./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 14:00:40,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 14:00:40,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 14:00:40,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 14:00:40,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 14:00:40,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 14:00:40,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 14:00:40,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 14:00:40,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 14:00:40,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 14:00:40,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 14:00:40,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 14:00:40,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 14:00:40,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 14:00:40,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 14:00:40,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 14:00:40,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 14:00:40,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 14:00:40,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 14:00:40,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 14:00:40,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 14:00:40,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 14:00:40,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 14:00:40,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 14:00:40,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 14:00:40,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 14:00:40,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 14:00:40,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 14:00:40,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 14:00:40,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 14:00:40,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 14:00:40,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 14:00:40,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 14:00:40,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 14:00:40,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 14:00:40,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 14:00:40,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 14:00:40,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 14:00:40,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 14:00:40,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 14:00:40,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 14:00:40,767 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 14:00:40,784 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 14:00:40,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 14:00:40,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 14:00:40,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 14:00:40,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 14:00:40,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 14:00:40,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 14:00:40,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 14:00:40,788 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 14:00:40,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 14:00:40,789 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 14:00:40,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 14:00:40,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 14:00:40,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 14:00:40,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 14:00:40,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 14:00:40,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 14:00:40,790 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 14:00:40,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 14:00:40,790 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 14:00:40,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 14:00:40,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 14:00:40,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 14:00:40,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 14:00:40,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:00:40,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 14:00:40,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 14:00:40,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 14:00:40,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 14:00:40,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 14:00:40,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 14:00:40,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 14:00:40,793 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 14:00:40,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 14:00:40,793 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 14:00:40,793 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 14:00:41,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 14:00:41,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 14:00:41,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 14:00:41,056 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 14:00:41,056 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 14:00:41,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-09-01 14:00:42,027 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 14:00:42,189 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 14:00:42,189 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-09-01 14:00:42,193 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e66c8fc/2be26b63abc143388240f3c8a36f4f36/FLAG85c870ec2 [2023-09-01 14:00:42,204 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e66c8fc/2be26b63abc143388240f3c8a36f4f36 [2023-09-01 14:00:42,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 14:00:42,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 14:00:42,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 14:00:42,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 14:00:42,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 14:00:42,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8bfad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42, skipping insertion in model container [2023-09-01 14:00:42,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 14:00:42,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 14:00:42,321 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c[2533,2546] [2023-09-01 14:00:42,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:00:42,341 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 14:00:42,372 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c[2533,2546] [2023-09-01 14:00:42,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:00:42,391 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 14:00:42,392 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 14:00:42,396 INFO L208 MainTranslator]: Completed translation [2023-09-01 14:00:42,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42 WrapperNode [2023-09-01 14:00:42,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 14:00:42,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 14:00:42,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 14:00:42,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 14:00:42,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,454 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 228 [2023-09-01 14:00:42,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 14:00:42,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 14:00:42,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 14:00:42,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 14:00:42,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,492 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 14:00:42,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 14:00:42,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 14:00:42,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 14:00:42,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (1/1) ... [2023-09-01 14:00:42,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:00:42,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:42,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 14:00:42,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 14:00:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 14:00:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 14:00:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 14:00:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 14:00:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 14:00:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 14:00:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 14:00:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 14:00:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 14:00:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 14:00:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 14:00:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 14:00:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 14:00:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 14:00:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 14:00:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 14:00:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 14:00:42,561 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 14:00:42,681 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 14:00:42,697 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 14:00:42,968 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 14:00:43,085 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 14:00:43,085 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 14:00:43,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:00:43 BoogieIcfgContainer [2023-09-01 14:00:43,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 14:00:43,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 14:00:43,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 14:00:43,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 14:00:43,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:00:42" (1/3) ... [2023-09-01 14:00:43,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cb61fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:00:43, skipping insertion in model container [2023-09-01 14:00:43,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:00:42" (2/3) ... [2023-09-01 14:00:43,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cb61fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:00:43, skipping insertion in model container [2023-09-01 14:00:43,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:00:43" (3/3) ... [2023-09-01 14:00:43,092 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-09-01 14:00:43,098 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 14:00:43,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 14:00:43,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 14:00:43,105 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 14:00:43,171 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 14:00:43,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 206 transitions, 436 flow [2023-09-01 14:00:43,245 INFO L130 PetriNetUnfolder]: 18/203 cut-off events. [2023-09-01 14:00:43,246 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:00:43,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 18/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 295 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-09-01 14:00:43,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 206 transitions, 436 flow [2023-09-01 14:00:43,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 193 transitions, 404 flow [2023-09-01 14:00:43,258 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 14:00:43,265 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 193 transitions, 404 flow [2023-09-01 14:00:43,267 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 193 transitions, 404 flow [2023-09-01 14:00:43,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 193 transitions, 404 flow [2023-09-01 14:00:43,318 INFO L130 PetriNetUnfolder]: 18/193 cut-off events. [2023-09-01 14:00:43,318 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:00:43,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 193 events. 18/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-09-01 14:00:43,322 INFO L119 LiptonReduction]: Number of co-enabled transitions 7140 [2023-09-01 14:00:47,779 INFO L134 LiptonReduction]: Checked pairs total: 7215 [2023-09-01 14:00:47,780 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-09-01 14:00:47,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 14:00:47,836 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;@2868cf70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 14:00:47,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 14:00:47,849 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-09-01 14:00:47,849 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:00:47,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:47,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:47,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:00:47,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1770190697, now seen corresponding path program 1 times [2023-09-01 14:00:47,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:47,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296802551] [2023-09-01 14:00:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:48,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:48,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296802551] [2023-09-01 14:00:48,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296802551] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:00:48,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:00:48,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 14:00:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106926546] [2023-09-01 14:00:48,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:00:48,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:00:48,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:00:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:00:48,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 415 [2023-09-01 14:00:48,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:48,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:48,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 415 [2023-09-01 14:00:48,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:48,560 INFO L130 PetriNetUnfolder]: 420/591 cut-off events. [2023-09-01 14:00:48,561 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-09-01 14:00:48,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 591 events. 420/591 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1989 event pairs, 213 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 992. Up to 575 conditions per place. [2023-09-01 14:00:48,564 INFO L137 encePairwiseOnDemand]: 412/415 looper letters, 22 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-09-01 14:00:48,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 120 flow [2023-09-01 14:00:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:00:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:00:48,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-09-01 14:00:48,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45140562248995986 [2023-09-01 14:00:48,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-09-01 14:00:48,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-09-01 14:00:48,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:48,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-09-01 14:00:48,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:48,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:48,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:48,600 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 70 flow. Second operand 3 states and 562 transitions. [2023-09-01 14:00:48,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 120 flow [2023-09-01 14:00:48,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 14:00:48,604 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 70 flow [2023-09-01 14:00:48,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-09-01 14:00:48,608 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-09-01 14:00:48,608 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 70 flow [2023-09-01 14:00:48,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:48,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:48,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:48,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 14:00:48,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:00:48,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:48,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2132029984, now seen corresponding path program 1 times [2023-09-01 14:00:48,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:48,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118784706] [2023-09-01 14:00:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:48,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:48,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:48,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118784706] [2023-09-01 14:00:48,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118784706] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:48,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077228219] [2023-09-01 14:00:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:48,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:48,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:48,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:00:48,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 14:00:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:48,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 14:00:48,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:48,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:48,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077228219] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:48,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:00:48,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-09-01 14:00:48,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826394073] [2023-09-01 14:00:48,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:00:48,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 14:00:48,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:48,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 14:00:48,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 14:00:48,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 415 [2023-09-01 14:00:48,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:48,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:48,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 415 [2023-09-01 14:00:48,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:49,087 INFO L130 PetriNetUnfolder]: 499/704 cut-off events. [2023-09-01 14:00:49,087 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 14:00:49,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 704 events. 499/704 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2415 event pairs, 124 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 1421. Up to 410 conditions per place. [2023-09-01 14:00:49,090 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 31 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-09-01 14:00:49,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 166 flow [2023-09-01 14:00:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 14:00:49,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 14:00:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 907 transitions. [2023-09-01 14:00:49,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43710843373493974 [2023-09-01 14:00:49,093 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 907 transitions. [2023-09-01 14:00:49,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 907 transitions. [2023-09-01 14:00:49,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:49,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 907 transitions. [2023-09-01 14:00:49,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:49,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:49,099 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:49,099 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 70 flow. Second operand 5 states and 907 transitions. [2023-09-01 14:00:49,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 166 flow [2023-09-01 14:00:49,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 162 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 14:00:49,101 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 89 flow [2023-09-01 14:00:49,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-09-01 14:00:49,101 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-09-01 14:00:49,102 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 89 flow [2023-09-01 14:00:49,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:49,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:49,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:49,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 14:00:49,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:49,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:00:49,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:49,322 INFO L85 PathProgramCache]: Analyzing trace with hash -96618323, now seen corresponding path program 1 times [2023-09-01 14:00:49,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:49,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580428154] [2023-09-01 14:00:49,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:49,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:49,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580428154] [2023-09-01 14:00:49,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580428154] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298300175] [2023-09-01 14:00:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:49,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:49,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:49,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:00:49,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 14:00:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:49,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 14:00:49,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:49,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:49,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:49,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298300175] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:49,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:00:49,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-09-01 14:00:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773502348] [2023-09-01 14:00:49,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:00:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 14:00:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:00:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 14:00:49,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:00:49,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 415 [2023-09-01 14:00:49,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 171.14285714285714) internal successors, (1198), 7 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:49,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:00:49,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 415 [2023-09-01 14:00:49,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:00:49,991 INFO L130 PetriNetUnfolder]: 698/1018 cut-off events. [2023-09-01 14:00:49,991 INFO L131 PetriNetUnfolder]: For 503/625 co-relation queries the response was YES. [2023-09-01 14:00:49,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 1018 events. 698/1018 cut-off events. For 503/625 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3841 event pairs, 183 based on Foata normal form. 122/979 useless extension candidates. Maximal degree in co-relation 2430. Up to 430 conditions per place. [2023-09-01 14:00:49,994 INFO L137 encePairwiseOnDemand]: 406/415 looper letters, 58 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2023-09-01 14:00:49,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 72 transitions, 363 flow [2023-09-01 14:00:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 14:00:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 14:00:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1413 transitions. [2023-09-01 14:00:49,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256024096385542 [2023-09-01 14:00:49,997 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1413 transitions. [2023-09-01 14:00:49,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1413 transitions. [2023-09-01 14:00:49,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:00:49,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1413 transitions. [2023-09-01 14:00:50,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 176.625) internal successors, (1413), 8 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:50,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 415.0) internal successors, (3735), 9 states have internal predecessors, (3735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:50,005 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 415.0) internal successors, (3735), 9 states have internal predecessors, (3735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:50,005 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 89 flow. Second operand 8 states and 1413 transitions. [2023-09-01 14:00:50,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 72 transitions, 363 flow [2023-09-01 14:00:50,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 72 transitions, 351 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 14:00:50,007 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 151 flow [2023-09-01 14:00:50,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-09-01 14:00:50,008 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-09-01 14:00:50,008 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 151 flow [2023-09-01 14:00:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.14285714285714) internal successors, (1198), 7 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:00:50,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:00:50,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:00:50,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 14:00:50,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 14:00:50,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:00:50,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:00:50,219 INFO L85 PathProgramCache]: Analyzing trace with hash -764145909, now seen corresponding path program 1 times [2023-09-01 14:00:50,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:00:50,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091868921] [2023-09-01 14:00:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:00:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:51,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:00:51,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091868921] [2023-09-01 14:00:51,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091868921] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:00:51,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314939488] [2023-09-01 14:00:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:00:51,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:00:51,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:00:51,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:00:51,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 14:00:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:00:51,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 72 conjunts are in the unsatisfiable core [2023-09-01 14:00:51,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:00:51,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 14:00:51,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 14:00:52,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:00:52,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 14:00:52,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:00:52,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2023-09-01 14:00:52,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:00:52,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 56 [2023-09-01 14:00:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:00:52,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:00:53,720 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~sum~0 c_~mts2~0))) (and (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse0 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4)))))) (or (= c_~mts1~0 .cse0) (<= c_~N~0 ~M~0) (< .cse0 0) (< (+ ~M~0 1) c_~N~0)))) (< c_~mts3~0 .cse1)) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (= c_~mts1~0 (+ c_~sum~0 .cse2 c_~mts2~0)) (<= c_~N~0 ~M~0) (< (+ c_~mts3~0 .cse2) 0) (< (+ ~M~0 1) c_~N~0)))) (<= .cse1 c_~mts3~0)) (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse3 (+ c_~sum~0 .cse4 c_~mts2~0))) (or (= c_~mts1~0 .cse3) (<= 0 (+ c_~mts3~0 .cse4)) (<= c_~N~0 ~M~0) (<= .cse3 0) (< (+ ~M~0 1) c_~N~0))))) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= 0 (+ c_~mts3~0 .cse5)) (< 0 (+ c_~sum~0 .cse5 c_~mts2~0)) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))) (= c_~mts1~0 0)))) is different from false [2023-09-01 14:00:58,685 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse9 (+ c_~sum~0 c_~mts2~0))) (let ((.cse2 (<= .cse9 c_~mts3~0)) (.cse0 (+ |c_thread1Thread1of1ForFork1_plus_~b#1| |c_thread1Thread1of1ForFork1_plus_~a#1|))) (and (or (< (+ |c_thread1Thread1of1ForFork1_plus_~b#1| |c_thread1Thread1of1ForFork1_plus_~a#1| 2147483648) 0) (<= 0 .cse0) (and (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int)) (v_ArrVal_156 (Array Int Int))) (let ((.cse1 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_156) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= (+ c_~sum~0 .cse1 c_~mts2~0) 0) (<= 0 (+ c_~mts3~0 .cse1)) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int)) (v_ArrVal_156 (Array Int Int))) (or (< (+ c_~mts3~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_156) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4)))) 0) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))) .cse2) (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int)) (v_ArrVal_156 (Array Int Int))) (let ((.cse3 (+ c_~mts3~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_156) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4)))))) (or (< .cse3 0) (<= c_~N~0 ~M~0) (= .cse3 0) (< (+ ~M~0 1) c_~N~0)))))) (or (< 2147483647 .cse0) (let ((.cse5 (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset))) (and (forall ((v_ArrVal_156 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_156))) (or (= (+ c_~mts1~0 (select (select .cse4 c_~A~0.base) .cse5)) 0) (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse6 (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (< 0 (+ c_~sum~0 .cse6 c_~mts2~0)) (<= 0 (+ c_~mts3~0 .cse6)) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))))))) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int)) (v_ArrVal_156 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_156))) (let ((.cse7 (+ c_~mts3~0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4)))))) (or (= .cse7 (+ c_~mts1~0 (select (select .cse8 c_~A~0.base) .cse5))) (< .cse7 0) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))))) (< c_~mts3~0 .cse9)) (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int)) (v_ArrVal_156 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_156))) (let ((.cse12 (select (select (store .cse11 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse10 (+ c_~sum~0 .cse12 c_~mts2~0))) (or (<= .cse10 0) (= .cse10 (+ c_~mts1~0 (select (select .cse11 c_~A~0.base) .cse5))) (<= 0 (+ c_~mts3~0 .cse12)) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))))) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int)) (v_ArrVal_156 (Array Int Int))) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_156))) (let ((.cse13 (select (select (store .cse14 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (= (+ c_~sum~0 .cse13 c_~mts2~0) (+ c_~mts1~0 (select (select .cse14 c_~A~0.base) .cse5))) (< (+ c_~mts3~0 .cse13) 0) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))))) .cse2))) (< .cse0 0))))) is different from false [2023-09-01 14:01:00,252 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:00,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 97 [2023-09-01 14:01:00,267 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:00,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2942 treesize of output 2806 [2023-09-01 14:01:00,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:00,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 190 [2023-09-01 14:01:00,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:00,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 147 [2023-09-01 14:01:00,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 113 [2023-09-01 14:01:00,809 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:00,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 82 [2023-09-01 14:01:00,814 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:00,814 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:00,821 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:00,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 99 [2023-09-01 14:01:00,839 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:00,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2023-09-01 14:01:00,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:00,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 60 [2023-09-01 14:01:00,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:00,861 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:00,866 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:00,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 74 [2023-09-01 14:01:00,876 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:00,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2023-09-01 14:01:00,899 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:00,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 83 [2023-09-01 14:01:00,904 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:00,904 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:00,910 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:00,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 101 [2023-09-01 14:01:00,931 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:00,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 43 [2023-09-01 14:01:00,953 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:00,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2023-09-01 14:01:00,961 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:00,961 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:00,968 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:00,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 149 [2023-09-01 14:01:00,981 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:00,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 44 [2023-09-01 14:01:01,016 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:01,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 93 [2023-09-01 14:01:01,022 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:01,022 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:01,029 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:01,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 145 [2023-09-01 14:01:01,041 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:01,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 43 [2023-09-01 14:01:01,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:01,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 117 [2023-09-01 14:01:01,076 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:01,076 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:01:01,084 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:01,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 176 [2023-09-01 14:01:01,120 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:01,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 54 [2023-09-01 14:01:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:01,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314939488] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:01:01,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:01:01,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 32 [2023-09-01 14:01:01,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563273209] [2023-09-01 14:01:01,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:01:01,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 14:01:01,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:01:01,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 14:01:01,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=807, Unknown=2, NotChecked=122, Total=1122 [2023-09-01 14:01:01,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 415 [2023-09-01 14:01:01,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 151 flow. Second operand has 34 states, 34 states have (on average 120.02941176470588) internal successors, (4081), 34 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:01,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:01:01,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 415 [2023-09-01 14:01:01,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:01:03,103 INFO L130 PetriNetUnfolder]: 1406/2083 cut-off events. [2023-09-01 14:01:03,103 INFO L131 PetriNetUnfolder]: For 1980/2058 co-relation queries the response was YES. [2023-09-01 14:01:03,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6446 conditions, 2083 events. 1406/2083 cut-off events. For 1980/2058 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9413 event pairs, 171 based on Foata normal form. 79/2066 useless extension candidates. Maximal degree in co-relation 5714. Up to 1166 conditions per place. [2023-09-01 14:01:03,112 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 112 selfloop transitions, 40 changer transitions 3/157 dead transitions. [2023-09-01 14:01:03,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 157 transitions, 943 flow [2023-09-01 14:01:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 14:01:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 14:01:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1666 transitions. [2023-09-01 14:01:03,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3088044485634847 [2023-09-01 14:01:03,116 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1666 transitions. [2023-09-01 14:01:03,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1666 transitions. [2023-09-01 14:01:03,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:01:03,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1666 transitions. [2023-09-01 14:01:03,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 128.15384615384616) internal successors, (1666), 13 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:03,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 415.0) internal successors, (5810), 14 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:03,126 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 415.0) internal successors, (5810), 14 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:03,126 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 151 flow. Second operand 13 states and 1666 transitions. [2023-09-01 14:01:03,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 157 transitions, 943 flow [2023-09-01 14:01:03,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 157 transitions, 916 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-09-01 14:01:03,134 INFO L231 Difference]: Finished difference. Result has 57 places, 71 transitions, 446 flow [2023-09-01 14:01:03,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=446, PETRI_PLACES=57, PETRI_TRANSITIONS=71} [2023-09-01 14:01:03,135 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2023-09-01 14:01:03,135 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 71 transitions, 446 flow [2023-09-01 14:01:03,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 120.02941176470588) internal successors, (4081), 34 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:03,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:01:03,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:01:03,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 14:01:03,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:01:03,342 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:01:03,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:01:03,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1577393381, now seen corresponding path program 2 times [2023-09-01 14:01:03,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:01:03,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446312278] [2023-09-01 14:01:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:01:03,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:01:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:01:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:04,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:01:04,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446312278] [2023-09-01 14:01:04,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446312278] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:01:04,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872457713] [2023-09-01 14:01:04,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:01:04,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:01:04,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:01:04,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:01:04,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 14:01:04,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:01:04,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:01:04,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 48 conjunts are in the unsatisfiable core [2023-09-01 14:01:04,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:01:04,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:04,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 111 [2023-09-01 14:01:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:05,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:01:05,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:05,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 65 [2023-09-01 14:01:05,745 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:05,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 52 [2023-09-01 14:01:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:06,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872457713] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:01:06,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:01:06,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 32 [2023-09-01 14:01:06,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862323676] [2023-09-01 14:01:06,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:01:06,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 14:01:06,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:01:06,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 14:01:06,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2023-09-01 14:01:08,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 415 [2023-09-01 14:01:08,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 71 transitions, 446 flow. Second operand has 34 states, 34 states have (on average 150.11764705882354) internal successors, (5104), 34 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:08,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:01:08,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 415 [2023-09-01 14:01:08,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:01:10,208 INFO L130 PetriNetUnfolder]: 1672/2503 cut-off events. [2023-09-01 14:01:10,209 INFO L131 PetriNetUnfolder]: For 4153/4153 co-relation queries the response was YES. [2023-09-01 14:01:10,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9012 conditions, 2503 events. 1672/2503 cut-off events. For 4153/4153 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10814 event pairs, 295 based on Foata normal form. 1/2504 useless extension candidates. Maximal degree in co-relation 8516. Up to 1996 conditions per place. [2023-09-01 14:01:10,221 INFO L137 encePairwiseOnDemand]: 402/415 looper letters, 103 selfloop transitions, 71 changer transitions 6/180 dead transitions. [2023-09-01 14:01:10,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 180 transitions, 1342 flow [2023-09-01 14:01:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 14:01:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 14:01:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2481 transitions. [2023-09-01 14:01:10,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37364457831325304 [2023-09-01 14:01:10,236 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2481 transitions. [2023-09-01 14:01:10,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2481 transitions. [2023-09-01 14:01:10,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:01:10,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2481 transitions. [2023-09-01 14:01:10,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 155.0625) internal successors, (2481), 16 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:10,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:10,252 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:10,252 INFO L175 Difference]: Start difference. First operand has 57 places, 71 transitions, 446 flow. Second operand 16 states and 2481 transitions. [2023-09-01 14:01:10,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 180 transitions, 1342 flow [2023-09-01 14:01:10,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 180 transitions, 1315 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-09-01 14:01:10,263 INFO L231 Difference]: Finished difference. Result has 79 places, 120 transitions, 987 flow [2023-09-01 14:01:10,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=987, PETRI_PLACES=79, PETRI_TRANSITIONS=120} [2023-09-01 14:01:10,266 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 47 predicate places. [2023-09-01 14:01:10,266 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 120 transitions, 987 flow [2023-09-01 14:01:10,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 150.11764705882354) internal successors, (5104), 34 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:10,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:01:10,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:01:10,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 14:01:10,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:01:10,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:01:10,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:01:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash 717847813, now seen corresponding path program 3 times [2023-09-01 14:01:10,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:01:10,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162521922] [2023-09-01 14:01:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:01:10,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:01:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:01:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:11,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:01:11,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162521922] [2023-09-01 14:01:11,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162521922] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:01:11,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898294032] [2023-09-01 14:01:11,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 14:01:11,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:01:11,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:01:11,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:01:11,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 14:01:11,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 14:01:11,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:01:11,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 14:01:11,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:01:11,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:01:11,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 14:01:12,383 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:12,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 111 [2023-09-01 14:01:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:12,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:01:15,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:15,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 132 [2023-09-01 14:01:15,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 90 [2023-09-01 14:01:15,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 78 [2023-09-01 14:01:15,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:15,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 724 treesize of output 708 [2023-09-01 14:01:15,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:15,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 529 treesize of output 520 [2023-09-01 14:01:15,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:15,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 511 treesize of output 502 [2023-09-01 14:01:15,502 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:15,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 493 treesize of output 484 [2023-09-01 14:01:15,536 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:15,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 475 treesize of output 460 [2023-09-01 14:01:15,570 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:15,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 451 treesize of output 442 [2023-09-01 14:01:15,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:15,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 433 treesize of output 412 [2023-09-01 14:01:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:27,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898294032] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:01:27,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:01:27,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37 [2023-09-01 14:01:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146670785] [2023-09-01 14:01:27,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:01:27,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-09-01 14:01:27,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:01:27,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-09-01 14:01:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1242, Unknown=3, NotChecked=0, Total=1482 [2023-09-01 14:01:33,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 415 [2023-09-01 14:01:33,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 120 transitions, 987 flow. Second operand has 39 states, 39 states have (on average 112.84615384615384) internal successors, (4401), 39 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:33,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:01:33,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 415 [2023-09-01 14:01:33,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:01:40,424 INFO L130 PetriNetUnfolder]: 2511/3780 cut-off events. [2023-09-01 14:01:40,425 INFO L131 PetriNetUnfolder]: For 11506/11506 co-relation queries the response was YES. [2023-09-01 14:01:40,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16403 conditions, 3780 events. 2511/3780 cut-off events. For 11506/11506 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 18202 event pairs, 321 based on Foata normal form. 2/3782 useless extension candidates. Maximal degree in co-relation 16116. Up to 2512 conditions per place. [2023-09-01 14:01:40,447 INFO L137 encePairwiseOnDemand]: 399/415 looper letters, 218 selfloop transitions, 233 changer transitions 9/460 dead transitions. [2023-09-01 14:01:40,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 460 transitions, 4074 flow [2023-09-01 14:01:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-09-01 14:01:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-09-01 14:01:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4641 transitions. [2023-09-01 14:01:40,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28674698795180725 [2023-09-01 14:01:40,517 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4641 transitions. [2023-09-01 14:01:40,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4641 transitions. [2023-09-01 14:01:40,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:01:40,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4641 transitions. [2023-09-01 14:01:40,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 119.0) internal successors, (4641), 39 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:40,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 415.0) internal successors, (16600), 40 states have internal predecessors, (16600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:40,550 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 415.0) internal successors, (16600), 40 states have internal predecessors, (16600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:40,550 INFO L175 Difference]: Start difference. First operand has 79 places, 120 transitions, 987 flow. Second operand 39 states and 4641 transitions. [2023-09-01 14:01:40,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 460 transitions, 4074 flow [2023-09-01 14:01:40,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 460 transitions, 4045 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-09-01 14:01:40,576 INFO L231 Difference]: Finished difference. Result has 138 places, 309 transitions, 3369 flow [2023-09-01 14:01:40,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3369, PETRI_PLACES=138, PETRI_TRANSITIONS=309} [2023-09-01 14:01:40,577 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2023-09-01 14:01:40,577 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 309 transitions, 3369 flow [2023-09-01 14:01:40,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 112.84615384615384) internal successors, (4401), 39 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:40,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:01:40,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:01:40,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 14:01:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:01:40,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:01:40,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:01:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1798671641, now seen corresponding path program 4 times [2023-09-01 14:01:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:01:40,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595333451] [2023-09-01 14:01:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:01:40,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:01:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:01:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:41,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:01:41,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595333451] [2023-09-01 14:01:41,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595333451] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:01:41,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446892690] [2023-09-01 14:01:41,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 14:01:41,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:01:41,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:01:41,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:01:41,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 14:01:41,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 14:01:41,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:01:41,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 56 conjunts are in the unsatisfiable core [2023-09-01 14:01:41,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:01:42,282 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-09-01 14:01:42,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 99 [2023-09-01 14:01:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:42,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:01:43,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:43,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 72 [2023-09-01 14:01:43,136 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 14:01:43,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 222 treesize of output 98 [2023-09-01 14:01:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:43,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446892690] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:01:43,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:01:43,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 34 [2023-09-01 14:01:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288675117] [2023-09-01 14:01:43,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:01:43,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-09-01 14:01:43,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:01:43,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-09-01 14:01:43,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2023-09-01 14:01:46,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 415 [2023-09-01 14:01:46,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 309 transitions, 3369 flow. Second operand has 36 states, 36 states have (on average 143.0) internal successors, (5148), 36 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:46,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:01:46,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 415 [2023-09-01 14:01:46,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:01:48,224 INFO L130 PetriNetUnfolder]: 2783/4198 cut-off events. [2023-09-01 14:01:48,224 INFO L131 PetriNetUnfolder]: For 26480/26480 co-relation queries the response was YES. [2023-09-01 14:01:48,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23647 conditions, 4198 events. 2783/4198 cut-off events. For 26480/26480 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 20637 event pairs, 395 based on Foata normal form. 2/4200 useless extension candidates. Maximal degree in co-relation 23292. Up to 3056 conditions per place. [2023-09-01 14:01:48,260 INFO L137 encePairwiseOnDemand]: 400/415 looper letters, 178 selfloop transitions, 284 changer transitions 6/468 dead transitions. [2023-09-01 14:01:48,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 468 transitions, 5900 flow [2023-09-01 14:01:48,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 14:01:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 14:01:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2370 transitions. [2023-09-01 14:01:48,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569277108433735 [2023-09-01 14:01:48,266 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2370 transitions. [2023-09-01 14:01:48,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2370 transitions. [2023-09-01 14:01:48,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:01:48,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2370 transitions. [2023-09-01 14:01:48,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 148.125) internal successors, (2370), 16 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:48,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:48,274 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:48,274 INFO L175 Difference]: Start difference. First operand has 138 places, 309 transitions, 3369 flow. Second operand 16 states and 2370 transitions. [2023-09-01 14:01:48,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 468 transitions, 5900 flow [2023-09-01 14:01:48,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 468 transitions, 5366 flow, removed 136 selfloop flow, removed 12 redundant places. [2023-09-01 14:01:48,363 INFO L231 Difference]: Finished difference. Result has 151 places, 410 transitions, 5062 flow [2023-09-01 14:01:48,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5062, PETRI_PLACES=151, PETRI_TRANSITIONS=410} [2023-09-01 14:01:48,365 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2023-09-01 14:01:48,365 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 410 transitions, 5062 flow [2023-09-01 14:01:48,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 143.0) internal successors, (5148), 36 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:01:48,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:01:48,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:01:48,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 14:01:48,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:01:48,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:01:48,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:01:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2048876549, now seen corresponding path program 5 times [2023-09-01 14:01:48,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:01:48,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042764009] [2023-09-01 14:01:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:01:48,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:01:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:01:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:01:49,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:01:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042764009] [2023-09-01 14:01:49,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042764009] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:01:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498459279] [2023-09-01 14:01:49,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 14:01:49,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:01:49,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:01:49,515 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:01:49,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 14:01:49,598 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-09-01 14:01:49,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:01:49,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 59 conjunts are in the unsatisfiable core [2023-09-01 14:01:49,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:01:49,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:01:49,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 14:01:50,163 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-09-01 14:01:50,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 99 [2023-09-01 14:01:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:01:50,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:01:52,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:52,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 750 treesize of output 767 [2023-09-01 14:01:52,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:52,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 542 treesize of output 533 [2023-09-01 14:01:52,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:52,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 524 treesize of output 515 [2023-09-01 14:01:52,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:52,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 506 treesize of output 491 [2023-09-01 14:01:52,818 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:01:52,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 482 treesize of output 473 [2023-09-01 14:01:52,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 464 treesize of output 458 [2023-09-01 14:01:52,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 458 treesize of output 446 [2023-09-01 14:01:52,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 434 [2023-09-01 14:02:18,461 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:02:54,848 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:03:18,714 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:03:33,066 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 14:04:13,207 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:04:37,760 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:07:20,425 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:10:59,583 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:12:43,684 WARN L222 SmtUtils]: Spent 12.69s on a formula simplification. DAG size of input: 1984 DAG size of output: 2011 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15