was YES. [2023-08-31 03:09:14,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39590 conditions, 4717 events. 3108/4717 cut-off events. For 80391/80391 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24313 event pairs, 315 based on Foata normal form. 26/4743 useless extension candidates. Maximal degree in co-relation 39510. Up to 2787 conditions per place. [2023-08-31 03:09:14,465 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 434 selfloop transitions, 271 changer transitions 0/705 dead transitions. [2023-08-31 03:09:14,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 705 transitions, 12188 flow [2023-08-31 03:09:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 03:09:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 03:09:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2116 transitions. [2023-08-31 03:09:14,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41711019120835796 [2023-08-31 03:09:14,467 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2116 transitions. [2023-08-31 03:09:14,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2116 transitions. [2023-08-31 03:09:14,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:09:14,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2116 transitions. [2023-08-31 03:09:14,469 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) [2023-08-31 03:09:14,472 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) [2023-08-31 03:09:14,472 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) [2023-08-31 03:09:14,472 INFO L175 Difference]: Start difference. First operand has 235 places, 597 transitions, 9515 flow. Second operand 19 states and 2116 transitions. [2023-08-31 03:09:14,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 705 transitions, 12188 flow [2023-08-31 03:09:14,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 705 transitions, 11575 flow, removed 27 selfloop flow, removed 10 redundant places. [2023-08-31 03:09:14,845 INFO L231 Difference]: Finished difference. Result has 246 places, 600 transitions, 9582 flow [2023-08-31 03:09:14,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=8897, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9582, PETRI_PLACES=246, PETRI_TRANSITIONS=600} [2023-08-31 03:09:14,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2023-08-31 03:09:14,846 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 600 transitions, 9582 flow [2023-08-31 03:09:14,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 107.5) internal successors, (1935), 18 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:09:14,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:09:14,846 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] [2023-08-31 03:09:14,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-31 03:09:15,051 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 [2023-08-31 03:09:15,051 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:09:15,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:09:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1770876167, now seen corresponding path program 17 times [2023-08-31 03:09:15,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:09:15,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692589510] [2023-08-31 03:09:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:09:15,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:09:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:09:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:09:15,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:09:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692589510] [2023-08-31 03:09:15,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692589510] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:09:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840765550] [2023-08-31 03:09:15,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 03:09:15,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:09:15,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:09:15,157 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) [2023-08-31 03:09:15,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-31 03:09:15,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-31 03:09:15,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:09:15,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:09:15,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:09:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:15,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:09:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:15,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840765550] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:09:15,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:09:15,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-31 03:09:15,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665907585] [2023-08-31 03:09:15,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:09:15,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-31 03:09:15,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:09:15,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-31 03:09:15,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-08-31 03:09:15,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-08-31 03:09:15,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 600 transitions, 9582 flow. Second operand has 20 states, 20 states have (on average 107.6) internal successors, (2152), 20 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:09:15,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:09:15,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-08-31 03:09:15,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:09:17,494 INFO L130 PetriNetUnfolder]: 3081/4688 cut-off events. [2023-08-31 03:09:17,495 INFO L131 PetriNetUnfolder]: For 72526/72526 co-relation queries the response was YES. [2023-08-31 03:09:17,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38288 conditions, 4688 events. 3081/4688 cut-off events. For 72526/72526 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24262 event pairs, 180 based on Foata normal form. 26/4714 useless extension candidates. Maximal degree in co-relation 38205. Up to 1688 conditions per place. [2023-08-31 03:09:17,539 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 403 selfloop transitions, 419 changer transitions 0/822 dead transitions. [2023-08-31 03:09:17,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 822 transitions, 13563 flow [2023-08-31 03:09:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-31 03:09:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-31 03:09:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4150 transitions. [2023-08-31 03:09:17,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42008300435266727 [2023-08-31 03:09:17,543 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4150 transitions. [2023-08-31 03:09:17,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4150 transitions. [2023-08-31 03:09:17,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:09:17,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4150 transitions. [2023-08-31 03:09:17,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 112.16216216216216) internal successors, (4150), 37 states have internal predecessors, (4150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:09:17,551 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) [2023-08-31 03:09:17,552 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) [2023-08-31 03:09:17,552 INFO L175 Difference]: Start difference. First operand has 246 places, 600 transitions, 9582 flow. Second operand 37 states and 4150 transitions. [2023-08-31 03:09:17,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 822 transitions, 13563 flow [2023-08-31 03:09:17,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 822 transitions, 13154 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-08-31 03:09:17,933 INFO L231 Difference]: Finished difference. Result has 269 places, 607 transitions, 10136 flow [2023-08-31 03:09:17,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=9122, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=10136, PETRI_PLACES=269, PETRI_TRANSITIONS=607} [2023-08-31 03:09:17,934 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2023-08-31 03:09:17,934 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 607 transitions, 10136 flow [2023-08-31 03:09:17,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.6) internal successors, (2152), 20 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:09:17,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:09:17,935 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] [2023-08-31 03:09:17,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-31 03:09:18,140 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 [2023-08-31 03:09:18,140 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:09:18,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:09:18,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1185226683, now seen corresponding path program 18 times [2023-08-31 03:09:18,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:09:18,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858202428] [2023-08-31 03:09:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:09:18,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:09:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:09:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:18,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:09:18,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858202428] [2023-08-31 03:09:18,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858202428] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:09:18,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130095452] [2023-08-31 03:09:18,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 03:09:18,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:09:18,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:09:18,241 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) [2023-08-31 03:09:18,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-31 03:09:18,344 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 03:09:18,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:09:18,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 03:09:18,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:09:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:18,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:09:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:09:18,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130095452] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:09:18,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:09:18,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-31 03:09:18,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857861604] [2023-08-31 03:09:18,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:09:18,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-31 03:09:18,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:09:18,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-31 03:09:18,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-31 03:09:18,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 267 [2023-08-31 03:09:18,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 607 transitions, 10136 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) [2023-08-31 03:09:18,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:09:18,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 267 [2023-08-31 03:09:18,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:09:19,662 INFO L130 PetriNetUnfolder]: 2993/4551 cut-off events. [2023-08-31 03:09:19,662 INFO L131 PetriNetUnfolder]: For 76848/76886 co-relation queries the response was YES. [2023-08-31 03:09:19,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38141 conditions, 4551 events. 2993/4551 cut-off events. For 76848/76886 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 23591 event pairs, 402 based on Foata normal form. 50/4591 useless extension candidates. Maximal degree in co-relation 38058. Up to 1849 conditions per place. [2023-08-31 03:09:19,708 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 349 selfloop transitions, 285 changer transitions 0/662 dead transitions. [2023-08-31 03:09:19,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 662 transitions, 11916 flow [2023-08-31 03:09:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 03:09:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 03:09:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1048 transitions. [2023-08-31 03:09:19,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43612151477320016 [2023-08-31 03:09:19,709 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1048 transitions. [2023-08-31 03:09:19,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1048 transitions. [2023-08-31 03:09:19,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:09:19,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1048 transitions. [2023-08-31 03:09:19,710 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) [2023-08-31 03:09:19,711 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) [2023-08-31 03:09:19,712 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) [2023-08-31 03:09:19,712 INFO L175 Difference]: Start difference. First operand has 269 places, 607 transitions, 10136 flow. Second operand 9 states and 1048 transitions. [2023-08-31 03:09:19,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 662 transitions, 11916 flow [2023-08-31 03:09:20,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 662 transitions, 11091 flow, removed 0 selfloop flow, removed 32 redundant places. [2023-08-31 03:09:20,042 INFO L231 Difference]: Finished difference. Result has 242 places, 599 transitions, 9782 flow [2023-08-31 03:09:20,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=9212, PETRI_DIFFERENCE_MINUEND_PLACES=234, 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=9782, PETRI_PLACES=242, PETRI_TRANSITIONS=599} [2023-08-31 03:09:20,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2023-08-31 03:09:20,043 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 599 transitions, 9782 flow [2023-08-31 03:09:20,044 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) [2023-08-31 03:09:20,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:09:20,044 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] [2023-08-31 03:09:20,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-31 03:09:20,249 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 [2023-08-31 03:09:20,249 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:09:20,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:09:20,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1931257353, now seen corresponding path program 3 times [2023-08-31 03:09:20,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:09:20,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197641778] [2023-08-31 03:09:20,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:09:20,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:09:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:09:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:09:22,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:09:22,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197641778] [2023-08-31 03:09:22,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197641778] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:09:22,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103239947] [2023-08-31 03:09:22,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:09:22,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:09:22,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:09:22,227 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) [2023-08-31 03:09:22,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-31 03:09:22,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:09:22,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:09:22,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-31 03:09:22,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:09:22,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 03:09:22,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 03:09:22,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:09:22,923 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 [2023-08-31 03:09:23,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:09:23,137 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 [2023-08-31 03:09:24,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:09:24,070 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 [2023-08-31 03:09:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:09:24,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:09:27,655 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 [2023-08-31 03:10:01,462 WARN L222 SmtUtils]: Spent 10.39s 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) [2023-08-31 03:10:03,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:03,070 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 [2023-08-31 03:10:03,090 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:03,090 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 [2023-08-31 03:10:03,151 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:03,151 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 [2023-08-31 03:10:03,184 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:03,184 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 [2023-08-31 03:10:03,207 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:03,207 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 [2023-08-31 03:10:05,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:05,045 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 [2023-08-31 03:10:05,082 INFO L321 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2023-08-31 03:10:05,083 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 [2023-08-31 03:10:05,171 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:05,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:05,183 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 [2023-08-31 03:10:05,215 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:05,216 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 [2023-08-31 03:10:05,249 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:05,250 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 [2023-08-31 03:10:05,708 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:05,708 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 [2023-08-31 03:10:05,731 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:05,732 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 2414 treesize of output 2136 [2023-08-31 03:10:05,791 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:10:05,791 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 [2023-08-31 03:10:05,822 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:05,822 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 [2023-08-31 03:10:05,847 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 03:10:05,847 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 [2023-08-31 03:10:06,086 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:06,087 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 [2023-08-31 03:10:06,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,096 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 148 treesize of output 88 [2023-08-31 03:10:06,100 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:06,101 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:06,111 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:06,111 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 [2023-08-31 03:10:06,124 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:06,124 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 [2023-08-31 03:10:06,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,160 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 [2023-08-31 03:10:06,165 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:06,165 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:06,178 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,178 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 [2023-08-31 03:10:06,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,195 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 [2023-08-31 03:10:06,514 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,514 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 [2023-08-31 03:10:06,518 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:06,518 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:06,531 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,532 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 [2023-08-31 03:10:06,549 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,549 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 [2023-08-31 03:10:06,666 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:06,667 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 [2023-08-31 03:10:06,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,680 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 [2023-08-31 03:10:06,685 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:06,685 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:06,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,699 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 [2023-08-31 03:10:06,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,724 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 [2023-08-31 03:10:06,947 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:06,947 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 [2023-08-31 03:10:06,953 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:06,954 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:06,966 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:06,966 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 [2023-08-31 03:10:07,003 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,004 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 [2023-08-31 03:10:07,050 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:07,050 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 [2023-08-31 03:10:07,059 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,059 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,080 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-08-31 03:10:07,081 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 [2023-08-31 03:10:07,108 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,108 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 [2023-08-31 03:10:07,155 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:07,155 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 [2023-08-31 03:10:07,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:07,175 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 [2023-08-31 03:10:07,183 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,184 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,198 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,199 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 [2023-08-31 03:10:07,241 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,241 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 [2023-08-31 03:10:07,279 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:07,279 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 [2023-08-31 03:10:07,298 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:07,298 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 [2023-08-31 03:10:07,318 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:07,319 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 [2023-08-31 03:10:07,332 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:07,333 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 137 treesize of output 89 [2023-08-31 03:10:07,339 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,339 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,352 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,353 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 [2023-08-31 03:10:07,374 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 42 [2023-08-31 03:10:07,422 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:07,422 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 [2023-08-31 03:10:07,430 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,430 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,444 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,445 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 [2023-08-31 03:10:07,489 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,490 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 [2023-08-31 03:10:07,535 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:07,535 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 [2023-08-31 03:10:07,553 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:07,554 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 [2023-08-31 03:10:07,568 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:07,568 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 [2023-08-31 03:10:07,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:07,589 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 [2023-08-31 03:10:07,596 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,611 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,612 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 [2023-08-31 03:10:07,643 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,643 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 [2023-08-31 03:10:07,679 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:07,679 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 [2023-08-31 03:10:07,686 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,686 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,701 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,701 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 [2023-08-31 03:10:07,722 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,722 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 [2023-08-31 03:10:07,770 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:07,771 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 [2023-08-31 03:10:07,779 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,780 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,798 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,799 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 [2023-08-31 03:10:07,820 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,820 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 [2023-08-31 03:10:07,880 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:07,880 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 1 [2023-08-31 03:10:07,913 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:10:07,913 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 [2023-08-31 03:10:07,921 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,921 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 03:10:07,937 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,938 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 [2023-08-31 03:10:07,964 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-31 03:10:07,964 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 [2023-08-31 03:10:08,012 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,012 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 [2023-08-31 03:10:08,034 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,034 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 [2023-08-31 03:10:08,053 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,054 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 [2023-08-31 03:10:08,084 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,084 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 [2023-08-31 03:10:08,107 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,108 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 [2023-08-31 03:10:08,128 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,129 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 [2023-08-31 03:10:08,161 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,162 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 [2023-08-31 03:10:08,182 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,182 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 [2023-08-31 03:10:08,208 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,209 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 [2023-08-31 03:10:08,230 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,231 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 [2023-08-31 03:10:08,259 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,260 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 [2023-08-31 03:10:08,287 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,287 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 [2023-08-31 03:10:08,309 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,309 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 [2023-08-31 03:10:08,339 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,339 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 [2023-08-31 03:10:08,368 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,368 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 [2023-08-31 03:10:08,390 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,391 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 176 treesize of output 1 [2023-08-31 03:10:08,421 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,421 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 [2023-08-31 03:10:08,451 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,451 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 [2023-08-31 03:10:08,477 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,477 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 [2023-08-31 03:10:08,495 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,495 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 [2023-08-31 03:10:08,514 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,518 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 [2023-08-31 03:10:08,543 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,543 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 [2023-08-31 03:10:08,579 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,579 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 [2023-08-31 03:10:08,605 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,606 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 [2023-08-31 03:10:08,624 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,624 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 [2023-08-31 03:10:08,649 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,650 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 [2023-08-31 03:10:08,673 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,674 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 [2023-08-31 03:10:08,700 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,701 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 186 treesize of output 1 [2023-08-31 03:10:08,720 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,721 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 [2023-08-31 03:10:08,740 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-31 03:10:08,741 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 [2023-08-31 03:10:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:10:09,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103239947] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:10:09,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:10:09,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2023-08-31 03:10:09,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002353828] [2023-08-31 03:10:09,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:10:09,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-31 03:10:09,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:10:09,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-31 03:10:09,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1394, Unknown=18, NotChecked=76, Total=1640 [2023-08-31 03:10:09,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-08-31 03:10:09,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 599 transitions, 9782 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) [2023-08-31 03:10:09,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:10:09,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-08-31 03:10:09,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:10:27,266 WARN L222 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 268 DAG size of output: 124 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:10:48,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:10:53,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:10:56,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:10:58,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:00,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:02,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:04,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:07,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:09,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:11,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:14,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:16,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:20,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:29,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:31,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:33,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:35,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:38,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:41,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:42,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:11:44,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:15:13,880 WARN L222 SmtUtils]: Spent 3.41m on a formula simplification. DAG size of input: 326 DAG size of output: 183 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:15:16,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:15:19,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:16:27,466 WARN L222 SmtUtils]: Spent 58.60s on a formula simplification. DAG size of input: 279 DAG size of output: 160 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:16:29,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:16:35,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:16:41,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:16:43,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:16:48,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:16:50,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:16:58,183 WARN L222 SmtUtils]: Spent 6.84s 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) [2023-08-31 03:17:00,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:17:02,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:17:04,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:17:06,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:17:08,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:17:29,234 WARN L222 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 297 DAG size of output: 125 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:17:48,372 WARN L222 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 301 DAG size of output: 132 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:17:50,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:17:52,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:17:55,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:17:58,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:18:00,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:20:03,556 WARN L222 SmtUtils]: Spent 1.77m on a formula simplification. DAG size of input: 326 DAG size of output: 222 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:20:06,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:20:08,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:20:10,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:20:12,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:20:14,951 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] Killed by 15