./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-array.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 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 20:54:49,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 20:54:49,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 20:54:49,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 20:54:49,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 20:54:49,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 20:54:49,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 20:54:49,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 20:54:49,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 20:54:49,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 20:54:49,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 20:54:49,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 20:54:49,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 20:54:49,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 20:54:49,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 20:54:49,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 20:54:49,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 20:54:49,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 20:54:49,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 20:54:49,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 20:54:49,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 20:54:49,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 20:54:49,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 20:54:49,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 20:54:49,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 20:54:49,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 20:54:49,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 20:54:49,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 20:54:49,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 20:54:49,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 20:54:49,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 20:54:49,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 20:54:49,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 20:54:49,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 20:54:49,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 20:54:49,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 20:54:49,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 20:54:49,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 20:54:49,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 20:54:49,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 20:54:49,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 20:54:49,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 20:54:49,831 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 20:54:49,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 20:54:49,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 20:54:49,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 20:54:49,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 20:54:49,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 20:54:49,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 20:54:49,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 20:54:49,834 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 20:54:49,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 20:54:49,835 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 20:54:49,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 20:54:49,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 20:54:49,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 20:54:49,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 20:54:49,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 20:54:49,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 20:54:49,836 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 20:54:49,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 20:54:49,836 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 20:54:49,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 20:54:49,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 20:54:49,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 20:54:49,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 20:54:49,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 20:54:49,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 20:54:49,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 20:54:49,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 20:54:49,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 20:54:49,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 20:54:49,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 20:54:49,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 20:54:49,839 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 20:54:49,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 20:54:49,839 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 20:54:49,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 20:54:50,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 20:54:50,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 20:54:50,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 20:54:50,129 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 20:54:50,129 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 20:54:50,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-08-30 20:54:51,330 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 20:54:51,547 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 20:54:51,547 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-08-30 20:54:51,554 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b693b2b/a96f7b8ebfb44856bbbcb944a1230e7f/FLAGb63d92479 [2023-08-30 20:54:51,568 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b693b2b/a96f7b8ebfb44856bbbcb944a1230e7f [2023-08-30 20:54:51,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 20:54:51,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 20:54:51,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 20:54:51,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 20:54:51,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 20:54:51,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f554c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51, skipping insertion in model container [2023-08-30 20:54:51,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 20:54:51,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 20:54:51,726 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c[2553,2566] [2023-08-30 20:54:51,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 20:54:51,744 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 20:54:51,785 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c[2553,2566] [2023-08-30 20:54:51,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 20:54:51,800 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 20:54:51,801 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 20:54:51,807 INFO L208 MainTranslator]: Completed translation [2023-08-30 20:54:51,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51 WrapperNode [2023-08-30 20:54:51,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 20:54:51,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 20:54:51,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 20:54:51,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 20:54:51,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,856 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2023-08-30 20:54:51,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 20:54:51,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 20:54:51,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 20:54:51,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 20:54:51,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,901 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 20:54:51,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 20:54:51,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 20:54:51,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 20:54:51,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (1/1) ... [2023-08-30 20:54:51,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 20:54:51,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:54:51,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 20:54:51,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 20:54:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 20:54:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 20:54:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 20:54:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 20:54:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 20:54:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 20:54:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 20:54:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 20:54:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 20:54:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 20:54:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 20:54:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 20:54:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 20:54:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 20:54:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 20:54:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 20:54:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 20:54:51,994 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 20:54:52,144 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 20:54:52,145 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 20:54:52,356 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 20:54:52,461 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 20:54:52,461 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 20:54:52,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:54:52 BoogieIcfgContainer [2023-08-30 20:54:52,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 20:54:52,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 20:54:52,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 20:54:52,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 20:54:52,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:54:51" (1/3) ... [2023-08-30 20:54:52,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129c6d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:54:52, skipping insertion in model container [2023-08-30 20:54:52,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:54:51" (2/3) ... [2023-08-30 20:54:52,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129c6d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:54:52, skipping insertion in model container [2023-08-30 20:54:52,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:54:52" (3/3) ... [2023-08-30 20:54:52,498 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2023-08-30 20:54:52,504 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 20:54:52,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 20:54:52,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 20:54:52,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 20:54:52,586 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 20:54:52,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 144 transitions, 312 flow [2023-08-30 20:54:52,686 INFO L130 PetriNetUnfolder]: 12/141 cut-off events. [2023-08-30 20:54:52,686 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:54:52,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 141 events. 12/141 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-08-30 20:54:52,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 144 transitions, 312 flow [2023-08-30 20:54:52,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 131 transitions, 280 flow [2023-08-30 20:54:52,702 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 20:54:52,715 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 131 transitions, 280 flow [2023-08-30 20:54:52,717 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 131 transitions, 280 flow [2023-08-30 20:54:52,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 131 transitions, 280 flow [2023-08-30 20:54:52,746 INFO L130 PetriNetUnfolder]: 12/131 cut-off events. [2023-08-30 20:54:52,747 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:54:52,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 12/131 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 89 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-08-30 20:54:52,749 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-08-30 20:54:57,028 INFO L134 LiptonReduction]: Checked pairs total: 1615 [2023-08-30 20:54:57,029 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-30 20:54:57,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 20:54:57,046 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;@6eb02d12, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 20:54:57,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 20:54:57,051 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-08-30 20:54:57,052 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:54:57,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:54:57,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:54:57,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:54:57,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:54:57,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1107178468, now seen corresponding path program 1 times [2023-08-30 20:54:57,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:54:57,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123998673] [2023-08-30 20:54:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:54:57,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:54:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:54:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:54:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:54:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123998673] [2023-08-30 20:54:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123998673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:54:57,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:54:57,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 20:54:57,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515463473] [2023-08-30 20:54:57,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:54:57,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 20:54:57,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:54:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 20:54:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 20:54:57,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 273 [2023-08-30 20:54:57,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:57,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:54:57,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 273 [2023-08-30 20:54:57,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:54:58,122 INFO L130 PetriNetUnfolder]: 679/943 cut-off events. [2023-08-30 20:54:58,123 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-08-30 20:54:58,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 943 events. 679/943 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3493 event pairs, 265 based on Foata normal form. 0/618 useless extension candidates. Maximal degree in co-relation 765. Up to 370 conditions per place. [2023-08-30 20:54:58,133 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 55 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-08-30 20:54:58,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 65 transitions, 304 flow [2023-08-30 20:54:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 20:54:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 20:54:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 870 transitions. [2023-08-30 20:54:58,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552590266875981 [2023-08-30 20:54:58,154 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 870 transitions. [2023-08-30 20:54:58,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 870 transitions. [2023-08-30 20:54:58,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:54:58,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 870 transitions. [2023-08-30 20:54:58,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.28571428571429) internal successors, (870), 7 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:58,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:58,173 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:58,174 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 7 states and 870 transitions. [2023-08-30 20:54:58,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 65 transitions, 304 flow [2023-08-30 20:54:58,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 65 transitions, 272 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 20:54:58,180 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 97 flow [2023-08-30 20:54:58,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-08-30 20:54:58,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-30 20:54:58,191 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 97 flow [2023-08-30 20:54:58,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:58,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:54:58,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:54:58,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 20:54:58,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:54:58,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:54:58,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1966737023, now seen corresponding path program 1 times [2023-08-30 20:54:58,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:54:58,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003854498] [2023-08-30 20:54:58,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:54:58,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:54:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:54:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:54:58,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:54:58,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003854498] [2023-08-30 20:54:58,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003854498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:54:58,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:54:58,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 20:54:58,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068802901] [2023-08-30 20:54:58,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:54:58,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 20:54:58,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:54:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 20:54:58,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 20:54:58,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 273 [2023-08-30 20:54:58,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:58,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:54:58,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 273 [2023-08-30 20:54:58,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:54:58,584 INFO L130 PetriNetUnfolder]: 342/475 cut-off events. [2023-08-30 20:54:58,585 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-08-30 20:54:58,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 475 events. 342/475 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1468 event pairs, 133 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 1137. Up to 371 conditions per place. [2023-08-30 20:54:58,588 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 30 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-08-30 20:54:58,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 168 flow [2023-08-30 20:54:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 20:54:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 20:54:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 493 transitions. [2023-08-30 20:54:58,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45146520146520147 [2023-08-30 20:54:58,590 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 493 transitions. [2023-08-30 20:54:58,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 493 transitions. [2023-08-30 20:54:58,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:54:58,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 493 transitions. [2023-08-30 20:54:58,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:58,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:58,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:58,595 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 97 flow. Second operand 4 states and 493 transitions. [2023-08-30 20:54:58,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 168 flow [2023-08-30 20:54:58,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 157 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 20:54:58,598 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 77 flow [2023-08-30 20:54:58,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-30 20:54:58,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-30 20:54:58,599 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 77 flow [2023-08-30 20:54:58,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:58,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:54:58,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:54:58,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 20:54:58,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:54:58,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:54:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash -805618038, now seen corresponding path program 1 times [2023-08-30 20:54:58,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:54:58,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312447108] [2023-08-30 20:54:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:54:58,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:54:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:54:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:54:58,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:54:58,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312447108] [2023-08-30 20:54:58,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312447108] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:54:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048353919] [2023-08-30 20:54:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:54:58,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:54:58,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:54:58,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:54:58,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 20:54:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:54:58,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 20:54:58,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:54:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:54:58,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:54:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:54:58,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048353919] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 20:54:58,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 20:54:58,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-30 20:54:58,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616722507] [2023-08-30 20:54:58,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:54:58,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 20:54:58,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:54:58,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 20:54:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-30 20:54:58,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 273 [2023-08-30 20:54:58,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:58,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:54:58,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 273 [2023-08-30 20:54:58,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:54:59,093 INFO L130 PetriNetUnfolder]: 311/453 cut-off events. [2023-08-30 20:54:59,094 INFO L131 PetriNetUnfolder]: For 117/143 co-relation queries the response was YES. [2023-08-30 20:54:59,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 453 events. 311/453 cut-off events. For 117/143 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1443 event pairs, 73 based on Foata normal form. 26/371 useless extension candidates. Maximal degree in co-relation 1011. Up to 349 conditions per place. [2023-08-30 20:54:59,097 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 31 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-30 20:54:59,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 177 flow [2023-08-30 20:54:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 20:54:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 20:54:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 604 transitions. [2023-08-30 20:54:59,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424908424908425 [2023-08-30 20:54:59,100 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 604 transitions. [2023-08-30 20:54:59,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 604 transitions. [2023-08-30 20:54:59,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:54:59,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 604 transitions. [2023-08-30 20:54:59,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:59,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:59,106 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:59,106 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 77 flow. Second operand 5 states and 604 transitions. [2023-08-30 20:54:59,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 177 flow [2023-08-30 20:54:59,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 20:54:59,110 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 88 flow [2023-08-30 20:54:59,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-08-30 20:54:59,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-30 20:54:59,111 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 88 flow [2023-08-30 20:54:59,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:54:59,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:54:59,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:54:59,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 20:54:59,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:54:59,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:54:59,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:54:59,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1619003621, now seen corresponding path program 1 times [2023-08-30 20:54:59,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:54:59,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071472318] [2023-08-30 20:54:59,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:54:59,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:54:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:00,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:00,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071472318] [2023-08-30 20:55:00,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071472318] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:00,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557429899] [2023-08-30 20:55:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:00,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:00,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:00,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:00,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 20:55:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:00,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 20:55:00,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:00,569 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-30 20:55:00,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 59 [2023-08-30 20:55:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:00,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:00,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:00,794 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 85 treesize of output 45 [2023-08-30 20:55:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:00,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557429899] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:00,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:00,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-08-30 20:55:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548518613] [2023-08-30 20:55:00,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:00,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 20:55:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 20:55:00,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-08-30 20:55:01,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 273 [2023-08-30 20:55:01,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 88 flow. Second operand has 23 states, 23 states have (on average 101.6086956521739) internal successors, (2337), 23 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:01,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:01,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 273 [2023-08-30 20:55:01,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:02,428 INFO L130 PetriNetUnfolder]: 599/864 cut-off events. [2023-08-30 20:55:02,428 INFO L131 PetriNetUnfolder]: For 286/286 co-relation queries the response was YES. [2023-08-30 20:55:02,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 864 events. 599/864 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3184 event pairs, 84 based on Foata normal form. 1/639 useless extension candidates. Maximal degree in co-relation 1966. Up to 639 conditions per place. [2023-08-30 20:55:02,434 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 64 selfloop transitions, 25 changer transitions 1/91 dead transitions. [2023-08-30 20:55:02,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 91 transitions, 453 flow [2023-08-30 20:55:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 20:55:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 20:55:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1077 transitions. [2023-08-30 20:55:02,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945054945054945 [2023-08-30 20:55:02,455 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1077 transitions. [2023-08-30 20:55:02,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1077 transitions. [2023-08-30 20:55:02,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:02,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1077 transitions. [2023-08-30 20:55:02,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.7) internal successors, (1077), 10 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:02,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:02,465 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:02,465 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 88 flow. Second operand 10 states and 1077 transitions. [2023-08-30 20:55:02,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 91 transitions, 453 flow [2023-08-30 20:55:02,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 91 transitions, 431 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 20:55:02,470 INFO L231 Difference]: Finished difference. Result has 45 places, 50 transitions, 230 flow [2023-08-30 20:55:02,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=230, PETRI_PLACES=45, PETRI_TRANSITIONS=50} [2023-08-30 20:55:02,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2023-08-30 20:55:02,472 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 50 transitions, 230 flow [2023-08-30 20:55:02,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 101.6086956521739) internal successors, (2337), 23 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:02,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:02,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:02,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:02,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 20:55:02,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:02,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash 431023461, now seen corresponding path program 2 times [2023-08-30 20:55:02,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:02,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589913702] [2023-08-30 20:55:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:02,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:03,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:03,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589913702] [2023-08-30 20:55:03,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589913702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:03,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865756812] [2023-08-30 20:55:03,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:55:03,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:03,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:03,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:03,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 20:55:03,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:55:03,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:03,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 20:55:03,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:03,738 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:03,740 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:03,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-08-30 20:55:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:03,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:03,914 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:03,914 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 85 treesize of output 45 [2023-08-30 20:55:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:04,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865756812] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:04,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:04,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-08-30 20:55:04,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930809739] [2023-08-30 20:55:04,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:04,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 20:55:04,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:04,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 20:55:04,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2023-08-30 20:55:05,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 273 [2023-08-30 20:55:05,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 50 transitions, 230 flow. Second operand has 25 states, 25 states have (on average 98.52) internal successors, (2463), 25 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:05,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:05,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 273 [2023-08-30 20:55:05,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:06,319 INFO L130 PetriNetUnfolder]: 843/1253 cut-off events. [2023-08-30 20:55:06,319 INFO L131 PetriNetUnfolder]: For 848/848 co-relation queries the response was YES. [2023-08-30 20:55:06,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 1253 events. 843/1253 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4605 event pairs, 128 based on Foata normal form. 16/1269 useless extension candidates. Maximal degree in co-relation 2872. Up to 832 conditions per place. [2023-08-30 20:55:06,327 INFO L137 encePairwiseOnDemand]: 261/273 looper letters, 98 selfloop transitions, 57 changer transitions 7/162 dead transitions. [2023-08-30 20:55:06,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 162 transitions, 949 flow [2023-08-30 20:55:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 20:55:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 20:55:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2168 transitions. [2023-08-30 20:55:06,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37816152101866385 [2023-08-30 20:55:06,333 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2168 transitions. [2023-08-30 20:55:06,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2168 transitions. [2023-08-30 20:55:06,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:06,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2168 transitions. [2023-08-30 20:55:06,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 103.23809523809524) internal successors, (2168), 21 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:06,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:06,347 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:06,347 INFO L175 Difference]: Start difference. First operand has 45 places, 50 transitions, 230 flow. Second operand 21 states and 2168 transitions. [2023-08-30 20:55:06,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 162 transitions, 949 flow [2023-08-30 20:55:06,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 162 transitions, 943 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 20:55:06,352 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 625 flow [2023-08-30 20:55:06,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=625, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2023-08-30 20:55:06,353 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2023-08-30 20:55:06,353 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 625 flow [2023-08-30 20:55:06,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.52) internal successors, (2463), 25 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:06,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:06,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:06,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:06,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:06,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:06,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:06,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1301817307, now seen corresponding path program 3 times [2023-08-30 20:55:06,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:06,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778802126] [2023-08-30 20:55:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:06,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:07,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:07,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778802126] [2023-08-30 20:55:07,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778802126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:07,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205897756] [2023-08-30 20:55:07,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 20:55:07,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:07,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:07,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:07,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 20:55:07,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 20:55:07,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:07,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 20:55:07,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:07,608 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:07,611 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:07,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-08-30 20:55:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:07,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:07,813 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:07,813 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 85 treesize of output 45 [2023-08-30 20:55:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:07,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205897756] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:07,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:07,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-08-30 20:55:07,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053682825] [2023-08-30 20:55:07,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:07,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 20:55:07,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:07,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 20:55:07,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-08-30 20:55:08,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 273 [2023-08-30 20:55:08,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 625 flow. Second operand has 23 states, 23 states have (on average 102.6086956521739) internal successors, (2360), 23 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:08,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:08,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 273 [2023-08-30 20:55:08,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:09,947 INFO L130 PetriNetUnfolder]: 1085/1624 cut-off events. [2023-08-30 20:55:09,948 INFO L131 PetriNetUnfolder]: For 3498/3528 co-relation queries the response was YES. [2023-08-30 20:55:09,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6522 conditions, 1624 events. 1085/1624 cut-off events. For 3498/3528 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6901 event pairs, 159 based on Foata normal form. 32/1632 useless extension candidates. Maximal degree in co-relation 6485. Up to 958 conditions per place. [2023-08-30 20:55:09,961 INFO L137 encePairwiseOnDemand]: 260/273 looper letters, 106 selfloop transitions, 62 changer transitions 4/177 dead transitions. [2023-08-30 20:55:09,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 177 transitions, 1332 flow [2023-08-30 20:55:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 20:55:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 20:55:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1426 transitions. [2023-08-30 20:55:09,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40180332488024795 [2023-08-30 20:55:09,965 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1426 transitions. [2023-08-30 20:55:09,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1426 transitions. [2023-08-30 20:55:09,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:09,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1426 transitions. [2023-08-30 20:55:09,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 109.6923076923077) internal successors, (1426), 13 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:09,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:09,975 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:09,975 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 625 flow. Second operand 13 states and 1426 transitions. [2023-08-30 20:55:09,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 177 transitions, 1332 flow [2023-08-30 20:55:09,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 177 transitions, 1293 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-08-30 20:55:09,988 INFO L231 Difference]: Finished difference. Result has 91 places, 111 transitions, 940 flow [2023-08-30 20:55:09,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=940, PETRI_PLACES=91, PETRI_TRANSITIONS=111} [2023-08-30 20:55:09,991 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2023-08-30 20:55:09,991 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 111 transitions, 940 flow [2023-08-30 20:55:09,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 102.6086956521739) internal successors, (2360), 23 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:09,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:09,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:10,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:10,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:10,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:10,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:10,199 INFO L85 PathProgramCache]: Analyzing trace with hash -864561951, now seen corresponding path program 4 times [2023-08-30 20:55:10,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:10,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576697714] [2023-08-30 20:55:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:10,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:11,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:11,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576697714] [2023-08-30 20:55:11,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576697714] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:11,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872548887] [2023-08-30 20:55:11,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 20:55:11,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:11,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:11,027 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:11,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 20:55:11,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 20:55:11,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:11,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-30 20:55:11,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:11,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 20:55:11,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 20:55:11,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 20:55:11,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:55:11,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-30 20:55:11,691 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:11,693 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:11,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-08-30 20:55:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:11,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:11,901 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse1))) (or (<= c_~min2~0 .cse0) (= c_~min1~0 .cse0)))) (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_265 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse1) c_~min2~0))))) is different from false [2023-08-30 20:55:12,596 WARN L839 $PredicateComparison]: unable to prove that (and (or (= c_~min2~0 c_~min1~0) (forall ((~M~0 Int) (v_ArrVal_263 (Array Int Int)) (v_ArrVal_265 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (or (< 0 ~M~0) (< ~M~0 0) (< (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) c_~min1~0) (< (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~min2~0))))) (forall ((~M~0 Int)) (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (or (< (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) c_~min1~0) (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse2 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (= c_~min1~0 .cse2) (<= c_~min2~0 .cse2))))))) (< 0 ~M~0) (< ~M~0 0))) (forall ((~M~0 Int)) (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= c_~min1~0 .cse3) (forall ((v_ArrVal_265 (Array Int Int))) (< (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~min2~0)) (= c_~min2~0 .cse3))))) (< 0 ~M~0) (< ~M~0 0))) (forall ((~M~0 Int)) (or (< 0 ~M~0) (< ~M~0 0) (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (let ((.cse5 (select (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= c_~min1~0 .cse5) (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (<= c_~min2~0 .cse6) (= .cse6 .cse5))))))))))) is different from false [2023-08-30 20:55:12,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:12,660 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 112 treesize of output 76 [2023-08-30 20:55:12,676 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:12,677 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 1730 treesize of output 1586 [2023-08-30 20:55:12,719 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:12,720 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 322 treesize of output 290 [2023-08-30 20:55:12,743 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 220 treesize of output 172 [2023-08-30 20:55:12,754 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:12,754 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 122 treesize of output 108 [2023-08-30 20:55:12,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:12,815 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 90 treesize of output 66 [2023-08-30 20:55:12,819 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:12,826 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:12,827 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 186 treesize of output 170 [2023-08-30 20:55:12,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:55:12,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 75 [2023-08-30 20:55:12,848 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:12,848 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 152 treesize of output 128 [2023-08-30 20:55:12,907 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:12,908 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 83 treesize of output 59 [2023-08-30 20:55:12,912 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:12,920 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:12,920 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 372 treesize of output 344 [2023-08-30 20:55:12,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:55:12,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 64 [2023-08-30 20:55:12,971 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:12,972 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 81 treesize of output 65 [2023-08-30 20:55:13,006 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:13,007 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 58 treesize of output 46 [2023-08-30 20:55:13,010 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:13,017 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:13,017 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 111 [2023-08-30 20:55:13,030 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:13,030 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 107 treesize of output 95 [2023-08-30 20:55:13,044 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:55:13,044 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 49 treesize of output 45 [2023-08-30 20:55:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 20:55:13,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872548887] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:13,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:13,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-08-30 20:55:13,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812427221] [2023-08-30 20:55:13,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:13,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 20:55:13,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 20:55:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=698, Unknown=4, NotChecked=110, Total=930 [2023-08-30 20:55:13,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 273 [2023-08-30 20:55:13,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 111 transitions, 940 flow. Second operand has 31 states, 31 states have (on average 73.93548387096774) internal successors, (2292), 31 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:13,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:13,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 273 [2023-08-30 20:55:13,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:16,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 20:55:18,033 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~min2~0 c_~min1~0))) (and (or .cse0 (<= (+ c_thread3Thread1of1ForFork0_~i~2 1) c_~N~0)) (or (let ((.cse2 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse2))) (or (<= c_~min2~0 .cse1) (= c_~min1~0 .cse1)))) (or .cse0 (forall ((v_ArrVal_265 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse2) c_~min2~0))))) (< c_thread1Thread1of1ForFork1_~i~0 c_~N~0)))) is different from false [2023-08-30 20:55:21,116 INFO L130 PetriNetUnfolder]: 1973/2995 cut-off events. [2023-08-30 20:55:21,117 INFO L131 PetriNetUnfolder]: For 11622/11719 co-relation queries the response was YES. [2023-08-30 20:55:21,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13635 conditions, 2995 events. 1973/2995 cut-off events. For 11622/11719 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15009 event pairs, 159 based on Foata normal form. 50/3005 useless extension candidates. Maximal degree in co-relation 13593. Up to 1342 conditions per place. [2023-08-30 20:55:21,144 INFO L137 encePairwiseOnDemand]: 255/273 looper letters, 174 selfloop transitions, 210 changer transitions 6/395 dead transitions. [2023-08-30 20:55:21,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 395 transitions, 3301 flow [2023-08-30 20:55:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 20:55:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 20:55:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2814 transitions. [2023-08-30 20:55:21,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2945054945054945 [2023-08-30 20:55:21,153 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2814 transitions. [2023-08-30 20:55:21,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2814 transitions. [2023-08-30 20:55:21,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:21,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2814 transitions. [2023-08-30 20:55:21,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 80.4) internal successors, (2814), 35 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:21,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 273.0) internal successors, (9828), 36 states have internal predecessors, (9828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:21,174 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 273.0) internal successors, (9828), 36 states have internal predecessors, (9828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:21,174 INFO L175 Difference]: Start difference. First operand has 91 places, 111 transitions, 940 flow. Second operand 35 states and 2814 transitions. [2023-08-30 20:55:21,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 395 transitions, 3301 flow [2023-08-30 20:55:21,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 395 transitions, 3144 flow, removed 58 selfloop flow, removed 5 redundant places. [2023-08-30 20:55:21,205 INFO L231 Difference]: Finished difference. Result has 135 places, 270 transitions, 2703 flow [2023-08-30 20:55:21,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2703, PETRI_PLACES=135, PETRI_TRANSITIONS=270} [2023-08-30 20:55:21,206 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2023-08-30 20:55:21,206 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 270 transitions, 2703 flow [2023-08-30 20:55:21,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 73.93548387096774) internal successors, (2292), 31 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:21,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:21,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:21,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:21,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:21,413 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:21,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash -148406021, now seen corresponding path program 5 times [2023-08-30 20:55:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:21,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997375990] [2023-08-30 20:55:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:21,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997375990] [2023-08-30 20:55:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997375990] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825258005] [2023-08-30 20:55:21,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 20:55:21,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:21,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:21,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:21,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 20:55:22,030 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 20:55:22,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:22,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 20:55:22,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:22,349 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:22,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 67 [2023-08-30 20:55:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:22,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:22,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:22,732 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 85 treesize of output 45 [2023-08-30 20:55:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:22,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825258005] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:22,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:22,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 22 [2023-08-30 20:55:22,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057421813] [2023-08-30 20:55:22,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:22,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 20:55:22,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:22,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 20:55:22,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2023-08-30 20:55:23,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-08-30 20:55:23,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 270 transitions, 2703 flow. Second operand has 24 states, 24 states have (on average 99.625) internal successors, (2391), 24 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:23,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:23,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-08-30 20:55:23,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:27,642 INFO L130 PetriNetUnfolder]: 3127/4650 cut-off events. [2023-08-30 20:55:27,642 INFO L131 PetriNetUnfolder]: For 56103/56103 co-relation queries the response was YES. [2023-08-30 20:55:27,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32250 conditions, 4650 events. 3127/4650 cut-off events. For 56103/56103 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 23047 event pairs, 350 based on Foata normal form. 4/4654 useless extension candidates. Maximal degree in co-relation 32192. Up to 2770 conditions per place. [2023-08-30 20:55:27,744 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 345 selfloop transitions, 256 changer transitions 12/613 dead transitions. [2023-08-30 20:55:27,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 613 transitions, 7862 flow [2023-08-30 20:55:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-30 20:55:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-30 20:55:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4781 transitions. [2023-08-30 20:55:27,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38071348940914157 [2023-08-30 20:55:27,762 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4781 transitions. [2023-08-30 20:55:27,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4781 transitions. [2023-08-30 20:55:27,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:27,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4781 transitions. [2023-08-30 20:55:27,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 103.93478260869566) internal successors, (4781), 46 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:27,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 273.0) internal successors, (12831), 47 states have internal predecessors, (12831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:27,808 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 273.0) internal successors, (12831), 47 states have internal predecessors, (12831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:27,808 INFO L175 Difference]: Start difference. First operand has 135 places, 270 transitions, 2703 flow. Second operand 46 states and 4781 transitions. [2023-08-30 20:55:27,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 613 transitions, 7862 flow [2023-08-30 20:55:27,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 613 transitions, 7161 flow, removed 340 selfloop flow, removed 5 redundant places. [2023-08-30 20:55:27,995 INFO L231 Difference]: Finished difference. Result has 188 places, 452 transitions, 4708 flow [2023-08-30 20:55:27,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4708, PETRI_PLACES=188, PETRI_TRANSITIONS=452} [2023-08-30 20:55:27,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2023-08-30 20:55:27,999 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 452 transitions, 4708 flow [2023-08-30 20:55:28,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 99.625) internal successors, (2391), 24 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:28,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:28,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:28,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:28,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:28,206 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:28,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash -34831059, now seen corresponding path program 6 times [2023-08-30 20:55:28,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:28,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437265606] [2023-08-30 20:55:28,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:28,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:28,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:28,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437265606] [2023-08-30 20:55:28,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437265606] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:28,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777319709] [2023-08-30 20:55:28,990 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 20:55:28,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:28,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:28,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:28,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 20:55:29,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 20:55:29,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:29,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 20:55:29,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:29,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 56 treesize of output 32 [2023-08-30 20:55:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:29,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:29,440 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:29,440 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 73 treesize of output 45 [2023-08-30 20:55:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:29,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777319709] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:29,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:29,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 22 [2023-08-30 20:55:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420359440] [2023-08-30 20:55:29,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:29,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 20:55:29,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 20:55:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-08-30 20:55:30,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 273 [2023-08-30 20:55:30,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 452 transitions, 4708 flow. Second operand has 24 states, 24 states have (on average 93.54166666666667) internal successors, (2245), 24 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:30,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:30,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 273 [2023-08-30 20:55:30,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:32,075 INFO L130 PetriNetUnfolder]: 3637/5414 cut-off events. [2023-08-30 20:55:32,075 INFO L131 PetriNetUnfolder]: For 68996/68996 co-relation queries the response was YES. [2023-08-30 20:55:32,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39051 conditions, 5414 events. 3637/5414 cut-off events. For 68996/68996 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 27644 event pairs, 663 based on Foata normal form. 4/5406 useless extension candidates. Maximal degree in co-relation 38980. Up to 4596 conditions per place. [2023-08-30 20:55:32,132 INFO L137 encePairwiseOnDemand]: 260/273 looper letters, 446 selfloop transitions, 156 changer transitions 3/605 dead transitions. [2023-08-30 20:55:32,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 605 transitions, 7816 flow [2023-08-30 20:55:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 20:55:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 20:55:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2170 transitions. [2023-08-30 20:55:32,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613053613053613 [2023-08-30 20:55:32,137 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2170 transitions. [2023-08-30 20:55:32,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2170 transitions. [2023-08-30 20:55:32,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:32,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2170 transitions. [2023-08-30 20:55:32,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 98.63636363636364) internal successors, (2170), 22 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:32,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:32,147 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:32,148 INFO L175 Difference]: Start difference. First operand has 188 places, 452 transitions, 4708 flow. Second operand 22 states and 2170 transitions. [2023-08-30 20:55:32,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 605 transitions, 7816 flow [2023-08-30 20:55:32,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 605 transitions, 6936 flow, removed 421 selfloop flow, removed 4 redundant places. [2023-08-30 20:55:32,404 INFO L231 Difference]: Finished difference. Result has 212 places, 518 transitions, 5196 flow [2023-08-30 20:55:32,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4058, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5196, PETRI_PLACES=212, PETRI_TRANSITIONS=518} [2023-08-30 20:55:32,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2023-08-30 20:55:32,406 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 518 transitions, 5196 flow [2023-08-30 20:55:32,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 93.54166666666667) internal successors, (2245), 24 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:32,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:32,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:32,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:32,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:32,609 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:32,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:32,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2082549841, now seen corresponding path program 7 times [2023-08-30 20:55:32,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:32,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589859758] [2023-08-30 20:55:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:32,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:33,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:33,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589859758] [2023-08-30 20:55:33,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589859758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:33,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302975214] [2023-08-30 20:55:33,394 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 20:55:33,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:33,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:33,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:33,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 20:55:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:33,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-30 20:55:33,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:33,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:55:33,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-30 20:55:33,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:55:33,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-30 20:55:34,137 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:55:34,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:34,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-08-30 20:55:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:34,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:34,332 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_399 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_399) c_~A~0.base) .cse0) c_~min2~0))) (forall ((v_ArrVal_399 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_399) c_~A~0.base) .cse0))) (or (<= c_~min2~0 .cse1) (= .cse1 c_~min1~0)))))) is different from false [2023-08-30 20:55:34,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:55:34,443 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 331 treesize of output 283 [2023-08-30 20:55:34,450 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 183 treesize of output 159 [2023-08-30 20:55:34,455 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 159 treesize of output 153 [2023-08-30 20:55:34,462 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 153 treesize of output 141 [2023-08-30 20:55:34,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 129 [2023-08-30 20:55:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:34,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302975214] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:34,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:34,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 28 [2023-08-30 20:55:34,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810006882] [2023-08-30 20:55:34,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:34,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 20:55:34,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 20:55:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=694, Unknown=12, NotChecked=54, Total=870 [2023-08-30 20:55:34,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 273 [2023-08-30 20:55:34,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 518 transitions, 5196 flow. Second operand has 30 states, 30 states have (on average 74.13333333333334) internal successors, (2224), 30 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:34,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:34,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 273 [2023-08-30 20:55:34,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:39,681 INFO L130 PetriNetUnfolder]: 4783/7209 cut-off events. [2023-08-30 20:55:39,682 INFO L131 PetriNetUnfolder]: For 93270/93270 co-relation queries the response was YES. [2023-08-30 20:55:39,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50288 conditions, 7209 events. 4783/7209 cut-off events. For 93270/93270 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 40231 event pairs, 399 based on Foata normal form. 119/7308 useless extension candidates. Maximal degree in co-relation 50211. Up to 4594 conditions per place. [2023-08-30 20:55:39,746 INFO L137 encePairwiseOnDemand]: 255/273 looper letters, 525 selfloop transitions, 340 changer transitions 8/873 dead transitions. [2023-08-30 20:55:39,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 873 transitions, 10251 flow [2023-08-30 20:55:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 20:55:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 20:55:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1809 transitions. [2023-08-30 20:55:39,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3011988011988012 [2023-08-30 20:55:39,750 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1809 transitions. [2023-08-30 20:55:39,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1809 transitions. [2023-08-30 20:55:39,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:39,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1809 transitions. [2023-08-30 20:55:39,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 82.22727272727273) internal successors, (1809), 22 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:39,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:39,759 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:39,759 INFO L175 Difference]: Start difference. First operand has 212 places, 518 transitions, 5196 flow. Second operand 22 states and 1809 transitions. [2023-08-30 20:55:39,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 873 transitions, 10251 flow [2023-08-30 20:55:40,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 873 transitions, 9875 flow, removed 118 selfloop flow, removed 13 redundant places. [2023-08-30 20:55:40,010 INFO L231 Difference]: Finished difference. Result has 230 places, 691 transitions, 7575 flow [2023-08-30 20:55:40,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4834, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7575, PETRI_PLACES=230, PETRI_TRANSITIONS=691} [2023-08-30 20:55:40,011 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2023-08-30 20:55:40,011 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 691 transitions, 7575 flow [2023-08-30 20:55:40,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 74.13333333333334) internal successors, (2224), 30 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:40,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:40,012 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:40,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:40,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 20:55:40,214 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:40,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:40,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1642410344, now seen corresponding path program 8 times [2023-08-30 20:55:40,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:40,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497002401] [2023-08-30 20:55:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:40,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:40,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:40,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497002401] [2023-08-30 20:55:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497002401] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46467951] [2023-08-30 20:55:40,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:55:40,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:40,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:40,316 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:40,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 20:55:40,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:55:40,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:40,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 20:55:40,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:40,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:40,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46467951] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:40,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:40,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-30 20:55:40,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286899447] [2023-08-30 20:55:40,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:40,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 20:55:40,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:40,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 20:55:40,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-30 20:55:40,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 273 [2023-08-30 20:55:40,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 691 transitions, 7575 flow. Second operand has 14 states, 14 states have (on average 116.42857142857143) internal successors, (1630), 14 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:40,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:40,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 273 [2023-08-30 20:55:40,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:41,840 INFO L130 PetriNetUnfolder]: 4128/6270 cut-off events. [2023-08-30 20:55:41,840 INFO L131 PetriNetUnfolder]: For 111747/112058 co-relation queries the response was YES. [2023-08-30 20:55:41,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50355 conditions, 6270 events. 4128/6270 cut-off events. For 111747/112058 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 35650 event pairs, 1019 based on Foata normal form. 221/6355 useless extension candidates. Maximal degree in co-relation 50269. Up to 4078 conditions per place. [2023-08-30 20:55:41,931 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 537 selfloop transitions, 101 changer transitions 0/696 dead transitions. [2023-08-30 20:55:41,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 696 transitions, 9012 flow [2023-08-30 20:55:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 20:55:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 20:55:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 863 transitions. [2023-08-30 20:55:41,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45159602302459445 [2023-08-30 20:55:41,933 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 863 transitions. [2023-08-30 20:55:41,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 863 transitions. [2023-08-30 20:55:41,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:41,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 863 transitions. [2023-08-30 20:55:41,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:41,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:41,938 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:41,938 INFO L175 Difference]: Start difference. First operand has 230 places, 691 transitions, 7575 flow. Second operand 7 states and 863 transitions. [2023-08-30 20:55:41,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 696 transitions, 9012 flow [2023-08-30 20:55:42,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 696 transitions, 8349 flow, removed 238 selfloop flow, removed 16 redundant places. [2023-08-30 20:55:42,296 INFO L231 Difference]: Finished difference. Result has 218 places, 615 transitions, 6628 flow [2023-08-30 20:55:42,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5995, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6628, PETRI_PLACES=218, PETRI_TRANSITIONS=615} [2023-08-30 20:55:42,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2023-08-30 20:55:42,297 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 615 transitions, 6628 flow [2023-08-30 20:55:42,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 116.42857142857143) internal successors, (1630), 14 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:42,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:42,298 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:42,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 20:55:42,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:42,505 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:42,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash -585089220, now seen corresponding path program 9 times [2023-08-30 20:55:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:42,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721393621] [2023-08-30 20:55:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:42,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:42,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721393621] [2023-08-30 20:55:42,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721393621] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:42,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100356849] [2023-08-30 20:55:42,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 20:55:42,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:42,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:42,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:42,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 20:55:42,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 20:55:42,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:42,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 20:55:42,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:42,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:42,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100356849] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:42,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:42,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-30 20:55:42,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814716870] [2023-08-30 20:55:42,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:42,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 20:55:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:42,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 20:55:42,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-30 20:55:43,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 273 [2023-08-30 20:55:43,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 615 transitions, 6628 flow. Second operand has 14 states, 14 states have (on average 116.35714285714286) internal successors, (1629), 14 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:43,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:43,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 273 [2023-08-30 20:55:43,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:44,341 INFO L130 PetriNetUnfolder]: 3506/5482 cut-off events. [2023-08-30 20:55:44,341 INFO L131 PetriNetUnfolder]: For 78070/78254 co-relation queries the response was YES. [2023-08-30 20:55:44,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41212 conditions, 5482 events. 3506/5482 cut-off events. For 78070/78254 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 31843 event pairs, 651 based on Foata normal form. 380/5744 useless extension candidates. Maximal degree in co-relation 41130. Up to 2778 conditions per place. [2023-08-30 20:55:44,387 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 508 selfloop transitions, 46 changer transitions 2/612 dead transitions. [2023-08-30 20:55:44,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 612 transitions, 7887 flow [2023-08-30 20:55:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 20:55:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 20:55:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 984 transitions. [2023-08-30 20:55:44,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2023-08-30 20:55:44,389 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 984 transitions. [2023-08-30 20:55:44,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 984 transitions. [2023-08-30 20:55:44,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:44,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 984 transitions. [2023-08-30 20:55:44,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:44,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:44,393 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:44,393 INFO L175 Difference]: Start difference. First operand has 218 places, 615 transitions, 6628 flow. Second operand 8 states and 984 transitions. [2023-08-30 20:55:44,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 612 transitions, 7887 flow [2023-08-30 20:55:44,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 612 transitions, 7714 flow, removed 84 selfloop flow, removed 7 redundant places. [2023-08-30 20:55:44,582 INFO L231 Difference]: Finished difference. Result has 214 places, 529 transitions, 5851 flow [2023-08-30 20:55:44,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5695, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5851, PETRI_PLACES=214, PETRI_TRANSITIONS=529} [2023-08-30 20:55:44,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2023-08-30 20:55:44,583 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 529 transitions, 5851 flow [2023-08-30 20:55:44,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 116.35714285714286) internal successors, (1629), 14 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:44,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:44,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:44,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:44,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 20:55:44,784 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:44,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1161829535, now seen corresponding path program 1 times [2023-08-30 20:55:44,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:44,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374851573] [2023-08-30 20:55:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:44,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:44,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:44,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374851573] [2023-08-30 20:55:44,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374851573] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:44,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301113289] [2023-08-30 20:55:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:44,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:44,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:44,897 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:44,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 20:55:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:44,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 20:55:44,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:45,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:45,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301113289] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:45,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:45,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-30 20:55:45,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390308896] [2023-08-30 20:55:45,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:45,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 20:55:45,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:45,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 20:55:45,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-30 20:55:45,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-08-30 20:55:45,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 529 transitions, 5851 flow. Second operand has 18 states, 18 states have (on average 110.16666666666667) internal successors, (1983), 18 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:45,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:45,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-08-30 20:55:45,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:47,294 INFO L130 PetriNetUnfolder]: 5208/8330 cut-off events. [2023-08-30 20:55:47,294 INFO L131 PetriNetUnfolder]: For 90712/90784 co-relation queries the response was YES. [2023-08-30 20:55:47,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57682 conditions, 8330 events. 5208/8330 cut-off events. For 90712/90784 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 54009 event pairs, 299 based on Foata normal form. 316/8637 useless extension candidates. Maximal degree in co-relation 57602. Up to 3146 conditions per place. [2023-08-30 20:55:47,369 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 917 selfloop transitions, 234 changer transitions 54/1227 dead transitions. [2023-08-30 20:55:47,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1227 transitions, 15470 flow [2023-08-30 20:55:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 20:55:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 20:55:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2346 transitions. [2023-08-30 20:55:47,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42967032967032964 [2023-08-30 20:55:47,373 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2346 transitions. [2023-08-30 20:55:47,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2346 transitions. [2023-08-30 20:55:47,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:47,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2346 transitions. [2023-08-30 20:55:47,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 117.3) internal successors, (2346), 20 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:47,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 273.0) internal successors, (5733), 21 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:47,383 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 273.0) internal successors, (5733), 21 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:47,383 INFO L175 Difference]: Start difference. First operand has 214 places, 529 transitions, 5851 flow. Second operand 20 states and 2346 transitions. [2023-08-30 20:55:47,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1227 transitions, 15470 flow [2023-08-30 20:55:47,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 1227 transitions, 15013 flow, removed 44 selfloop flow, removed 5 redundant places. [2023-08-30 20:55:47,670 INFO L231 Difference]: Finished difference. Result has 238 places, 675 transitions, 8243 flow [2023-08-30 20:55:47,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5615, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8243, PETRI_PLACES=238, PETRI_TRANSITIONS=675} [2023-08-30 20:55:47,671 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2023-08-30 20:55:47,671 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 675 transitions, 8243 flow [2023-08-30 20:55:47,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 110.16666666666667) internal successors, (1983), 18 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:47,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:47,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:47,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 20:55:47,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 20:55:47,873 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:47,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:47,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1744001851, now seen corresponding path program 2 times [2023-08-30 20:55:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:47,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694690263] [2023-08-30 20:55:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:47,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:47,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:47,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694690263] [2023-08-30 20:55:47,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694690263] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:47,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701512279] [2023-08-30 20:55:47,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:55:47,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:47,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:47,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:48,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 20:55:48,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:55:48,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:48,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 20:55:48,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:48,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:48,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701512279] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:48,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:48,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-08-30 20:55:48,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821945081] [2023-08-30 20:55:48,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:48,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 20:55:48,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 20:55:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-08-30 20:55:48,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-08-30 20:55:48,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 675 transitions, 8243 flow. Second operand has 15 states, 15 states have (on average 111.73333333333333) internal successors, (1676), 15 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:48,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:48,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-08-30 20:55:48,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:50,046 INFO L130 PetriNetUnfolder]: 4231/6993 cut-off events. [2023-08-30 20:55:50,046 INFO L131 PetriNetUnfolder]: For 94306/94342 co-relation queries the response was YES. [2023-08-30 20:55:50,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52002 conditions, 6993 events. 4231/6993 cut-off events. For 94306/94342 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 46191 event pairs, 441 based on Foata normal form. 473/7457 useless extension candidates. Maximal degree in co-relation 51913. Up to 3785 conditions per place. [2023-08-30 20:55:50,101 INFO L137 encePairwiseOnDemand]: 266/273 looper letters, 656 selfloop transitions, 61 changer transitions 40/777 dead transitions. [2023-08-30 20:55:50,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 777 transitions, 10179 flow [2023-08-30 20:55:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 20:55:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 20:55:50,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1053 transitions. [2023-08-30 20:55:50,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-08-30 20:55:50,110 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1053 transitions. [2023-08-30 20:55:50,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1053 transitions. [2023-08-30 20:55:50,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:50,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1053 transitions. [2023-08-30 20:55:50,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:50,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:50,113 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:50,113 INFO L175 Difference]: Start difference. First operand has 238 places, 675 transitions, 8243 flow. Second operand 9 states and 1053 transitions. [2023-08-30 20:55:50,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 777 transitions, 10179 flow [2023-08-30 20:55:50,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 777 transitions, 9988 flow, removed 58 selfloop flow, removed 9 redundant places. [2023-08-30 20:55:50,638 INFO L231 Difference]: Finished difference. Result has 231 places, 530 transitions, 6228 flow [2023-08-30 20:55:50,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=6451, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6228, PETRI_PLACES=231, PETRI_TRANSITIONS=530} [2023-08-30 20:55:50,639 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2023-08-30 20:55:50,639 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 530 transitions, 6228 flow [2023-08-30 20:55:50,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 111.73333333333333) internal successors, (1676), 15 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:50,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:50,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:50,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:50,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 20:55:50,845 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:50,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1031989214, now seen corresponding path program 10 times [2023-08-30 20:55:50,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:50,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466261402] [2023-08-30 20:55:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:50,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:50,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:50,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466261402] [2023-08-30 20:55:50,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466261402] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:50,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911894984] [2023-08-30 20:55:50,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 20:55:51,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:51,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:51,001 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:51,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 20:55:51,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 20:55:51,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:51,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 20:55:51,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:51,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:51,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911894984] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:51,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:51,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 17 [2023-08-30 20:55:51,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005417866] [2023-08-30 20:55:51,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:51,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 20:55:51,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:51,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 20:55:51,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-08-30 20:55:51,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 273 [2023-08-30 20:55:51,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 530 transitions, 6228 flow. Second operand has 17 states, 17 states have (on average 112.47058823529412) internal successors, (1912), 17 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:51,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:51,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 273 [2023-08-30 20:55:51,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:52,684 INFO L130 PetriNetUnfolder]: 2773/4695 cut-off events. [2023-08-30 20:55:52,684 INFO L131 PetriNetUnfolder]: For 53022/53119 co-relation queries the response was YES. [2023-08-30 20:55:52,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34022 conditions, 4695 events. 2773/4695 cut-off events. For 53022/53119 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 30255 event pairs, 208 based on Foata normal form. 327/4996 useless extension candidates. Maximal degree in co-relation 33939. Up to 1931 conditions per place. [2023-08-30 20:55:52,718 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 224 selfloop transitions, 150 changer transitions 252/634 dead transitions. [2023-08-30 20:55:52,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 634 transitions, 8655 flow [2023-08-30 20:55:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 20:55:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 20:55:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2202 transitions. [2023-08-30 20:55:52,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42452284557547715 [2023-08-30 20:55:52,723 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2202 transitions. [2023-08-30 20:55:52,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2202 transitions. [2023-08-30 20:55:52,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:52,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2202 transitions. [2023-08-30 20:55:52,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 115.89473684210526) internal successors, (2202), 19 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:52,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:52,730 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:52,730 INFO L175 Difference]: Start difference. First operand has 231 places, 530 transitions, 6228 flow. Second operand 19 states and 2202 transitions. [2023-08-30 20:55:52,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 634 transitions, 8655 flow [2023-08-30 20:55:52,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 634 transitions, 8210 flow, removed 142 selfloop flow, removed 13 redundant places. [2023-08-30 20:55:52,915 INFO L231 Difference]: Finished difference. Result has 232 places, 324 transitions, 3530 flow [2023-08-30 20:55:52,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5425, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3530, PETRI_PLACES=232, PETRI_TRANSITIONS=324} [2023-08-30 20:55:52,916 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2023-08-30 20:55:52,916 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 324 transitions, 3530 flow [2023-08-30 20:55:52,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 112.47058823529412) internal successors, (1912), 17 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:52,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:52,917 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:52,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:53,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 20:55:53,117 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:53,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:53,118 INFO L85 PathProgramCache]: Analyzing trace with hash 743886729, now seen corresponding path program 11 times [2023-08-30 20:55:53,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:53,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607701439] [2023-08-30 20:55:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:53,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:53,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:53,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607701439] [2023-08-30 20:55:53,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607701439] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:53,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164862596] [2023-08-30 20:55:53,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 20:55:53,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:53,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:53,253 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:53,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 20:55:53,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:55:53,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:53,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 20:55:53,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:53,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:53,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164862596] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:53,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:53,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-30 20:55:53,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16364622] [2023-08-30 20:55:53,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:53,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 20:55:53,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:53,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 20:55:53,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-08-30 20:55:53,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-08-30 20:55:53,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 324 transitions, 3530 flow. Second operand has 18 states, 18 states have (on average 106.55555555555556) internal successors, (1918), 18 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:53,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:53,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-08-30 20:55:53,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:54,645 INFO L130 PetriNetUnfolder]: 1612/2350 cut-off events. [2023-08-30 20:55:54,646 INFO L131 PetriNetUnfolder]: For 23617/23617 co-relation queries the response was YES. [2023-08-30 20:55:54,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17710 conditions, 2350 events. 1612/2350 cut-off events. For 23617/23617 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10050 event pairs, 104 based on Foata normal form. 20/2370 useless extension candidates. Maximal degree in co-relation 17649. Up to 1058 conditions per place. [2023-08-30 20:55:54,666 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 282 selfloop transitions, 188 changer transitions 0/470 dead transitions. [2023-08-30 20:55:54,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 470 transitions, 6129 flow [2023-08-30 20:55:54,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 20:55:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 20:55:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2097 transitions. [2023-08-30 20:55:54,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042799305957201 [2023-08-30 20:55:54,669 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2097 transitions. [2023-08-30 20:55:54,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2097 transitions. [2023-08-30 20:55:54,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:54,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2097 transitions. [2023-08-30 20:55:54,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 110.36842105263158) internal successors, (2097), 19 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:54,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:54,676 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:54,677 INFO L175 Difference]: Start difference. First operand has 232 places, 324 transitions, 3530 flow. Second operand 19 states and 2097 transitions. [2023-08-30 20:55:54,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 470 transitions, 6129 flow [2023-08-30 20:55:54,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 470 transitions, 5397 flow, removed 185 selfloop flow, removed 25 redundant places. [2023-08-30 20:55:54,752 INFO L231 Difference]: Finished difference. Result has 169 places, 369 transitions, 4036 flow [2023-08-30 20:55:54,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4036, PETRI_PLACES=169, PETRI_TRANSITIONS=369} [2023-08-30 20:55:54,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2023-08-30 20:55:54,752 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 369 transitions, 4036 flow [2023-08-30 20:55:54,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 106.55555555555556) internal successors, (1918), 18 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:54,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:54,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:54,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:54,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:54,955 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:54,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:54,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1303192607, now seen corresponding path program 12 times [2023-08-30 20:55:54,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:54,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389014960] [2023-08-30 20:55:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:55,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:55,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389014960] [2023-08-30 20:55:55,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389014960] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117152421] [2023-08-30 20:55:55,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 20:55:55,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:55,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:55,119 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:55,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 20:55:55,238 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 20:55:55,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:55,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:55:55,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:55,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:55,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117152421] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:55,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:55,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-08-30 20:55:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72407515] [2023-08-30 20:55:55,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:55,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 20:55:55,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 20:55:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-08-30 20:55:55,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-08-30 20:55:55,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 369 transitions, 4036 flow. Second operand has 19 states, 19 states have (on average 110.05263157894737) internal successors, (2091), 19 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:55,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:55,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-08-30 20:55:55,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:56,311 INFO L130 PetriNetUnfolder]: 1870/2748 cut-off events. [2023-08-30 20:55:56,312 INFO L131 PetriNetUnfolder]: For 23609/23623 co-relation queries the response was YES. [2023-08-30 20:55:56,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19710 conditions, 2748 events. 1870/2748 cut-off events. For 23609/23623 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12275 event pairs, 290 based on Foata normal form. 30/2763 useless extension candidates. Maximal degree in co-relation 19659. Up to 1450 conditions per place. [2023-08-30 20:55:56,336 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 419 selfloop transitions, 88 changer transitions 0/523 dead transitions. [2023-08-30 20:55:56,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 523 transitions, 6578 flow [2023-08-30 20:55:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 20:55:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 20:55:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1040 transitions. [2023-08-30 20:55:56,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2023-08-30 20:55:56,338 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1040 transitions. [2023-08-30 20:55:56,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1040 transitions. [2023-08-30 20:55:56,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:56,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1040 transitions. [2023-08-30 20:55:56,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:56,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:56,341 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:56,341 INFO L175 Difference]: Start difference. First operand has 169 places, 369 transitions, 4036 flow. Second operand 9 states and 1040 transitions. [2023-08-30 20:55:56,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 523 transitions, 6578 flow [2023-08-30 20:55:56,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 523 transitions, 6250 flow, removed 86 selfloop flow, removed 6 redundant places. [2023-08-30 20:55:56,411 INFO L231 Difference]: Finished difference. Result has 173 places, 375 transitions, 4194 flow [2023-08-30 20:55:56,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3681, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4194, PETRI_PLACES=173, PETRI_TRANSITIONS=375} [2023-08-30 20:55:56,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2023-08-30 20:55:56,412 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 375 transitions, 4194 flow [2023-08-30 20:55:56,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 110.05263157894737) internal successors, (2091), 19 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:56,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:56,413 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:56,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:56,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 20:55:56,619 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:56,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:56,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1464757537, now seen corresponding path program 13 times [2023-08-30 20:55:56,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:56,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403591726] [2023-08-30 20:55:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:56,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:56,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:56,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403591726] [2023-08-30 20:55:56,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403591726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:56,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033457313] [2023-08-30 20:55:56,737 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 20:55:56,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:56,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:56,738 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:56,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 20:55:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:56,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:55:56,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:56,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033457313] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:57,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:57,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-30 20:55:57,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580101058] [2023-08-30 20:55:57,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:57,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 20:55:57,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:57,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 20:55:57,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-08-30 20:55:57,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-08-30 20:55:57,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 375 transitions, 4194 flow. Second operand has 20 states, 20 states have (on average 110.1) internal successors, (2202), 20 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:57,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:57,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-08-30 20:55:57,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:58,444 INFO L130 PetriNetUnfolder]: 2934/4325 cut-off events. [2023-08-30 20:55:58,445 INFO L131 PetriNetUnfolder]: For 40666/40685 co-relation queries the response was YES. [2023-08-30 20:55:58,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32232 conditions, 4325 events. 2934/4325 cut-off events. For 40666/40685 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 20955 event pairs, 328 based on Foata normal form. 33/4349 useless extension candidates. Maximal degree in co-relation 32178. Up to 1763 conditions per place. [2023-08-30 20:55:58,488 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 439 selfloop transitions, 235 changer transitions 0/690 dead transitions. [2023-08-30 20:55:58,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 690 transitions, 8843 flow [2023-08-30 20:55:58,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 20:55:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 20:55:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2096 transitions. [2023-08-30 20:55:58,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42653642653642654 [2023-08-30 20:55:58,492 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2096 transitions. [2023-08-30 20:55:58,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2096 transitions. [2023-08-30 20:55:58,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:58,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2096 transitions. [2023-08-30 20:55:58,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 116.44444444444444) internal successors, (2096), 18 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:58,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:58,499 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:58,499 INFO L175 Difference]: Start difference. First operand has 173 places, 375 transitions, 4194 flow. Second operand 18 states and 2096 transitions. [2023-08-30 20:55:58,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 690 transitions, 8843 flow [2023-08-30 20:55:58,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 690 transitions, 8617 flow, removed 75 selfloop flow, removed 4 redundant places. [2023-08-30 20:55:58,667 INFO L231 Difference]: Finished difference. Result has 193 places, 472 transitions, 6033 flow [2023-08-30 20:55:58,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4073, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6033, PETRI_PLACES=193, PETRI_TRANSITIONS=472} [2023-08-30 20:55:58,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2023-08-30 20:55:58,669 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 472 transitions, 6033 flow [2023-08-30 20:55:58,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 110.1) internal successors, (2202), 20 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:58,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:58,669 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:58,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:58,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 20:55:58,870 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:58,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1184715765, now seen corresponding path program 14 times [2023-08-30 20:55:58,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:58,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374928550] [2023-08-30 20:55:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:58,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:59,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:59,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374928550] [2023-08-30 20:55:59,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374928550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:59,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666985545] [2023-08-30 20:55:59,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:55:59,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:59,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:59,043 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:59,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 20:55:59,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:55:59,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:55:59,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:55:59,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:59,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:55:59,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666985545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:55:59,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:55:59,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-08-30 20:55:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022803206] [2023-08-30 20:55:59,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:55:59,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 20:55:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:59,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 20:55:59,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-08-30 20:55:59,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-08-30 20:55:59,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 472 transitions, 6033 flow. Second operand has 21 states, 21 states have (on average 110.14285714285714) internal successors, (2313), 21 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:55:59,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:59,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-08-30 20:55:59,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:56:00,692 INFO L130 PetriNetUnfolder]: 3021/4486 cut-off events. [2023-08-30 20:56:00,692 INFO L131 PetriNetUnfolder]: For 49054/49111 co-relation queries the response was YES. [2023-08-30 20:56:00,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35044 conditions, 4486 events. 3021/4486 cut-off events. For 49054/49111 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 22273 event pairs, 502 based on Foata normal form. 64/4542 useless extension candidates. Maximal degree in co-relation 34983. Up to 2471 conditions per place. [2023-08-30 20:56:00,732 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 505 selfloop transitions, 189 changer transitions 0/710 dead transitions. [2023-08-30 20:56:00,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 710 transitions, 10072 flow [2023-08-30 20:56:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 20:56:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 20:56:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1627 transitions. [2023-08-30 20:56:00,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42569335426478283 [2023-08-30 20:56:00,734 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1627 transitions. [2023-08-30 20:56:00,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1627 transitions. [2023-08-30 20:56:00,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:56:00,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1627 transitions. [2023-08-30 20:56:00,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 116.21428571428571) internal successors, (1627), 14 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:00,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:00,738 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:00,738 INFO L175 Difference]: Start difference. First operand has 193 places, 472 transitions, 6033 flow. Second operand 14 states and 1627 transitions. [2023-08-30 20:56:00,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 710 transitions, 10072 flow [2023-08-30 20:56:00,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 710 transitions, 9765 flow, removed 131 selfloop flow, removed 5 redundant places. [2023-08-30 20:56:00,931 INFO L231 Difference]: Finished difference. Result has 207 places, 534 transitions, 7408 flow [2023-08-30 20:56:00,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5788, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7408, PETRI_PLACES=207, PETRI_TRANSITIONS=534} [2023-08-30 20:56:00,932 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2023-08-30 20:56:00,933 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 534 transitions, 7408 flow [2023-08-30 20:56:00,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 110.14285714285714) internal successors, (2313), 21 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:00,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:56:00,933 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:56:00,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 20:56:01,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:01,139 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:56:01,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:56:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash -599905997, now seen corresponding path program 15 times [2023-08-30 20:56:01,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:56:01,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884515733] [2023-08-30 20:56:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:56:01,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:56:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:56:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:01,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:56:01,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884515733] [2023-08-30 20:56:01,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884515733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:56:01,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625916173] [2023-08-30 20:56:01,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 20:56:01,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:01,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:56:01,289 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:56:01,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 20:56:01,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 20:56:01,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:56:01,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:56:01,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:56:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:01,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:56:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:01,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625916173] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:56:01,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:56:01,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-30 20:56:01,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621509319] [2023-08-30 20:56:01,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:56:01,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 20:56:01,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:56:01,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 20:56:01,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-30 20:56:01,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-08-30 20:56:01,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 534 transitions, 7408 flow. Second operand has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:01,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:56:01,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-08-30 20:56:01,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:56:02,739 INFO L130 PetriNetUnfolder]: 2985/4407 cut-off events. [2023-08-30 20:56:02,739 INFO L131 PetriNetUnfolder]: For 51804/51861 co-relation queries the response was YES. [2023-08-30 20:56:02,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35529 conditions, 4407 events. 2985/4407 cut-off events. For 51804/51861 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 21545 event pairs, 548 based on Foata normal form. 64/4462 useless extension candidates. Maximal degree in co-relation 35462. Up to 2575 conditions per place. [2023-08-30 20:56:02,786 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 483 selfloop transitions, 131 changer transitions 0/630 dead transitions. [2023-08-30 20:56:02,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 630 transitions, 9534 flow [2023-08-30 20:56:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 20:56:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 20:56:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1040 transitions. [2023-08-30 20:56:02,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2023-08-30 20:56:02,788 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1040 transitions. [2023-08-30 20:56:02,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1040 transitions. [2023-08-30 20:56:02,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:56:02,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1040 transitions. [2023-08-30 20:56:02,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:02,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:02,791 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:02,791 INFO L175 Difference]: Start difference. First operand has 207 places, 534 transitions, 7408 flow. Second operand 9 states and 1040 transitions. [2023-08-30 20:56:02,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 630 transitions, 9534 flow [2023-08-30 20:56:03,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 630 transitions, 9377 flow, removed 76 selfloop flow, removed 3 redundant places. [2023-08-30 20:56:03,025 INFO L231 Difference]: Finished difference. Result has 212 places, 528 transitions, 7419 flow [2023-08-30 20:56:03,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=7041, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7419, PETRI_PLACES=212, PETRI_TRANSITIONS=528} [2023-08-30 20:56:03,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2023-08-30 20:56:03,026 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 528 transitions, 7419 flow [2023-08-30 20:56:03,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:03,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:56:03,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:56:03,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 20:56:03,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:03,227 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:56:03,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:56:03,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1498027795, now seen corresponding path program 16 times [2023-08-30 20:56:03,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:56:03,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115774286] [2023-08-30 20:56:03,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:56:03,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:56:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:56:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:03,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:56:03,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115774286] [2023-08-30 20:56:03,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115774286] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:56:03,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073619563] [2023-08-30 20:56:03,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 20:56:03,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:03,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:56:03,378 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:56:03,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 20:56:03,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 20:56:03,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:56:03,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 20:56:03,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:56:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:03,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:56:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:03,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073619563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:56:03,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:56:03,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-30 20:56:03,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868013016] [2023-08-30 20:56:03,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:56:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 20:56:03,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:56:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 20:56:03,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-08-30 20:56:04,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-08-30 20:56:04,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 528 transitions, 7419 flow. Second operand has 20 states, 20 states have (on average 106.2) internal successors, (2124), 20 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:04,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:56:04,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-08-30 20:56:04,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:56:05,368 INFO L130 PetriNetUnfolder]: 3040/4448 cut-off events. [2023-08-30 20:56:05,368 INFO L131 PetriNetUnfolder]: For 50840/50840 co-relation queries the response was YES. [2023-08-30 20:56:05,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36028 conditions, 4448 events. 3040/4448 cut-off events. For 50840/50840 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 21202 event pairs, 248 based on Foata normal form. 28/4476 useless extension candidates. Maximal degree in co-relation 35960. Up to 1823 conditions per place. [2023-08-30 20:56:05,416 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 452 selfloop transitions, 292 changer transitions 0/744 dead transitions. [2023-08-30 20:56:05,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 744 transitions, 11435 flow [2023-08-30 20:56:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 20:56:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 20:56:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2449 transitions. [2023-08-30 20:56:05,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077589077589078 [2023-08-30 20:56:05,419 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2449 transitions. [2023-08-30 20:56:05,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2449 transitions. [2023-08-30 20:56:05,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:56:05,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2449 transitions. [2023-08-30 20:56:05,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 111.31818181818181) internal successors, (2449), 22 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:05,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:05,428 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:05,428 INFO L175 Difference]: Start difference. First operand has 212 places, 528 transitions, 7419 flow. Second operand 22 states and 2449 transitions. [2023-08-30 20:56:05,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 744 transitions, 11435 flow [2023-08-30 20:56:05,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 744 transitions, 11273 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 20:56:05,700 INFO L231 Difference]: Finished difference. Result has 226 places, 568 transitions, 8363 flow [2023-08-30 20:56:05,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=7257, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8363, PETRI_PLACES=226, PETRI_TRANSITIONS=568} [2023-08-30 20:56:05,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2023-08-30 20:56:05,701 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 568 transitions, 8363 flow [2023-08-30 20:56:05,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 106.2) internal successors, (2124), 20 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:05,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:56:05,702 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:56:05,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 20:56:05,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:05,902 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:56:05,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:56:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1332964359, now seen corresponding path program 17 times [2023-08-30 20:56:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:56:05,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96777254] [2023-08-30 20:56:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:56:05,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:56:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:56:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:06,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:56:06,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96777254] [2023-08-30 20:56:06,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96777254] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:56:06,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198454898] [2023-08-30 20:56:06,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 20:56:06,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:06,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:56:06,029 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:56:06,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 20:56:06,172 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:56:06,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:56:06,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 20:56:06,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:56:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:06,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:56:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:06,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198454898] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:56:06,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:56:06,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2023-08-30 20:56:06,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048851499] [2023-08-30 20:56:06,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:56:06,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 20:56:06,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:56:06,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 20:56:06,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-08-30 20:56:06,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-08-30 20:56:06,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 568 transitions, 8363 flow. Second operand has 19 states, 19 states have (on average 106.63157894736842) internal successors, (2026), 19 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:06,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:56:06,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-08-30 20:56:06,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:56:08,243 INFO L130 PetriNetUnfolder]: 3368/4936 cut-off events. [2023-08-30 20:56:08,243 INFO L131 PetriNetUnfolder]: For 60072/60072 co-relation queries the response was YES. [2023-08-30 20:56:08,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40849 conditions, 4936 events. 3368/4936 cut-off events. For 60072/60072 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 23995 event pairs, 292 based on Foata normal form. 28/4964 useless extension candidates. Maximal degree in co-relation 40781. Up to 2471 conditions per place. [2023-08-30 20:56:08,289 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 497 selfloop transitions, 308 changer transitions 0/805 dead transitions. [2023-08-30 20:56:08,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 805 transitions, 12960 flow [2023-08-30 20:56:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 20:56:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 20:56:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2775 transitions. [2023-08-30 20:56:08,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065934065934066 [2023-08-30 20:56:08,293 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2775 transitions. [2023-08-30 20:56:08,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2775 transitions. [2023-08-30 20:56:08,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:56:08,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2775 transitions. [2023-08-30 20:56:08,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 111.0) internal successors, (2775), 25 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:08,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 273.0) internal successors, (7098), 26 states have internal predecessors, (7098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:08,301 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 273.0) internal successors, (7098), 26 states have internal predecessors, (7098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:08,301 INFO L175 Difference]: Start difference. First operand has 226 places, 568 transitions, 8363 flow. Second operand 25 states and 2775 transitions. [2023-08-30 20:56:08,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 805 transitions, 12960 flow [2023-08-30 20:56:08,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 805 transitions, 12866 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-08-30 20:56:08,592 INFO L231 Difference]: Finished difference. Result has 253 places, 621 transitions, 9851 flow [2023-08-30 20:56:08,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=8271, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=9851, PETRI_PLACES=253, PETRI_TRANSITIONS=621} [2023-08-30 20:56:08,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2023-08-30 20:56:08,593 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 621 transitions, 9851 flow [2023-08-30 20:56:08,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.63157894736842) internal successors, (2026), 19 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:08,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:56:08,594 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:56:08,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 20:56:08,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 20:56:08,800 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:56:08,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:56:08,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1409097021, now seen corresponding path program 18 times [2023-08-30 20:56:08,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:56:08,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364379998] [2023-08-30 20:56:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:56:08,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:56:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:56:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:08,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:56:08,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364379998] [2023-08-30 20:56:08,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364379998] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:56:08,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479418987] [2023-08-30 20:56:08,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 20:56:08,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:08,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:56:08,929 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:56:08,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 20:56:09,092 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 20:56:09,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:56:09,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:56:09,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:56:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:09,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:56:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:09,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479418987] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:56:09,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:56:09,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-30 20:56:09,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629592258] [2023-08-30 20:56:09,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:56:09,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 20:56:09,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:56:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 20:56:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-08-30 20:56:09,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-08-30 20:56:09,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 621 transitions, 9851 flow. Second operand has 21 states, 21 states have (on average 110.04761904761905) internal successors, (2311), 21 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:09,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:56:09,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-08-30 20:56:09,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:56:10,794 INFO L130 PetriNetUnfolder]: 3252/4803 cut-off events. [2023-08-30 20:56:10,794 INFO L131 PetriNetUnfolder]: For 63788/63825 co-relation queries the response was YES. [2023-08-30 20:56:10,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41113 conditions, 4803 events. 3252/4803 cut-off events. For 63788/63825 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 23782 event pairs, 334 based on Foata normal form. 38/4829 useless extension candidates. Maximal degree in co-relation 41036. Up to 2017 conditions per place. [2023-08-30 20:56:10,845 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 450 selfloop transitions, 320 changer transitions 0/795 dead transitions. [2023-08-30 20:56:10,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 795 transitions, 13162 flow [2023-08-30 20:56:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 20:56:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 20:56:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1753 transitions. [2023-08-30 20:56:10,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42808302808302806 [2023-08-30 20:56:10,847 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1753 transitions. [2023-08-30 20:56:10,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1753 transitions. [2023-08-30 20:56:10,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:56:10,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1753 transitions. [2023-08-30 20:56:10,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.86666666666666) internal successors, (1753), 15 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:10,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 273.0) internal successors, (4368), 16 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:10,853 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 273.0) internal successors, (4368), 16 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:10,853 INFO L175 Difference]: Start difference. First operand has 253 places, 621 transitions, 9851 flow. Second operand 15 states and 1753 transitions. [2023-08-30 20:56:10,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 795 transitions, 13162 flow [2023-08-30 20:56:11,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 795 transitions, 12618 flow, removed 29 selfloop flow, removed 12 redundant places. [2023-08-30 20:56:11,198 INFO L231 Difference]: Finished difference. Result has 255 places, 628 transitions, 10094 flow [2023-08-30 20:56:11,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=9300, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10094, PETRI_PLACES=255, PETRI_TRANSITIONS=628} [2023-08-30 20:56:11,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2023-08-30 20:56:11,199 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 628 transitions, 10094 flow [2023-08-30 20:56:11,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 110.04761904761905) internal successors, (2311), 21 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:11,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:56:11,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:56:11,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 20:56:11,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 20:56:11,400 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:56:11,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:56:11,401 INFO L85 PathProgramCache]: Analyzing trace with hash -996717881, now seen corresponding path program 19 times [2023-08-30 20:56:11,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:56:11,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490993483] [2023-08-30 20:56:11,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:56:11,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:56:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:56:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:56:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490993483] [2023-08-30 20:56:11,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490993483] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:56:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249535110] [2023-08-30 20:56:11,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 20:56:11,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:11,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:56:11,501 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:56:11,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 20:56:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:56:11,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:56:11,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:56:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:11,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:56:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:56:11,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249535110] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:56:11,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:56:11,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-30 20:56:11,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240975683] [2023-08-30 20:56:11,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:56:11,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 20:56:11,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:56:11,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 20:56:11,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-30 20:56:11,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2023-08-30 20:56:11,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 628 transitions, 10094 flow. Second operand has 19 states, 19 states have (on average 110.05263157894737) internal successors, (2091), 19 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:11,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:56:11,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2023-08-30 20:56:11,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:56:12,895 INFO L130 PetriNetUnfolder]: 3214/4729 cut-off events. [2023-08-30 20:56:12,895 INFO L131 PetriNetUnfolder]: For 64022/64059 co-relation queries the response was YES. [2023-08-30 20:56:12,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40694 conditions, 4729 events. 3214/4729 cut-off events. For 64022/64059 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 23230 event pairs, 372 based on Foata normal form. 38/4755 useless extension candidates. Maximal degree in co-relation 40617. Up to 2034 conditions per place. [2023-08-30 20:56:12,943 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 420 selfloop transitions, 268 changer transitions 0/713 dead transitions. [2023-08-30 20:56:12,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 713 transitions, 12350 flow [2023-08-30 20:56:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 20:56:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 20:56:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1039 transitions. [2023-08-30 20:56:12,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228734228734229 [2023-08-30 20:56:12,945 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1039 transitions. [2023-08-30 20:56:12,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1039 transitions. [2023-08-30 20:56:12,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:56:12,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1039 transitions. [2023-08-30 20:56:12,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.44444444444444) internal successors, (1039), 9 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:12,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:12,948 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:12,948 INFO L175 Difference]: Start difference. First operand has 255 places, 628 transitions, 10094 flow. Second operand 9 states and 1039 transitions. [2023-08-30 20:56:12,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 713 transitions, 12350 flow [2023-08-30 20:56:13,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 713 transitions, 11700 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-08-30 20:56:13,241 INFO L231 Difference]: Finished difference. Result has 251 places, 631 transitions, 10283 flow [2023-08-30 20:56:13,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=9425, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10283, PETRI_PLACES=251, PETRI_TRANSITIONS=631} [2023-08-30 20:56:13,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2023-08-30 20:56:13,242 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 631 transitions, 10283 flow [2023-08-30 20:56:13,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 110.05263157894737) internal successors, (2091), 19 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:56:13,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:56:13,242 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:56:13,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 20:56:13,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:13,443 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:56:13,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:56:13,444 INFO L85 PathProgramCache]: Analyzing trace with hash -294499073, now seen corresponding path program 3 times [2023-08-30 20:56:13,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:56:13,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076081904] [2023-08-30 20:56:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:56:13,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:56:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:56:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:56:14,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:56:14,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076081904] [2023-08-30 20:56:14,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076081904] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:56:14,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612242908] [2023-08-30 20:56:14,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 20:56:14,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:56:14,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:56:14,320 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:56:14,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 20:56:14,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 20:56:14,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:56:14,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-30 20:56:14,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:56:15,662 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:56:15,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 89 [2023-08-30 20:56:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:56:16,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:56:17,715 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:56:17,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 387 treesize of output 623 [2023-08-30 20:56:41,214 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:56:50,589 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:57:23,206 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:57:53,435 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:58:24,372 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:58:41,852 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:59:12,036 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:59:40,243 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:00:09,826 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:00:47,456 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:02:48,636 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:03:50,553 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:04:32,609 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:04:54,297 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 21:05:48,267 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:06:16,649 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. Killed by 15