/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 22:27:34,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 22:27:34,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 22:27:34,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 22:27:34,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 22:27:34,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 22:27:34,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 22:27:34,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 22:27:34,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 22:27:34,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 22:27:34,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 22:27:34,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 22:27:34,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 22:27:34,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 22:27:34,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 22:27:34,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 22:27:34,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 22:27:34,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 22:27:34,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 22:27:34,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 22:27:34,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 22:27:34,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 22:27:34,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 22:27:34,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 22:27:34,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 22:27:34,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 22:27:34,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 22:27:34,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 22:27:34,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 22:27:34,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 22:27:34,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 22:27:34,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 22:27:34,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 22:27:34,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 22:27:34,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 22:27:34,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 22:27:34,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 22:27:34,180 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 22:27:34,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 22:27:34,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 22:27:34,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 22:27:34,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 22:27:34,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 22:27:34,183 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 22:27:34,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 22:27:34,183 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 22:27:34,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 22:27:34,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 22:27:34,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 22:27:34,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 22:27:34,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 22:27:34,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 22:27:34,185 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 22:27:34,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 22:27:34,185 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 22:27:34,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 22:27:34,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 22:27:34,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 22:27:34,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 22:27:34,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 22:27:34,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 22:27:34,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 22:27:34,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 22:27:34,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 22:27:34,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 22:27:34,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 22:27:34,187 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 22:27:34,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 22:27:34,187 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 22:27:34,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 22:27:34,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 22:27:34,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 22:27:34,393 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 22:27:34,394 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 22:27:34,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-01-27 22:27:35,510 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 22:27:35,695 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 22:27:35,695 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-01-27 22:27:35,701 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/794cc074d/e9c336fc46ce4b6da121c13b34b9036d/FLAG7c9fff33c [2023-01-27 22:27:35,711 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/794cc074d/e9c336fc46ce4b6da121c13b34b9036d [2023-01-27 22:27:35,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 22:27:35,713 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 22:27:35,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 22:27:35,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 22:27:35,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 22:27:35,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f88499e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35, skipping insertion in model container [2023-01-27 22:27:35,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 22:27:35,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 22:27:35,856 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-sum-array-hom.wvr.c[2396,2409] [2023-01-27 22:27:35,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 22:27:35,871 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 22:27:35,888 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-sum-array-hom.wvr.c[2396,2409] [2023-01-27 22:27:35,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 22:27:35,902 INFO L208 MainTranslator]: Completed translation [2023-01-27 22:27:35,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35 WrapperNode [2023-01-27 22:27:35,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 22:27:35,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 22:27:35,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 22:27:35,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 22:27:35,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,931 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2023-01-27 22:27:35,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 22:27:35,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 22:27:35,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 22:27:35,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 22:27:35,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 22:27:35,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 22:27:35,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 22:27:35,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 22:27:35,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (1/1) ... [2023-01-27 22:27:35,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 22:27:35,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:27:35,994 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) [2023-01-27 22:27:36,007 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 [2023-01-27 22:27:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 22:27:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 22:27:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 22:27:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 22:27:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 22:27:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 22:27:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 22:27:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 22:27:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 22:27:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 22:27:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 22:27:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 22:27:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 22:27:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 22:27:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 22:27:36,040 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 22:27:36,145 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 22:27:36,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 22:27:36,476 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 22:27:36,485 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 22:27:36,485 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 22:27:36,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:27:36 BoogieIcfgContainer [2023-01-27 22:27:36,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 22:27:36,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 22:27:36,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 22:27:36,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 22:27:36,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 10:27:35" (1/3) ... [2023-01-27 22:27:36,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d2ffa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:27:36, skipping insertion in model container [2023-01-27 22:27:36,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:35" (2/3) ... [2023-01-27 22:27:36,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d2ffa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:27:36, skipping insertion in model container [2023-01-27 22:27:36,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:27:36" (3/3) ... [2023-01-27 22:27:36,495 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2023-01-27 22:27:36,509 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 22:27:36,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 22:27:36,509 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 22:27:36,574 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 22:27:36,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 151 transitions, 326 flow [2023-01-27 22:27:36,660 INFO L130 PetriNetUnfolder]: 12/148 cut-off events. [2023-01-27 22:27:36,660 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:27:36,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 12/148 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 102 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2023-01-27 22:27:36,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 151 transitions, 326 flow [2023-01-27 22:27:36,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 138 transitions, 294 flow [2023-01-27 22:27:36,672 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 22:27:36,682 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 138 transitions, 294 flow [2023-01-27 22:27:36,684 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 138 transitions, 294 flow [2023-01-27 22:27:36,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 138 transitions, 294 flow [2023-01-27 22:27:36,737 INFO L130 PetriNetUnfolder]: 12/138 cut-off events. [2023-01-27 22:27:36,737 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:27:36,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 138 events. 12/138 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2023-01-27 22:27:36,739 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2023-01-27 22:27:40,934 INFO L134 LiptonReduction]: Checked pairs total: 1910 [2023-01-27 22:27:40,934 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-01-27 22:27:40,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 22:27:40,951 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=false, 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;@1f55833b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 22:27:40,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 22:27:40,956 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-01-27 22:27:40,957 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:27:40,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:40,957 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] [2023-01-27 22:27:40,958 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)] === [2023-01-27 22:27:40,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:40,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1930366028, now seen corresponding path program 1 times [2023-01-27 22:27:40,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:40,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754044116] [2023-01-27 22:27:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:40,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:27:41,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:41,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754044116] [2023-01-27 22:27:41,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754044116] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:27:41,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:27:41,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 22:27:41,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182508504] [2023-01-27 22:27:41,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:27:41,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 22:27:41,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 22:27:41,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 22:27:41,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 281 [2023-01-27 22:27:41,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:41,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:41,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 281 [2023-01-27 22:27:41,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:41,679 INFO L130 PetriNetUnfolder]: 360/508 cut-off events. [2023-01-27 22:27:41,679 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-01-27 22:27:41,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 508 events. 360/508 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1620 event pairs, 39 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2023-01-27 22:27:41,688 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 32 selfloop transitions, 4 changer transitions 1/40 dead transitions. [2023-01-27 22:27:41,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 40 transitions, 187 flow [2023-01-27 22:27:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 22:27:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 22:27:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-01-27 22:27:41,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041518386714117 [2023-01-27 22:27:41,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-01-27 22:27:41,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-01-27 22:27:41,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:41,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-01-27 22:27:41,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:41,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:41,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:41,723 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 425 transitions. [2023-01-27 22:27:41,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 40 transitions, 187 flow [2023-01-27 22:27:41,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 165 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 22:27:41,729 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 80 flow [2023-01-27 22:27:41,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-01-27 22:27:41,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-01-27 22:27:41,734 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 80 flow [2023-01-27 22:27:41,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:41,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:41,735 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] [2023-01-27 22:27:41,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 22:27:41,735 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)] === [2023-01-27 22:27:41,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:41,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1470342661, now seen corresponding path program 1 times [2023-01-27 22:27:41,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:41,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80249302] [2023-01-27 22:27:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:41,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:27:41,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:41,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80249302] [2023-01-27 22:27:41,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80249302] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:27:41,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:27:41,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 22:27:41,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129214505] [2023-01-27 22:27:41,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:27:41,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 22:27:41,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:41,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 22:27:41,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 22:27:41,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 281 [2023-01-27 22:27:41,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:41,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:41,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 281 [2023-01-27 22:27:41,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:42,044 INFO L130 PetriNetUnfolder]: 624/931 cut-off events. [2023-01-27 22:27:42,044 INFO L131 PetriNetUnfolder]: For 263/266 co-relation queries the response was YES. [2023-01-27 22:27:42,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2277 conditions, 931 events. 624/931 cut-off events. For 263/266 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3758 event pairs, 274 based on Foata normal form. 34/956 useless extension candidates. Maximal degree in co-relation 487. Up to 484 conditions per place. [2023-01-27 22:27:42,050 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 54 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-01-27 22:27:42,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 60 transitions, 292 flow [2023-01-27 22:27:42,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:27:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:27:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 617 transitions. [2023-01-27 22:27:42,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391459074733096 [2023-01-27 22:27:42,052 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 617 transitions. [2023-01-27 22:27:42,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 617 transitions. [2023-01-27 22:27:42,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:42,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 617 transitions. [2023-01-27 22:27:42,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,057 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,057 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 80 flow. Second operand 5 states and 617 transitions. [2023-01-27 22:27:42,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 60 transitions, 292 flow [2023-01-27 22:27:42,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 60 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 22:27:42,060 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 106 flow [2023-01-27 22:27:42,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-01-27 22:27:42,061 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-01-27 22:27:42,061 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 106 flow [2023-01-27 22:27:42,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:42,062 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] [2023-01-27 22:27:42,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 22:27:42,062 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)] === [2023-01-27 22:27:42,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1089877853, now seen corresponding path program 1 times [2023-01-27 22:27:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61040052] [2023-01-27 22:27:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:42,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:27:42,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:42,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61040052] [2023-01-27 22:27:42,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61040052] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:27:42,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:27:42,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 22:27:42,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513919526] [2023-01-27 22:27:42,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:27:42,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 22:27:42,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:42,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 22:27:42,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 22:27:42,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 281 [2023-01-27 22:27:42,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:42,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 281 [2023-01-27 22:27:42,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:42,318 INFO L130 PetriNetUnfolder]: 567/867 cut-off events. [2023-01-27 22:27:42,318 INFO L131 PetriNetUnfolder]: For 372/408 co-relation queries the response was YES. [2023-01-27 22:27:42,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 867 events. 567/867 cut-off events. For 372/408 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3531 event pairs, 260 based on Foata normal form. 70/935 useless extension candidates. Maximal degree in co-relation 1398. Up to 568 conditions per place. [2023-01-27 22:27:42,323 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 53 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-01-27 22:27:42,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 59 transitions, 296 flow [2023-01-27 22:27:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:27:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:27:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 593 transitions. [2023-01-27 22:27:42,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4220640569395018 [2023-01-27 22:27:42,325 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 593 transitions. [2023-01-27 22:27:42,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 593 transitions. [2023-01-27 22:27:42,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:42,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 593 transitions. [2023-01-27 22:27:42,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2023-01-27 22:27:42,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,330 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,330 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 106 flow. Second operand 5 states and 593 transitions. [2023-01-27 22:27:42,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 59 transitions, 296 flow [2023-01-27 22:27:42,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 59 transitions, 292 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 22:27:42,332 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 121 flow [2023-01-27 22:27:42,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-01-27 22:27:42,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2023-01-27 22:27:42,333 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 121 flow [2023-01-27 22:27:42,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:42,333 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] [2023-01-27 22:27:42,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 22:27:42,334 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)] === [2023-01-27 22:27:42,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:42,334 INFO L85 PathProgramCache]: Analyzing trace with hash -342971254, now seen corresponding path program 1 times [2023-01-27 22:27:42,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:42,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854270479] [2023-01-27 22:27:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:42,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:27:42,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:42,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854270479] [2023-01-27 22:27:42,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854270479] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:27:42,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:27:42,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 22:27:42,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186020397] [2023-01-27 22:27:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:27:42,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 22:27:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 22:27:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 22:27:42,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 281 [2023-01-27 22:27:42,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:42,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 281 [2023-01-27 22:27:42,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:42,581 INFO L130 PetriNetUnfolder]: 417/635 cut-off events. [2023-01-27 22:27:42,581 INFO L131 PetriNetUnfolder]: For 446/480 co-relation queries the response was YES. [2023-01-27 22:27:42,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 635 events. 417/635 cut-off events. For 446/480 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2524 event pairs, 138 based on Foata normal form. 48/671 useless extension candidates. Maximal degree in co-relation 1372. Up to 368 conditions per place. [2023-01-27 22:27:42,584 INFO L137 encePairwiseOnDemand]: 275/281 looper letters, 34 selfloop transitions, 3 changer transitions 25/64 dead transitions. [2023-01-27 22:27:42,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 333 flow [2023-01-27 22:27:42,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 22:27:42,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 22:27:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 710 transitions. [2023-01-27 22:27:42,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4211150652431791 [2023-01-27 22:27:42,587 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 710 transitions. [2023-01-27 22:27:42,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 710 transitions. [2023-01-27 22:27:42,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:42,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 710 transitions. [2023-01-27 22:27:42,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,592 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,592 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 121 flow. Second operand 6 states and 710 transitions. [2023-01-27 22:27:42,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 333 flow [2023-01-27 22:27:42,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 320 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 22:27:42,595 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 102 flow [2023-01-27 22:27:42,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2023-01-27 22:27:42,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2023-01-27 22:27:42,596 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 102 flow [2023-01-27 22:27:42,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:42,597 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] [2023-01-27 22:27:42,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 22:27:42,597 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)] === [2023-01-27 22:27:42,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash 569730806, now seen corresponding path program 1 times [2023-01-27 22:27:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:42,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700858810] [2023-01-27 22:27:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:42,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:42,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:42,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700858810] [2023-01-27 22:27:42,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700858810] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:42,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261771849] [2023-01-27 22:27:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:42,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:42,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:27:42,697 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) [2023-01-27 22:27:42,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 22:27:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:42,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:27:42,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:27:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:42,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:27:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:42,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261771849] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:42,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 22:27:42,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-01-27 22:27:42,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063555341] [2023-01-27 22:27:42,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:27:42,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 22:27:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 22:27:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-01-27 22:27:42,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:27:42,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:42,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:42,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:27:42,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:43,170 INFO L130 PetriNetUnfolder]: 544/799 cut-off events. [2023-01-27 22:27:43,170 INFO L131 PetriNetUnfolder]: For 468/468 co-relation queries the response was YES. [2023-01-27 22:27:43,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2146 conditions, 799 events. 544/799 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3028 event pairs, 139 based on Foata normal form. 16/814 useless extension candidates. Maximal degree in co-relation 2121. Up to 410 conditions per place. [2023-01-27 22:27:43,176 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 58 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-01-27 22:27:43,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 68 transitions, 372 flow [2023-01-27 22:27:43,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:27:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:27:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 794 transitions. [2023-01-27 22:27:43,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036603965429588 [2023-01-27 22:27:43,178 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 794 transitions. [2023-01-27 22:27:43,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 794 transitions. [2023-01-27 22:27:43,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:43,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 794 transitions. [2023-01-27 22:27:43,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:43,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:43,183 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:43,183 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 102 flow. Second operand 7 states and 794 transitions. [2023-01-27 22:27:43,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 68 transitions, 372 flow [2023-01-27 22:27:43,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 68 transitions, 337 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-01-27 22:27:43,187 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 142 flow [2023-01-27 22:27:43,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-01-27 22:27:43,188 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2023-01-27 22:27:43,188 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 142 flow [2023-01-27 22:27:43,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:43,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:43,188 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] [2023-01-27 22:27:43,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 22:27:43,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:43,397 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)] === [2023-01-27 22:27:43,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:43,398 INFO L85 PathProgramCache]: Analyzing trace with hash 379073552, now seen corresponding path program 2 times [2023-01-27 22:27:43,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:43,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563741322] [2023-01-27 22:27:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:43,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:43,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:43,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563741322] [2023-01-27 22:27:43,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563741322] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:43,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286311393] [2023-01-27 22:27:43,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:27:43,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:43,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:27:43,534 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) [2023-01-27 22:27:43,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 22:27:43,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:27:43,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:27:43,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:27:43,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:27:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:43,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:27:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:43,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286311393] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:43,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 22:27:43,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-01-27 22:27:43,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303825745] [2023-01-27 22:27:43,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:27:43,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 22:27:43,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:43,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 22:27:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-01-27 22:27:43,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:27:43,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:43,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:43,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:27:43,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:43,943 INFO L130 PetriNetUnfolder]: 736/1083 cut-off events. [2023-01-27 22:27:43,943 INFO L131 PetriNetUnfolder]: For 1058/1058 co-relation queries the response was YES. [2023-01-27 22:27:43,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3402 conditions, 1083 events. 736/1083 cut-off events. For 1058/1058 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4405 event pairs, 221 based on Foata normal form. 12/1092 useless extension candidates. Maximal degree in co-relation 3380. Up to 648 conditions per place. [2023-01-27 22:27:43,950 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 60 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2023-01-27 22:27:43,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 449 flow [2023-01-27 22:27:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:27:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:27:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 790 transitions. [2023-01-27 22:27:43,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4016268429079817 [2023-01-27 22:27:43,954 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 790 transitions. [2023-01-27 22:27:43,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 790 transitions. [2023-01-27 22:27:43,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:43,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 790 transitions. [2023-01-27 22:27:43,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.85714285714286) internal successors, (790), 7 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:43,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:43,958 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:43,959 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 142 flow. Second operand 7 states and 790 transitions. [2023-01-27 22:27:43,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 449 flow [2023-01-27 22:27:43,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 73 transitions, 414 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-01-27 22:27:43,962 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 200 flow [2023-01-27 22:27:43,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-01-27 22:27:43,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-01-27 22:27:43,965 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 200 flow [2023-01-27 22:27:43,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:43,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:43,967 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] [2023-01-27 22:27:43,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 22:27:44,173 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,SelfDestructingSolverStorable5 [2023-01-27 22:27:44,173 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)] === [2023-01-27 22:27:44,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1858799492, now seen corresponding path program 3 times [2023-01-27 22:27:44,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:44,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40587043] [2023-01-27 22:27:44,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:44,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:44,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:44,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40587043] [2023-01-27 22:27:44,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40587043] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:44,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391599040] [2023-01-27 22:27:44,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:27:44,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:44,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:27:44,287 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) [2023-01-27 22:27:44,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 22:27:44,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:27:44,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:27:44,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:27:44,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:27:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:44,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:27:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:44,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391599040] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:44,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 22:27:44,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2023-01-27 22:27:44,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740070479] [2023-01-27 22:27:44,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:27:44,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 22:27:44,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:44,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 22:27:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-01-27 22:27:44,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:27:44,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:44,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:44,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:27:44,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:44,756 INFO L130 PetriNetUnfolder]: 840/1246 cut-off events. [2023-01-27 22:27:44,757 INFO L131 PetriNetUnfolder]: For 2256/2256 co-relation queries the response was YES. [2023-01-27 22:27:44,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 1246 events. 840/1246 cut-off events. For 2256/2256 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5295 event pairs, 211 based on Foata normal form. 16/1259 useless extension candidates. Maximal degree in co-relation 4469. Up to 612 conditions per place. [2023-01-27 22:27:44,765 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 62 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2023-01-27 22:27:44,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 82 transitions, 561 flow [2023-01-27 22:27:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:27:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:27:44,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 797 transitions. [2023-01-27 22:27:44,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051855617691917 [2023-01-27 22:27:44,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 797 transitions. [2023-01-27 22:27:44,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 797 transitions. [2023-01-27 22:27:44,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:44,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 797 transitions. [2023-01-27 22:27:44,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:44,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:44,773 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:44,773 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 200 flow. Second operand 7 states and 797 transitions. [2023-01-27 22:27:44,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 82 transitions, 561 flow [2023-01-27 22:27:44,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 82 transitions, 520 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-01-27 22:27:44,779 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 310 flow [2023-01-27 22:27:44,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-01-27 22:27:44,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-01-27 22:27:44,779 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 310 flow [2023-01-27 22:27:44,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:44,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:44,780 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] [2023-01-27 22:27:44,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 22:27:44,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:44,985 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)] === [2023-01-27 22:27:44,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash 259393698, now seen corresponding path program 4 times [2023-01-27 22:27:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:44,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038801439] [2023-01-27 22:27:44,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:44,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:45,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:45,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038801439] [2023-01-27 22:27:45,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038801439] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:45,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130840227] [2023-01-27 22:27:45,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:27:45,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:45,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:27:45,108 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) [2023-01-27 22:27:45,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 22:27:45,174 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:27:45,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:27:45,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 22:27:45,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:27:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:45,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:27:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:45,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130840227] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:27:45,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:27:45,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-01-27 22:27:45,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307166798] [2023-01-27 22:27:45,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:27:45,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 22:27:45,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 22:27:45,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-27 22:27:45,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 281 [2023-01-27 22:27:45,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 310 flow. Second operand has 13 states, 13 states have (on average 104.15384615384616) internal successors, (1354), 13 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:45,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:45,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 281 [2023-01-27 22:27:45,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:45,632 INFO L130 PetriNetUnfolder]: 869/1312 cut-off events. [2023-01-27 22:27:45,632 INFO L131 PetriNetUnfolder]: For 3825/3825 co-relation queries the response was YES. [2023-01-27 22:27:45,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5202 conditions, 1312 events. 869/1312 cut-off events. For 3825/3825 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5376 event pairs, 30 based on Foata normal form. 18/1329 useless extension candidates. Maximal degree in co-relation 5174. Up to 590 conditions per place. [2023-01-27 22:27:45,641 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 80 selfloop transitions, 43 changer transitions 0/123 dead transitions. [2023-01-27 22:27:45,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 123 transitions, 1016 flow [2023-01-27 22:27:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 22:27:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 22:27:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1198 transitions. [2023-01-27 22:27:45,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875768359754125 [2023-01-27 22:27:45,644 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1198 transitions. [2023-01-27 22:27:45,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1198 transitions. [2023-01-27 22:27:45,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:45,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1198 transitions. [2023-01-27 22:27:45,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.9090909090909) internal successors, (1198), 11 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:45,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:45,651 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:45,652 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 310 flow. Second operand 11 states and 1198 transitions. [2023-01-27 22:27:45,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 123 transitions, 1016 flow [2023-01-27 22:27:45,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 123 transitions, 977 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-01-27 22:27:45,661 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 673 flow [2023-01-27 22:27:45,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=673, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2023-01-27 22:27:45,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2023-01-27 22:27:45,662 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 673 flow [2023-01-27 22:27:45,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.15384615384616) internal successors, (1354), 13 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:45,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:45,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:27:45,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 22:27:45,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:45,869 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)] === [2023-01-27 22:27:45,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:45,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1895829148, now seen corresponding path program 5 times [2023-01-27 22:27:45,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:45,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497951831] [2023-01-27 22:27:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:45,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:45,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:45,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497951831] [2023-01-27 22:27:45,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497951831] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:45,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683665136] [2023-01-27 22:27:45,994 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:27:45,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:45,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:27:45,995 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) [2023-01-27 22:27:45,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 22:27:46,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:27:46,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:27:46,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 22:27:46,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:27:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:46,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:27:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:46,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683665136] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:27:46,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:27:46,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-01-27 22:27:46,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564061457] [2023-01-27 22:27:46,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:27:46,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 22:27:46,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:46,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 22:27:46,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-01-27 22:27:46,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 281 [2023-01-27 22:27:46,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 673 flow. Second operand has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:46,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:46,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 281 [2023-01-27 22:27:46,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:46,670 INFO L130 PetriNetUnfolder]: 1230/1853 cut-off events. [2023-01-27 22:27:46,670 INFO L131 PetriNetUnfolder]: For 8979/8979 co-relation queries the response was YES. [2023-01-27 22:27:46,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8613 conditions, 1853 events. 1230/1853 cut-off events. For 8979/8979 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8092 event pairs, 194 based on Foata normal form. 26/1878 useless extension candidates. Maximal degree in co-relation 8579. Up to 713 conditions per place. [2023-01-27 22:27:46,685 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 102 selfloop transitions, 60 changer transitions 0/162 dead transitions. [2023-01-27 22:27:46,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 162 transitions, 1547 flow [2023-01-27 22:27:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 22:27:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 22:27:46,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1106 transitions. [2023-01-27 22:27:46,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39359430604982204 [2023-01-27 22:27:46,688 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1106 transitions. [2023-01-27 22:27:46,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1106 transitions. [2023-01-27 22:27:46,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:46,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1106 transitions. [2023-01-27 22:27:46,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 110.6) internal successors, (1106), 10 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:46,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 281.0) internal successors, (3091), 11 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:46,695 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 281.0) internal successors, (3091), 11 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:46,695 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 673 flow. Second operand 10 states and 1106 transitions. [2023-01-27 22:27:46,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 162 transitions, 1547 flow [2023-01-27 22:27:46,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 162 transitions, 1498 flow, removed 23 selfloop flow, removed 2 redundant places. [2023-01-27 22:27:46,732 INFO L231 Difference]: Finished difference. Result has 75 places, 100 transitions, 1119 flow [2023-01-27 22:27:46,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1119, PETRI_PLACES=75, PETRI_TRANSITIONS=100} [2023-01-27 22:27:46,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2023-01-27 22:27:46,733 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 100 transitions, 1119 flow [2023-01-27 22:27:46,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:46,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:46,734 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] [2023-01-27 22:27:46,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 22:27:46,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:46,940 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)] === [2023-01-27 22:27:46,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:46,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1041658654, now seen corresponding path program 6 times [2023-01-27 22:27:46,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:46,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992496102] [2023-01-27 22:27:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:46,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:47,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992496102] [2023-01-27 22:27:47,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992496102] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576757363] [2023-01-27 22:27:47,050 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:27:47,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:27:47,051 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) [2023-01-27 22:27:47,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 22:27:47,146 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:27:47,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:27:47,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:27:47,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:27:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:47,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:27:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:47,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576757363] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:47,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 22:27:47,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2023-01-27 22:27:47,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712857174] [2023-01-27 22:27:47,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:27:47,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 22:27:47,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:47,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 22:27:47,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-01-27 22:27:47,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:27:47,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 100 transitions, 1119 flow. Second operand has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:47,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:47,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:27:47,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:47,640 INFO L130 PetriNetUnfolder]: 1158/1728 cut-off events. [2023-01-27 22:27:47,641 INFO L131 PetriNetUnfolder]: For 12555/12594 co-relation queries the response was YES. [2023-01-27 22:27:47,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9329 conditions, 1728 events. 1158/1728 cut-off events. For 12555/12594 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7471 event pairs, 261 based on Foata normal form. 42/1762 useless extension candidates. Maximal degree in co-relation 9289. Up to 918 conditions per place. [2023-01-27 22:27:47,658 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 72 selfloop transitions, 55 changer transitions 0/134 dead transitions. [2023-01-27 22:27:47,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 134 transitions, 1571 flow [2023-01-27 22:27:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:27:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:27:47,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 791 transitions. [2023-01-27 22:27:47,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40213523131672596 [2023-01-27 22:27:47,661 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 791 transitions. [2023-01-27 22:27:47,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 791 transitions. [2023-01-27 22:27:47,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:47,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 791 transitions. [2023-01-27 22:27:47,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:47,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:47,667 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:47,667 INFO L175 Difference]: Start difference. First operand has 75 places, 100 transitions, 1119 flow. Second operand 7 states and 791 transitions. [2023-01-27 22:27:47,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 134 transitions, 1571 flow [2023-01-27 22:27:47,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 134 transitions, 1511 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-01-27 22:27:47,690 INFO L231 Difference]: Finished difference. Result has 80 places, 106 transitions, 1296 flow [2023-01-27 22:27:47,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1296, PETRI_PLACES=80, PETRI_TRANSITIONS=106} [2023-01-27 22:27:47,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2023-01-27 22:27:47,691 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 106 transitions, 1296 flow [2023-01-27 22:27:47,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:47,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:47,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:27:47,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 22:27:47,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:47,898 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)] === [2023-01-27 22:27:47,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 559981522, now seen corresponding path program 1 times [2023-01-27 22:27:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:47,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726126062] [2023-01-27 22:27:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:47,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:47,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:47,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726126062] [2023-01-27 22:27:47,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726126062] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:47,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64651939] [2023-01-27 22:27:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:47,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:47,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:27:47,990 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) [2023-01-27 22:27:48,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 22:27:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:48,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 22:27:48,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:27:48,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:48,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:27:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:27:48,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64651939] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:48,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 22:27:48,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-27 22:27:48,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404093364] [2023-01-27 22:27:48,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:27:48,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 22:27:48,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:48,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 22:27:48,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-27 22:27:48,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 281 [2023-01-27 22:27:48,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 106 transitions, 1296 flow. Second operand has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:48,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:48,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 281 [2023-01-27 22:27:48,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:48,342 INFO L130 PetriNetUnfolder]: 960/1418 cut-off events. [2023-01-27 22:27:48,343 INFO L131 PetriNetUnfolder]: For 11945/12158 co-relation queries the response was YES. [2023-01-27 22:27:48,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 1418 events. 960/1418 cut-off events. For 11945/12158 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6191 event pairs, 280 based on Foata normal form. 218/1558 useless extension candidates. Maximal degree in co-relation 7808. Up to 1101 conditions per place. [2023-01-27 22:27:48,362 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 105 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2023-01-27 22:27:48,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 1751 flow [2023-01-27 22:27:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:27:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:27:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 599 transitions. [2023-01-27 22:27:48,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42633451957295376 [2023-01-27 22:27:48,364 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 599 transitions. [2023-01-27 22:27:48,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 599 transitions. [2023-01-27 22:27:48,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:48,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 599 transitions. [2023-01-27 22:27:48,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:48,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:48,368 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:48,369 INFO L175 Difference]: Start difference. First operand has 80 places, 106 transitions, 1296 flow. Second operand 5 states and 599 transitions. [2023-01-27 22:27:48,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 1751 flow [2023-01-27 22:27:48,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 129 transitions, 1624 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-01-27 22:27:48,392 INFO L231 Difference]: Finished difference. Result has 81 places, 107 transitions, 1226 flow [2023-01-27 22:27:48,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1226, PETRI_PLACES=81, PETRI_TRANSITIONS=107} [2023-01-27 22:27:48,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2023-01-27 22:27:48,393 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 107 transitions, 1226 flow [2023-01-27 22:27:48,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:48,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:48,394 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] [2023-01-27 22:27:48,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 22:27:48,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:48,605 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)] === [2023-01-27 22:27:48,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:48,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1412736136, now seen corresponding path program 1 times [2023-01-27 22:27:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:48,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932939416] [2023-01-27 22:27:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:48,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:27:49,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:27:49,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932939416] [2023-01-27 22:27:49,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932939416] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:27:49,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691902784] [2023-01-27 22:27:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:49,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:27:49,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:27:49,592 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) [2023-01-27 22:27:49,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 22:27:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:27:49,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-27 22:27:49,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:27:49,808 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 [2023-01-27 22:27:49,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:27:50,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:27:50,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 22:27:50,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:27:50,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 22:27:50,293 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:27:50,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:27:50,295 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 17 treesize of output 10 [2023-01-27 22:27:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:27:50,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:27:51,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:27:51,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 49 [2023-01-27 22:27:51,199 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:27:51,199 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 990 treesize of output 902 [2023-01-27 22:27:51,224 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 216 treesize of output 192 [2023-01-27 22:27:51,233 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 192 treesize of output 180 [2023-01-27 22:27:51,249 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:27:51,249 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 96 treesize of output 91 [2023-01-27 22:27:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:27:52,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691902784] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:27:52,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:27:52,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-01-27 22:27:52,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190864282] [2023-01-27 22:27:52,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:27:52,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-27 22:27:52,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:27:52,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-27 22:27:52,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=685, Unknown=9, NotChecked=0, Total=812 [2023-01-27 22:27:52,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 281 [2023-01-27 22:27:52,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 107 transitions, 1226 flow. Second operand has 29 states, 29 states have (on average 77.27586206896552) internal successors, (2241), 29 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:52,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:27:52,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 281 [2023-01-27 22:27:52,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:27:55,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:27:58,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:27:59,135 INFO L130 PetriNetUnfolder]: 2229/3359 cut-off events. [2023-01-27 22:27:59,135 INFO L131 PetriNetUnfolder]: For 22197/22435 co-relation queries the response was YES. [2023-01-27 22:27:59,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18348 conditions, 3359 events. 2229/3359 cut-off events. For 22197/22435 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 16860 event pairs, 105 based on Foata normal form. 201/3555 useless extension candidates. Maximal degree in co-relation 17048. Up to 1743 conditions per place. [2023-01-27 22:27:59,169 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 194 selfloop transitions, 178 changer transitions 7/384 dead transitions. [2023-01-27 22:27:59,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 384 transitions, 4696 flow [2023-01-27 22:27:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 22:27:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 22:27:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1517 transitions. [2023-01-27 22:27:59,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2999209173586398 [2023-01-27 22:27:59,175 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1517 transitions. [2023-01-27 22:27:59,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1517 transitions. [2023-01-27 22:27:59,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:27:59,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1517 transitions. [2023-01-27 22:27:59,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 84.27777777777777) internal successors, (1517), 18 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:59,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:59,194 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:59,194 INFO L175 Difference]: Start difference. First operand has 81 places, 107 transitions, 1226 flow. Second operand 18 states and 1517 transitions. [2023-01-27 22:27:59,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 384 transitions, 4696 flow [2023-01-27 22:27:59,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 384 transitions, 4650 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-01-27 22:27:59,236 INFO L231 Difference]: Finished difference. Result has 103 places, 252 transitions, 3537 flow [2023-01-27 22:27:59,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3537, PETRI_PLACES=103, PETRI_TRANSITIONS=252} [2023-01-27 22:27:59,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2023-01-27 22:27:59,238 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 252 transitions, 3537 flow [2023-01-27 22:27:59,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 77.27586206896552) internal successors, (2241), 29 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:27:59,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:27:59,239 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] [2023-01-27 22:27:59,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 22:27:59,445 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,SelfDestructingSolverStorable11 [2023-01-27 22:27:59,445 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)] === [2023-01-27 22:27:59,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:27:59,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2051396741, now seen corresponding path program 1 times [2023-01-27 22:27:59,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:27:59,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4355303] [2023-01-27 22:27:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:27:59,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:27:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:00,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:00,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4355303] [2023-01-27 22:28:00,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4355303] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:00,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237333424] [2023-01-27 22:28:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:00,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:00,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:00,113 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) [2023-01-27 22:28:00,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 22:28:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:00,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-27 22:28:00,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:00,269 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 [2023-01-27 22:28:00,316 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 [2023-01-27 22:28:00,351 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 [2023-01-27 22:28:00,394 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 [2023-01-27 22:28:00,495 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 22 treesize of output 10 [2023-01-27 22:28:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:00,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:00,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237333424] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:00,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:00,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 4] total 17 [2023-01-27 22:28:00,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801526333] [2023-01-27 22:28:00,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:00,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 22:28:00,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:00,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 22:28:00,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-01-27 22:28:00,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 281 [2023-01-27 22:28:00,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 252 transitions, 3537 flow. Second operand has 19 states, 19 states have (on average 89.6842105263158) internal successors, (1704), 19 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:00,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:00,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 281 [2023-01-27 22:28:00,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:01,652 INFO L130 PetriNetUnfolder]: 3387/5092 cut-off events. [2023-01-27 22:28:01,653 INFO L131 PetriNetUnfolder]: For 49372/49903 co-relation queries the response was YES. [2023-01-27 22:28:01,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31702 conditions, 5092 events. 3387/5092 cut-off events. For 49372/49903 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 27480 event pairs, 331 based on Foata normal form. 459/5463 useless extension candidates. Maximal degree in co-relation 31036. Up to 3467 conditions per place. [2023-01-27 22:28:01,691 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 210 selfloop transitions, 214 changer transitions 1/438 dead transitions. [2023-01-27 22:28:01,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 438 transitions, 6696 flow [2023-01-27 22:28:01,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:28:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:28:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 786 transitions. [2023-01-27 22:28:01,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349644128113879 [2023-01-27 22:28:01,694 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 786 transitions. [2023-01-27 22:28:01,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 786 transitions. [2023-01-27 22:28:01,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:01,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 786 transitions. [2023-01-27 22:28:01,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.25) internal successors, (786), 8 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:01,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:01,700 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:01,700 INFO L175 Difference]: Start difference. First operand has 103 places, 252 transitions, 3537 flow. Second operand 8 states and 786 transitions. [2023-01-27 22:28:01,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 438 transitions, 6696 flow [2023-01-27 22:28:01,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 438 transitions, 6321 flow, removed 151 selfloop flow, removed 2 redundant places. [2023-01-27 22:28:01,790 INFO L231 Difference]: Finished difference. Result has 112 places, 365 transitions, 5543 flow [2023-01-27 22:28:01,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=3291, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5543, PETRI_PLACES=112, PETRI_TRANSITIONS=365} [2023-01-27 22:28:01,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2023-01-27 22:28:01,791 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 365 transitions, 5543 flow [2023-01-27 22:28:01,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 89.6842105263158) internal successors, (1704), 19 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:01,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:01,792 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] [2023-01-27 22:28:01,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:01,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-27 22:28:01,997 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)] === [2023-01-27 22:28:01,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1764233959, now seen corresponding path program 2 times [2023-01-27 22:28:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:01,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967411835] [2023-01-27 22:28:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:01,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:02,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967411835] [2023-01-27 22:28:02,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967411835] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263724598] [2023-01-27 22:28:02,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:28:02,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:02,766 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) [2023-01-27 22:28:02,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 22:28:02,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:28:02,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:02,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 22:28:02,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:03,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:03,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 22:28:03,089 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 22 treesize of output 10 [2023-01-27 22:28:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:03,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:03,225 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_531 (Array Int Int))) (= (mod c_~sum1~0 4294967296) (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_531) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296))) is different from false [2023-01-27 22:28:03,238 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:03,238 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 56 treesize of output 44 [2023-01-27 22:28:03,242 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 18 treesize of output 16 [2023-01-27 22:28:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-01-27 22:28:03,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263724598] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:03,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:03,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-01-27 22:28:03,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180306594] [2023-01-27 22:28:03,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:03,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 22:28:03,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:03,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 22:28:03,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=365, Unknown=1, NotChecked=40, Total=506 [2023-01-27 22:28:03,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 281 [2023-01-27 22:28:03,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 365 transitions, 5543 flow. Second operand has 23 states, 23 states have (on average 89.78260869565217) internal successors, (2065), 23 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:03,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:03,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 281 [2023-01-27 22:28:03,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:04,566 INFO L130 PetriNetUnfolder]: 4160/6267 cut-off events. [2023-01-27 22:28:04,566 INFO L131 PetriNetUnfolder]: For 70937/71692 co-relation queries the response was YES. [2023-01-27 22:28:04,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41545 conditions, 6267 events. 4160/6267 cut-off events. For 70937/71692 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 35502 event pairs, 456 based on Foata normal form. 627/6735 useless extension candidates. Maximal degree in co-relation 40916. Up to 3769 conditions per place. [2023-01-27 22:28:04,620 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 212 selfloop transitions, 294 changer transitions 1/520 dead transitions. [2023-01-27 22:28:04,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 520 transitions, 8515 flow [2023-01-27 22:28:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:28:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:28:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 786 transitions. [2023-01-27 22:28:04,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349644128113879 [2023-01-27 22:28:04,623 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 786 transitions. [2023-01-27 22:28:04,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 786 transitions. [2023-01-27 22:28:04,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:04,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 786 transitions. [2023-01-27 22:28:04,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.25) internal successors, (786), 8 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:04,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:04,628 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:04,628 INFO L175 Difference]: Start difference. First operand has 112 places, 365 transitions, 5543 flow. Second operand 8 states and 786 transitions. [2023-01-27 22:28:04,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 520 transitions, 8515 flow [2023-01-27 22:28:04,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 520 transitions, 8417 flow, removed 48 selfloop flow, removed 1 redundant places. [2023-01-27 22:28:04,785 INFO L231 Difference]: Finished difference. Result has 121 places, 447 transitions, 7653 flow [2023-01-27 22:28:04,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=5445, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7653, PETRI_PLACES=121, PETRI_TRANSITIONS=447} [2023-01-27 22:28:04,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2023-01-27 22:28:04,785 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 447 transitions, 7653 flow [2023-01-27 22:28:04,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 89.78260869565217) internal successors, (2065), 23 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:04,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:04,786 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] [2023-01-27 22:28:04,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:04,992 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,SelfDestructingSolverStorable13 [2023-01-27 22:28:04,992 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)] === [2023-01-27 22:28:04,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:04,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1756959189, now seen corresponding path program 3 times [2023-01-27 22:28:04,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:04,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429641554] [2023-01-27 22:28:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:04,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:05,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429641554] [2023-01-27 22:28:05,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429641554] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120355462] [2023-01-27 22:28:05,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:28:05,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:05,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:05,390 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) [2023-01-27 22:28:05,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 22:28:05,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:28:05,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:05,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-27 22:28:05,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:05,591 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 22 treesize of output 10 [2023-01-27 22:28:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:05,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:05,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:05,698 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 28 treesize of output 21 [2023-01-27 22:28:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:05,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120355462] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:05,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:05,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2023-01-27 22:28:05,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532182383] [2023-01-27 22:28:05,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:05,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 22:28:05,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:05,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 22:28:05,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-01-27 22:28:05,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 281 [2023-01-27 22:28:05,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 447 transitions, 7653 flow. Second operand has 13 states, 13 states have (on average 106.15384615384616) internal successors, (1380), 13 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:05,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:05,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 281 [2023-01-27 22:28:05,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:06,769 INFO L130 PetriNetUnfolder]: 4486/6773 cut-off events. [2023-01-27 22:28:06,769 INFO L131 PetriNetUnfolder]: For 95926/96828 co-relation queries the response was YES. [2023-01-27 22:28:06,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49006 conditions, 6773 events. 4486/6773 cut-off events. For 95926/96828 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 39021 event pairs, 835 based on Foata normal form. 758/7323 useless extension candidates. Maximal degree in co-relation 48359. Up to 5828 conditions per place. [2023-01-27 22:28:06,827 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 377 selfloop transitions, 164 changer transitions 1/555 dead transitions. [2023-01-27 22:28:06,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 555 transitions, 10117 flow [2023-01-27 22:28:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:28:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:28:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 795 transitions. [2023-01-27 22:28:06,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041687849517031 [2023-01-27 22:28:06,829 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 795 transitions. [2023-01-27 22:28:06,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 795 transitions. [2023-01-27 22:28:06,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:06,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 795 transitions. [2023-01-27 22:28:06,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.57142857142857) internal successors, (795), 7 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:06,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:06,834 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:06,834 INFO L175 Difference]: Start difference. First operand has 121 places, 447 transitions, 7653 flow. Second operand 7 states and 795 transitions. [2023-01-27 22:28:06,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 555 transitions, 10117 flow [2023-01-27 22:28:07,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 555 transitions, 9930 flow, removed 37 selfloop flow, removed 3 redundant places. [2023-01-27 22:28:07,111 INFO L231 Difference]: Finished difference. Result has 127 places, 498 transitions, 8883 flow [2023-01-27 22:28:07,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=7478, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8883, PETRI_PLACES=127, PETRI_TRANSITIONS=498} [2023-01-27 22:28:07,113 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2023-01-27 22:28:07,113 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 498 transitions, 8883 flow [2023-01-27 22:28:07,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.15384615384616) internal successors, (1380), 13 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:07,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:07,114 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] [2023-01-27 22:28:07,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:07,320 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,SelfDestructingSolverStorable14 [2023-01-27 22:28:07,320 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)] === [2023-01-27 22:28:07,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash -625249003, now seen corresponding path program 4 times [2023-01-27 22:28:07,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:07,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461083045] [2023-01-27 22:28:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:07,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:07,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461083045] [2023-01-27 22:28:07,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461083045] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:07,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640704435] [2023-01-27 22:28:07,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:28:07,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:07,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:08,000 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) [2023-01-27 22:28:08,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 22:28:08,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:28:08,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:08,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-27 22:28:08,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:08,234 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 15 treesize of output 7 [2023-01-27 22:28:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:08,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:08,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:08,334 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 28 treesize of output 21 [2023-01-27 22:28:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:08,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640704435] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:08,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:08,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 4] total 17 [2023-01-27 22:28:08,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360366852] [2023-01-27 22:28:08,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:08,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 22:28:08,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 22:28:08,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-01-27 22:28:08,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 281 [2023-01-27 22:28:08,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 498 transitions, 8883 flow. Second operand has 19 states, 19 states have (on average 90.05263157894737) internal successors, (1711), 19 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:08,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:08,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 281 [2023-01-27 22:28:08,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:09,603 INFO L130 PetriNetUnfolder]: 4613/6970 cut-off events. [2023-01-27 22:28:09,603 INFO L131 PetriNetUnfolder]: For 102793/103720 co-relation queries the response was YES. [2023-01-27 22:28:09,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51496 conditions, 6970 events. 4613/6970 cut-off events. For 102793/103720 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 40480 event pairs, 883 based on Foata normal form. 777/7528 useless extension candidates. Maximal degree in co-relation 50839. Up to 6393 conditions per place. [2023-01-27 22:28:09,654 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 427 selfloop transitions, 110 changer transitions 1/551 dead transitions. [2023-01-27 22:28:09,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 551 transitions, 10448 flow [2023-01-27 22:28:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:28:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:28:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 773 transitions. [2023-01-27 22:28:09,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34386120996441283 [2023-01-27 22:28:09,656 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 773 transitions. [2023-01-27 22:28:09,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 773 transitions. [2023-01-27 22:28:09,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:09,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 773 transitions. [2023-01-27 22:28:09,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.625) internal successors, (773), 8 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:09,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:09,661 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:09,662 INFO L175 Difference]: Start difference. First operand has 127 places, 498 transitions, 8883 flow. Second operand 8 states and 773 transitions. [2023-01-27 22:28:09,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 551 transitions, 10448 flow [2023-01-27 22:28:09,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 551 transitions, 10198 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-27 22:28:09,968 INFO L231 Difference]: Finished difference. Result has 133 places, 509 transitions, 9028 flow [2023-01-27 22:28:09,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=8633, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9028, PETRI_PLACES=133, PETRI_TRANSITIONS=509} [2023-01-27 22:28:09,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2023-01-27 22:28:09,969 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 509 transitions, 9028 flow [2023-01-27 22:28:09,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.05263157894737) internal successors, (1711), 19 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:09,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:09,970 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] [2023-01-27 22:28:09,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:10,175 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,SelfDestructingSolverStorable15 [2023-01-27 22:28:10,175 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)] === [2023-01-27 22:28:10,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:10,176 INFO L85 PathProgramCache]: Analyzing trace with hash 529415184, now seen corresponding path program 2 times [2023-01-27 22:28:10,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:10,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576981272] [2023-01-27 22:28:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:10,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:11,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576981272] [2023-01-27 22:28:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576981272] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489664287] [2023-01-27 22:28:11,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:28:11,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:11,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:11,137 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) [2023-01-27 22:28:11,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 22:28:11,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:28:11,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:11,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-27 22:28:11,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:11,578 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:28:11,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:11,580 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 17 treesize of output 10 [2023-01-27 22:28:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:11,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:11,754 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:11,754 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 28 treesize of output 21 [2023-01-27 22:28:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:12,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489664287] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:12,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:12,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-01-27 22:28:12,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858155760] [2023-01-27 22:28:12,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:12,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 22:28:12,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:12,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 22:28:12,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2023-01-27 22:28:12,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 281 [2023-01-27 22:28:12,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 509 transitions, 9028 flow. Second operand has 25 states, 25 states have (on average 77.4) internal successors, (1935), 25 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:12,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:12,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 281 [2023-01-27 22:28:12,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:14,091 INFO L130 PetriNetUnfolder]: 5174/7863 cut-off events. [2023-01-27 22:28:14,092 INFO L131 PetriNetUnfolder]: For 100439/100791 co-relation queries the response was YES. [2023-01-27 22:28:14,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56684 conditions, 7863 events. 5174/7863 cut-off events. For 100439/100791 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 46408 event pairs, 702 based on Foata normal form. 278/8095 useless extension candidates. Maximal degree in co-relation 56075. Up to 5903 conditions per place. [2023-01-27 22:28:14,150 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 387 selfloop transitions, 271 changer transitions 4/676 dead transitions. [2023-01-27 22:28:14,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 676 transitions, 12159 flow [2023-01-27 22:28:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 22:28:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 22:28:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1413 transitions. [2023-01-27 22:28:14,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29579233828762824 [2023-01-27 22:28:14,153 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1413 transitions. [2023-01-27 22:28:14,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1413 transitions. [2023-01-27 22:28:14,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:14,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1413 transitions. [2023-01-27 22:28:14,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.11764705882354) internal successors, (1413), 17 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:14,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:14,161 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:14,161 INFO L175 Difference]: Start difference. First operand has 133 places, 509 transitions, 9028 flow. Second operand 17 states and 1413 transitions. [2023-01-27 22:28:14,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 676 transitions, 12159 flow [2023-01-27 22:28:14,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 676 transitions, 11956 flow, removed 30 selfloop flow, removed 4 redundant places. [2023-01-27 22:28:14,498 INFO L231 Difference]: Finished difference. Result has 149 places, 592 transitions, 10825 flow [2023-01-27 22:28:14,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=8849, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10825, PETRI_PLACES=149, PETRI_TRANSITIONS=592} [2023-01-27 22:28:14,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2023-01-27 22:28:14,499 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 592 transitions, 10825 flow [2023-01-27 22:28:14,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 77.4) internal successors, (1935), 25 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:14,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:14,500 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] [2023-01-27 22:28:14,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:14,705 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,SelfDestructingSolverStorable16 [2023-01-27 22:28:14,706 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)] === [2023-01-27 22:28:14,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash 942256961, now seen corresponding path program 5 times [2023-01-27 22:28:14,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:14,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166012514] [2023-01-27 22:28:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:14,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:15,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:15,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166012514] [2023-01-27 22:28:15,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166012514] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:15,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388464019] [2023-01-27 22:28:15,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:28:15,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:15,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:15,210 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) [2023-01-27 22:28:15,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-27 22:28:15,308 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:28:15,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:15,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 22:28:15,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:15,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:15,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 22:28:15,627 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 22 treesize of output 10 [2023-01-27 22:28:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:15,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:15,725 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_708 (Array Int Int))) (= (mod c_~sum1~0 4294967296) (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_708) c_~A~0.base) (+ (* c_thread2Thread1of1ForFork0_~i~1 4) c_~A~0.offset)) c_~sum3~0 c_~sum2~0) 4294967296))) is different from false [2023-01-27 22:28:15,733 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:15,733 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 48 [2023-01-27 22:28:15,737 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 22 treesize of output 16 [2023-01-27 22:28:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:15,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388464019] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:15,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:15,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-01-27 22:28:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165765627] [2023-01-27 22:28:15,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 22:28:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 22:28:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=316, Unknown=1, NotChecked=38, Total=462 [2023-01-27 22:28:15,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 281 [2023-01-27 22:28:15,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 592 transitions, 10825 flow. Second operand has 22 states, 22 states have (on average 100.9090909090909) internal successors, (2220), 22 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:15,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:15,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 281 [2023-01-27 22:28:15,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:17,357 INFO L130 PetriNetUnfolder]: 5312/8019 cut-off events. [2023-01-27 22:28:17,358 INFO L131 PetriNetUnfolder]: For 129701/130755 co-relation queries the response was YES. [2023-01-27 22:28:17,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61434 conditions, 8019 events. 5312/8019 cut-off events. For 129701/130755 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 47488 event pairs, 1019 based on Foata normal form. 876/8709 useless extension candidates. Maximal degree in co-relation 60668. Up to 6770 conditions per place. [2023-01-27 22:28:17,408 INFO L137 encePairwiseOnDemand]: 274/281 looper letters, 432 selfloop transitions, 220 changer transitions 1/671 dead transitions. [2023-01-27 22:28:17,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 671 transitions, 13087 flow [2023-01-27 22:28:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:28:17,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:28:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 767 transitions. [2023-01-27 22:28:17,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38993390950686324 [2023-01-27 22:28:17,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 767 transitions. [2023-01-27 22:28:17,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 767 transitions. [2023-01-27 22:28:17,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:17,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 767 transitions. [2023-01-27 22:28:17,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:17,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:17,414 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:17,414 INFO L175 Difference]: Start difference. First operand has 149 places, 592 transitions, 10825 flow. Second operand 7 states and 767 transitions. [2023-01-27 22:28:17,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 671 transitions, 13087 flow [2023-01-27 22:28:17,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 671 transitions, 12884 flow, removed 85 selfloop flow, removed 4 redundant places. [2023-01-27 22:28:17,783 INFO L231 Difference]: Finished difference. Result has 153 places, 614 transitions, 11636 flow [2023-01-27 22:28:17,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=10624, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11636, PETRI_PLACES=153, PETRI_TRANSITIONS=614} [2023-01-27 22:28:17,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2023-01-27 22:28:17,784 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 614 transitions, 11636 flow [2023-01-27 22:28:17,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 100.9090909090909) internal successors, (2220), 22 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:17,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:17,784 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] [2023-01-27 22:28:17,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:17,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:17,985 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)] === [2023-01-27 22:28:17,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:17,985 INFO L85 PathProgramCache]: Analyzing trace with hash 41254953, now seen corresponding path program 6 times [2023-01-27 22:28:17,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:17,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709929123] [2023-01-27 22:28:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:17,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:18,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:18,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709929123] [2023-01-27 22:28:18,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709929123] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:18,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458740761] [2023-01-27 22:28:18,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:28:18,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:18,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:18,594 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) [2023-01-27 22:28:18,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-27 22:28:18,698 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:28:18,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:18,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 22:28:18,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:19,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:19,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 22:28:19,089 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 22 treesize of output 10 [2023-01-27 22:28:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:19,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:19,185 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_753 (Array Int Int))) (= (mod (+ c_~sum3~0 c_~sum2~0) 4294967296) (mod (+ c_~sum1~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_753) c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) 4294967296))) is different from false [2023-01-27 22:28:19,199 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:19,199 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 48 [2023-01-27 22:28:19,203 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 22 treesize of output 16 [2023-01-27 22:28:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-01-27 22:28:19,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458740761] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:19,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:19,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-01-27 22:28:19,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260022079] [2023-01-27 22:28:19,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:19,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 22:28:19,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:19,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 22:28:19,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=359, Unknown=1, NotChecked=40, Total=506 [2023-01-27 22:28:19,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 281 [2023-01-27 22:28:19,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 614 transitions, 11636 flow. Second operand has 23 states, 23 states have (on average 89.3913043478261) internal successors, (2056), 23 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:19,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:19,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 281 [2023-01-27 22:28:19,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:20,983 INFO L130 PetriNetUnfolder]: 5418/8189 cut-off events. [2023-01-27 22:28:20,983 INFO L131 PetriNetUnfolder]: For 137470/138483 co-relation queries the response was YES. [2023-01-27 22:28:21,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63711 conditions, 8189 events. 5418/8189 cut-off events. For 137470/138483 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 48660 event pairs, 1005 based on Foata normal form. 833/8798 useless extension candidates. Maximal degree in co-relation 62934. Up to 7453 conditions per place. [2023-01-27 22:28:21,035 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 506 selfloop transitions, 141 changer transitions 1/666 dead transitions. [2023-01-27 22:28:21,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 666 transitions, 13498 flow [2023-01-27 22:28:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:28:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:28:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 773 transitions. [2023-01-27 22:28:21,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34386120996441283 [2023-01-27 22:28:21,038 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 773 transitions. [2023-01-27 22:28:21,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 773 transitions. [2023-01-27 22:28:21,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:21,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 773 transitions. [2023-01-27 22:28:21,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.625) internal successors, (773), 8 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:21,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:21,040 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:21,040 INFO L175 Difference]: Start difference. First operand has 153 places, 614 transitions, 11636 flow. Second operand 8 states and 773 transitions. [2023-01-27 22:28:21,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 666 transitions, 13498 flow [2023-01-27 22:28:21,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 666 transitions, 13238 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-01-27 22:28:21,560 INFO L231 Difference]: Finished difference. Result has 159 places, 624 transitions, 11891 flow [2023-01-27 22:28:21,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=11376, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11891, PETRI_PLACES=159, PETRI_TRANSITIONS=624} [2023-01-27 22:28:21,561 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2023-01-27 22:28:21,561 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 624 transitions, 11891 flow [2023-01-27 22:28:21,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 89.3913043478261) internal successors, (2056), 23 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:21,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:21,562 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] [2023-01-27 22:28:21,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:21,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:21,762 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)] === [2023-01-27 22:28:21,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:21,763 INFO L85 PathProgramCache]: Analyzing trace with hash 769062817, now seen corresponding path program 7 times [2023-01-27 22:28:21,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:21,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80842778] [2023-01-27 22:28:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:21,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:22,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:22,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80842778] [2023-01-27 22:28:22,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80842778] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:22,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586876705] [2023-01-27 22:28:22,136 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:28:22,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:22,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:22,137 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) [2023-01-27 22:28:22,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-27 22:28:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:22,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-27 22:28:22,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:22,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 22:28:22,342 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 [2023-01-27 22:28:22,394 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 [2023-01-27 22:28:22,427 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 [2023-01-27 22:28:22,503 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 22 treesize of output 10 [2023-01-27 22:28:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:22,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:22,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586876705] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:22,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:22,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 4] total 15 [2023-01-27 22:28:22,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227836167] [2023-01-27 22:28:22,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:22,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 22:28:22,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 22:28:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-01-27 22:28:22,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 281 [2023-01-27 22:28:22,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 624 transitions, 11891 flow. Second operand has 17 states, 17 states have (on average 90.52941176470588) internal successors, (1539), 17 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:22,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:22,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 281 [2023-01-27 22:28:22,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:24,414 INFO L130 PetriNetUnfolder]: 5519/8355 cut-off events. [2023-01-27 22:28:24,414 INFO L131 PetriNetUnfolder]: For 141744/142762 co-relation queries the response was YES. [2023-01-27 22:28:24,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64935 conditions, 8355 events. 5519/8355 cut-off events. For 141744/142762 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 49843 event pairs, 1066 based on Foata normal form. 809/8939 useless extension candidates. Maximal degree in co-relation 64148. Up to 7376 conditions per place. [2023-01-27 22:28:24,472 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 503 selfloop transitions, 166 changer transitions 1/688 dead transitions. [2023-01-27 22:28:24,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 688 transitions, 13980 flow [2023-01-27 22:28:24,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:28:24,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:28:24,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 775 transitions. [2023-01-27 22:28:24,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3447508896797153 [2023-01-27 22:28:24,474 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 775 transitions. [2023-01-27 22:28:24,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 775 transitions. [2023-01-27 22:28:24,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:24,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 775 transitions. [2023-01-27 22:28:24,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.875) internal successors, (775), 8 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:24,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:24,479 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:24,480 INFO L175 Difference]: Start difference. First operand has 159 places, 624 transitions, 11891 flow. Second operand 8 states and 775 transitions. [2023-01-27 22:28:24,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 688 transitions, 13980 flow [2023-01-27 22:28:24,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 688 transitions, 13785 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-01-27 22:28:24,975 INFO L231 Difference]: Finished difference. Result has 166 places, 643 transitions, 12482 flow [2023-01-27 22:28:24,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=11707, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12482, PETRI_PLACES=166, PETRI_TRANSITIONS=643} [2023-01-27 22:28:24,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2023-01-27 22:28:24,976 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 643 transitions, 12482 flow [2023-01-27 22:28:24,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 90.52941176470588) internal successors, (1539), 17 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:24,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:24,976 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] [2023-01-27 22:28:24,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-01-27 22:28:25,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:25,182 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)] === [2023-01-27 22:28:25,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:25,182 INFO L85 PathProgramCache]: Analyzing trace with hash -469780055, now seen corresponding path program 8 times [2023-01-27 22:28:25,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:25,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617428911] [2023-01-27 22:28:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:25,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:25,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:25,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617428911] [2023-01-27 22:28:25,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617428911] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:25,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260650015] [2023-01-27 22:28:25,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:28:25,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:25,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:25,780 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) [2023-01-27 22:28:25,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-27 22:28:25,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:28:25,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:25,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-27 22:28:25,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:26,032 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 22 treesize of output 10 [2023-01-27 22:28:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:26,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:26,155 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:26,155 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 24 treesize of output 21 [2023-01-27 22:28:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:26,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260650015] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:26,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:26,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 15 [2023-01-27 22:28:26,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877853644] [2023-01-27 22:28:26,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:26,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 22:28:26,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:26,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 22:28:26,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-01-27 22:28:26,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 281 [2023-01-27 22:28:26,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 643 transitions, 12482 flow. Second operand has 17 states, 17 states have (on average 90.52941176470588) internal successors, (1539), 17 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:26,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:26,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 281 [2023-01-27 22:28:26,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:28,084 INFO L130 PetriNetUnfolder]: 5789/8755 cut-off events. [2023-01-27 22:28:28,084 INFO L131 PetriNetUnfolder]: For 155763/156823 co-relation queries the response was YES. [2023-01-27 22:28:28,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69128 conditions, 8755 events. 5789/8755 cut-off events. For 155763/156823 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 52547 event pairs, 1045 based on Foata normal form. 849/9377 useless extension candidates. Maximal degree in co-relation 68331. Up to 7936 conditions per place. [2023-01-27 22:28:28,245 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 535 selfloop transitions, 142 changer transitions 1/696 dead transitions. [2023-01-27 22:28:28,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 696 transitions, 14437 flow [2023-01-27 22:28:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:28:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:28:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 771 transitions. [2023-01-27 22:28:28,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3429715302491103 [2023-01-27 22:28:28,247 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 771 transitions. [2023-01-27 22:28:28,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 771 transitions. [2023-01-27 22:28:28,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:28,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 771 transitions. [2023-01-27 22:28:28,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.375) internal successors, (771), 8 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:28,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:28,250 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:28,250 INFO L175 Difference]: Start difference. First operand has 166 places, 643 transitions, 12482 flow. Second operand 8 states and 771 transitions. [2023-01-27 22:28:28,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 696 transitions, 14437 flow [2023-01-27 22:28:28,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 696 transitions, 14168 flow, removed 72 selfloop flow, removed 2 redundant places. [2023-01-27 22:28:28,747 INFO L231 Difference]: Finished difference. Result has 174 places, 666 transitions, 13005 flow [2023-01-27 22:28:28,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=12213, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13005, PETRI_PLACES=174, PETRI_TRANSITIONS=666} [2023-01-27 22:28:28,747 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2023-01-27 22:28:28,748 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 666 transitions, 13005 flow [2023-01-27 22:28:28,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 90.52941176470588) internal successors, (1539), 17 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:28,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:28,748 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] [2023-01-27 22:28:28,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-01-27 22:28:28,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:28,954 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)] === [2023-01-27 22:28:28,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:28,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1123850877, now seen corresponding path program 9 times [2023-01-27 22:28:28,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:28,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957193761] [2023-01-27 22:28:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:28,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:29,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:29,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957193761] [2023-01-27 22:28:29,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957193761] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:29,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795020128] [2023-01-27 22:28:29,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:28:29,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:29,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:29,266 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) [2023-01-27 22:28:29,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-27 22:28:29,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:28:29,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:29,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-27 22:28:29,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:29,478 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 22 treesize of output 10 [2023-01-27 22:28:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:29,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:29,619 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:29,619 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 28 treesize of output 21 [2023-01-27 22:28:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:29,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795020128] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:29,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:29,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2023-01-27 22:28:29,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956514265] [2023-01-27 22:28:29,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:29,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 22:28:29,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 22:28:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-01-27 22:28:29,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 281 [2023-01-27 22:28:29,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 666 transitions, 13005 flow. Second operand has 13 states, 13 states have (on average 106.07692307692308) internal successors, (1379), 13 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:29,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:29,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 281 [2023-01-27 22:28:29,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:31,327 INFO L130 PetriNetUnfolder]: 5862/8880 cut-off events. [2023-01-27 22:28:31,327 INFO L131 PetriNetUnfolder]: For 160835/161919 co-relation queries the response was YES. [2023-01-27 22:28:31,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70169 conditions, 8880 events. 5862/8880 cut-off events. For 160835/161919 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 53629 event pairs, 1186 based on Foata normal form. 861/9504 useless extension candidates. Maximal degree in co-relation 69361. Up to 8235 conditions per place. [2023-01-27 22:28:31,393 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 554 selfloop transitions, 135 changer transitions 1/708 dead transitions. [2023-01-27 22:28:31,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 708 transitions, 14851 flow [2023-01-27 22:28:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:28:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:28:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 787 transitions. [2023-01-27 22:28:31,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40010167768174887 [2023-01-27 22:28:31,395 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 787 transitions. [2023-01-27 22:28:31,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 787 transitions. [2023-01-27 22:28:31,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:31,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 787 transitions. [2023-01-27 22:28:31,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.42857142857143) internal successors, (787), 7 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:31,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:31,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:31,397 INFO L175 Difference]: Start difference. First operand has 174 places, 666 transitions, 13005 flow. Second operand 7 states and 787 transitions. [2023-01-27 22:28:31,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 708 transitions, 14851 flow [2023-01-27 22:28:32,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 708 transitions, 14519 flow, removed 106 selfloop flow, removed 3 redundant places. [2023-01-27 22:28:32,033 INFO L231 Difference]: Finished difference. Result has 179 places, 674 transitions, 13175 flow [2023-01-27 22:28:32,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=12695, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13175, PETRI_PLACES=179, PETRI_TRANSITIONS=674} [2023-01-27 22:28:32,034 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2023-01-27 22:28:32,034 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 674 transitions, 13175 flow [2023-01-27 22:28:32,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.07692307692308) internal successors, (1379), 13 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:32,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:32,034 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] [2023-01-27 22:28:32,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:32,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:32,235 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)] === [2023-01-27 22:28:32,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1167412120, now seen corresponding path program 3 times [2023-01-27 22:28:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:32,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786723054] [2023-01-27 22:28:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:33,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:33,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786723054] [2023-01-27 22:28:33,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786723054] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:33,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147625688] [2023-01-27 22:28:33,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:28:33,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:33,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:33,125 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) [2023-01-27 22:28:33,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-27 22:28:33,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 22:28:33,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:33,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-27 22:28:33,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:33,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:33,586 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 17 treesize of output 15 [2023-01-27 22:28:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:33,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:33,784 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:33,785 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 24 treesize of output 21 [2023-01-27 22:28:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:34,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147625688] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:34,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:34,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 28 [2023-01-27 22:28:34,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290203747] [2023-01-27 22:28:34,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:34,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 22:28:34,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:34,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 22:28:34,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-01-27 22:28:34,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 281 [2023-01-27 22:28:34,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 674 transitions, 13175 flow. Second operand has 30 states, 30 states have (on average 74.1) internal successors, (2223), 30 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:34,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:34,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 281 [2023-01-27 22:28:34,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:37,423 INFO L130 PetriNetUnfolder]: 6676/10150 cut-off events. [2023-01-27 22:28:37,423 INFO L131 PetriNetUnfolder]: For 161855/161855 co-relation queries the response was YES. [2023-01-27 22:28:37,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77817 conditions, 10150 events. 6676/10150 cut-off events. For 161855/161855 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 61046 event pairs, 1924 based on Foata normal form. 3/10152 useless extension candidates. Maximal degree in co-relation 76956. Up to 9237 conditions per place. [2023-01-27 22:28:37,494 INFO L137 encePairwiseOnDemand]: 268/281 looper letters, 623 selfloop transitions, 243 changer transitions 9/875 dead transitions. [2023-01-27 22:28:37,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 875 transitions, 17455 flow [2023-01-27 22:28:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-27 22:28:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-27 22:28:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2355 transitions. [2023-01-27 22:28:37,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2793594306049822 [2023-01-27 22:28:37,497 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2355 transitions. [2023-01-27 22:28:37,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2355 transitions. [2023-01-27 22:28:37,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:37,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2355 transitions. [2023-01-27 22:28:37,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 78.5) internal successors, (2355), 30 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:37,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 281.0) internal successors, (8711), 31 states have internal predecessors, (8711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:37,505 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 281.0) internal successors, (8711), 31 states have internal predecessors, (8711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:37,505 INFO L175 Difference]: Start difference. First operand has 179 places, 674 transitions, 13175 flow. Second operand 30 states and 2355 transitions. [2023-01-27 22:28:37,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 875 transitions, 17455 flow [2023-01-27 22:28:38,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 875 transitions, 17044 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-01-27 22:28:38,124 INFO L231 Difference]: Finished difference. Result has 216 places, 779 transitions, 15418 flow [2023-01-27 22:28:38,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=12833, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15418, PETRI_PLACES=216, PETRI_TRANSITIONS=779} [2023-01-27 22:28:38,125 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2023-01-27 22:28:38,125 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 779 transitions, 15418 flow [2023-01-27 22:28:38,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 74.1) internal successors, (2223), 30 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:38,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:38,125 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] [2023-01-27 22:28:38,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:38,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:38,329 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)] === [2023-01-27 22:28:38,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1020452630, now seen corresponding path program 4 times [2023-01-27 22:28:38,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:38,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572052519] [2023-01-27 22:28:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:39,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572052519] [2023-01-27 22:28:39,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572052519] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697591512] [2023-01-27 22:28:39,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:28:39,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:39,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:39,077 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) [2023-01-27 22:28:39,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-27 22:28:39,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:28:39,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:39,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 22:28:39,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:39,480 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:28:39,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:39,482 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 17 treesize of output 10 [2023-01-27 22:28:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:39,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:39,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:39,660 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 24 treesize of output 21 [2023-01-27 22:28:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:39,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697591512] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:39,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:39,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 7] total 27 [2023-01-27 22:28:39,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928903373] [2023-01-27 22:28:39,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:39,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-27 22:28:39,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:39,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-27 22:28:39,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2023-01-27 22:28:39,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 281 [2023-01-27 22:28:39,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 779 transitions, 15418 flow. Second operand has 29 states, 29 states have (on average 74.13793103448276) internal successors, (2150), 29 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:39,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:39,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 281 [2023-01-27 22:28:39,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:43,615 INFO L130 PetriNetUnfolder]: 8400/13069 cut-off events. [2023-01-27 22:28:43,615 INFO L131 PetriNetUnfolder]: For 226188/226188 co-relation queries the response was YES. [2023-01-27 22:28:43,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101177 conditions, 13069 events. 8400/13069 cut-off events. For 226188/226188 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 86402 event pairs, 1223 based on Foata normal form. 2/13071 useless extension candidates. Maximal degree in co-relation 100356. Up to 8150 conditions per place. [2023-01-27 22:28:43,716 INFO L137 encePairwiseOnDemand]: 265/281 looper letters, 618 selfloop transitions, 547 changer transitions 9/1174 dead transitions. [2023-01-27 22:28:43,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 1174 transitions, 24048 flow [2023-01-27 22:28:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 22:28:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 22:28:43,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1678 transitions. [2023-01-27 22:28:43,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28435858329096764 [2023-01-27 22:28:43,718 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1678 transitions. [2023-01-27 22:28:43,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1678 transitions. [2023-01-27 22:28:43,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:43,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1678 transitions. [2023-01-27 22:28:43,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 79.9047619047619) internal successors, (1678), 21 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:43,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 281.0) internal successors, (6182), 22 states have internal predecessors, (6182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:43,725 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 281.0) internal successors, (6182), 22 states have internal predecessors, (6182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:43,725 INFO L175 Difference]: Start difference. First operand has 216 places, 779 transitions, 15418 flow. Second operand 21 states and 1678 transitions. [2023-01-27 22:28:43,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 1174 transitions, 24048 flow [2023-01-27 22:28:44,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 1174 transitions, 23557 flow, removed 229 selfloop flow, removed 3 redundant places. [2023-01-27 22:28:44,736 INFO L231 Difference]: Finished difference. Result has 239 places, 1049 transitions, 21737 flow [2023-01-27 22:28:44,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=14997, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=21737, PETRI_PLACES=239, PETRI_TRANSITIONS=1049} [2023-01-27 22:28:44,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2023-01-27 22:28:44,737 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 1049 transitions, 21737 flow [2023-01-27 22:28:44,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 74.13793103448276) internal successors, (2150), 29 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:44,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:44,737 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] [2023-01-27 22:28:44,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:44,942 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,SelfDestructingSolverStorable23 [2023-01-27 22:28:44,943 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)] === [2023-01-27 22:28:44,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1307997402, now seen corresponding path program 5 times [2023-01-27 22:28:44,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:44,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352851070] [2023-01-27 22:28:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352851070] [2023-01-27 22:28:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352851070] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466248139] [2023-01-27 22:28:45,394 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:28:45,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:45,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:45,395 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) [2023-01-27 22:28:45,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-27 22:28:45,487 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:28:45,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:45,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-27 22:28:45,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:45,740 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 22 treesize of output 10 [2023-01-27 22:28:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:45,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:45,850 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:45,851 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 24 treesize of output 21 [2023-01-27 22:28:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:46,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466248139] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:46,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:46,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-01-27 22:28:46,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544362713] [2023-01-27 22:28:46,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:46,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 22:28:46,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:46,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 22:28:46,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-01-27 22:28:46,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 281 [2023-01-27 22:28:46,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 1049 transitions, 21737 flow. Second operand has 25 states, 25 states have (on average 84.76) internal successors, (2119), 25 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:46,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:46,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 281 [2023-01-27 22:28:46,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:51,831 INFO L130 PetriNetUnfolder]: 10061/15595 cut-off events. [2023-01-27 22:28:51,831 INFO L131 PetriNetUnfolder]: For 298089/298089 co-relation queries the response was YES. [2023-01-27 22:28:51,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127250 conditions, 15595 events. 10061/15595 cut-off events. For 298089/298089 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 104588 event pairs, 1510 based on Foata normal form. 12/15607 useless extension candidates. Maximal degree in co-relation 127038. Up to 10256 conditions per place. [2023-01-27 22:28:51,973 INFO L137 encePairwiseOnDemand]: 268/281 looper letters, 770 selfloop transitions, 704 changer transitions 14/1488 dead transitions. [2023-01-27 22:28:51,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1488 transitions, 30708 flow [2023-01-27 22:28:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-01-27 22:28:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-01-27 22:28:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 4318 transitions. [2023-01-27 22:28:51,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32013641755634636 [2023-01-27 22:28:51,979 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 4318 transitions. [2023-01-27 22:28:51,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 4318 transitions. [2023-01-27 22:28:51,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:51,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 4318 transitions. [2023-01-27 22:28:51,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 89.95833333333333) internal successors, (4318), 48 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:51,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 281.0) internal successors, (13769), 49 states have internal predecessors, (13769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:51,993 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 281.0) internal successors, (13769), 49 states have internal predecessors, (13769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:51,994 INFO L175 Difference]: Start difference. First operand has 239 places, 1049 transitions, 21737 flow. Second operand 48 states and 4318 transitions. [2023-01-27 22:28:51,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1488 transitions, 30708 flow [2023-01-27 22:28:53,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1488 transitions, 30010 flow, removed 145 selfloop flow, removed 10 redundant places. [2023-01-27 22:28:53,711 INFO L231 Difference]: Finished difference. Result has 288 places, 1288 transitions, 27667 flow [2023-01-27 22:28:53,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=21231, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=27667, PETRI_PLACES=288, PETRI_TRANSITIONS=1288} [2023-01-27 22:28:53,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2023-01-27 22:28:53,713 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 1288 transitions, 27667 flow [2023-01-27 22:28:53,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 84.76) internal successors, (2119), 25 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:53,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:53,713 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] [2023-01-27 22:28:53,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:53,918 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,SelfDestructingSolverStorable24 [2023-01-27 22:28:53,919 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:28:53,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:53,919 INFO L85 PathProgramCache]: Analyzing trace with hash -289991847, now seen corresponding path program 10 times [2023-01-27 22:28:53,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:53,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718604453] [2023-01-27 22:28:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:53,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:54,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:54,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718604453] [2023-01-27 22:28:54,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718604453] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:54,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339716013] [2023-01-27 22:28:54,463 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:28:54,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:54,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:54,464 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) [2023-01-27 22:28:54,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-27 22:28:54,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:28:54,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:54,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-27 22:28:54,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:54,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:54,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 22:28:54,746 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 15 treesize of output 7 [2023-01-27 22:28:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:28:54,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:54,863 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1067 (Array Int Int))) (= (mod (+ c_~sum3~0 c_~sum2~0) 4294967296) (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1067) c_~A~0.base) c_~A~0.offset) c_~sum1~0) 4294967296))) is different from false [2023-01-27 22:28:54,878 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:54,879 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 56 treesize of output 44 [2023-01-27 22:28:54,883 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 18 treesize of output 16 [2023-01-27 22:28:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-01-27 22:28:54,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339716013] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:54,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:54,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 23 [2023-01-27 22:28:54,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737014356] [2023-01-27 22:28:54,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:54,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 22:28:54,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:54,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 22:28:54,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=452, Unknown=2, NotChecked=44, Total=600 [2023-01-27 22:28:54,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 281 [2023-01-27 22:28:54,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1288 transitions, 27667 flow. Second operand has 25 states, 25 states have (on average 89.64) internal successors, (2241), 25 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:54,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:54,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 281 [2023-01-27 22:28:54,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:59,588 INFO L130 PetriNetUnfolder]: 9740/15006 cut-off events. [2023-01-27 22:28:59,588 INFO L131 PetriNetUnfolder]: For 366128/367935 co-relation queries the response was YES. [2023-01-27 22:28:59,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132331 conditions, 15006 events. 9740/15006 cut-off events. For 366128/367935 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 101329 event pairs, 2198 based on Foata normal form. 1490/16078 useless extension candidates. Maximal degree in co-relation 132121. Up to 13213 conditions per place. [2023-01-27 22:28:59,734 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 987 selfloop transitions, 324 changer transitions 2/1348 dead transitions. [2023-01-27 22:28:59,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1348 transitions, 31378 flow [2023-01-27 22:28:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:28:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:28:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 771 transitions. [2023-01-27 22:28:59,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3429715302491103 [2023-01-27 22:28:59,736 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 771 transitions. [2023-01-27 22:28:59,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 771 transitions. [2023-01-27 22:28:59,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:59,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 771 transitions. [2023-01-27 22:28:59,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.375) internal successors, (771), 8 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:59,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:59,739 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:59,739 INFO L175 Difference]: Start difference. First operand has 288 places, 1288 transitions, 27667 flow. Second operand 8 states and 771 transitions. [2023-01-27 22:28:59,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1348 transitions, 31378 flow [2023-01-27 22:29:02,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1348 transitions, 29363 flow, removed 901 selfloop flow, removed 12 redundant places. [2023-01-27 22:29:02,200 INFO L231 Difference]: Finished difference. Result has 286 places, 1319 transitions, 27408 flow [2023-01-27 22:29:02,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=25790, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=979, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27408, PETRI_PLACES=286, PETRI_TRANSITIONS=1319} [2023-01-27 22:29:02,201 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2023-01-27 22:29:02,201 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 1319 transitions, 27408 flow [2023-01-27 22:29:02,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 89.64) internal successors, (2241), 25 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:02,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:29:02,202 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] [2023-01-27 22:29:02,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-27 22:29:02,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-27 22:29:02,405 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:29:02,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:29:02,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2115040579, now seen corresponding path program 11 times [2023-01-27 22:29:02,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:29:02,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011922024] [2023-01-27 22:29:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:29:02,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:29:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:29:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:29:02,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:29:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011922024] [2023-01-27 22:29:02,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011922024] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:29:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380747128] [2023-01-27 22:29:02,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:29:02,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:29:02,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:29:02,937 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) [2023-01-27 22:29:02,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-27 22:29:03,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:29:03,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:29:03,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 22:29:03,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:29:03,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:29:03,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 22:29:03,212 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 22 treesize of output 10 [2023-01-27 22:29:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:03,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:29:03,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:29:03,331 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 48 [2023-01-27 22:29:03,334 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 22 treesize of output 16 [2023-01-27 22:29:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:03,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380747128] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:29:03,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:29:03,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-01-27 22:29:03,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329568203] [2023-01-27 22:29:03,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:29:03,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 22:29:03,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:29:03,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 22:29:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=396, Unknown=2, NotChecked=0, Total=506 [2023-01-27 22:29:03,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 281 [2023-01-27 22:29:03,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 1319 transitions, 27408 flow. Second operand has 23 states, 23 states have (on average 89.3913043478261) internal successors, (2056), 23 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:03,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:29:03,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 281 [2023-01-27 22:29:03,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:29:07,677 INFO L130 PetriNetUnfolder]: 9818/15139 cut-off events. [2023-01-27 22:29:07,677 INFO L131 PetriNetUnfolder]: For 344481/346262 co-relation queries the response was YES. [2023-01-27 22:29:07,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130115 conditions, 15139 events. 9818/15139 cut-off events. For 344481/346262 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 102645 event pairs, 2641 based on Foata normal form. 1403/16062 useless extension candidates. Maximal degree in co-relation 129915. Up to 14098 conditions per place. [2023-01-27 22:29:07,829 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 1128 selfloop transitions, 211 changer transitions 1/1375 dead transitions. [2023-01-27 22:29:07,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 1375 transitions, 30927 flow [2023-01-27 22:29:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:29:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:29:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 770 transitions. [2023-01-27 22:29:07,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34252669039145905 [2023-01-27 22:29:07,831 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 770 transitions. [2023-01-27 22:29:07,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 770 transitions. [2023-01-27 22:29:07,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:29:07,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 770 transitions. [2023-01-27 22:29:07,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.25) internal successors, (770), 8 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:07,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:07,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:07,834 INFO L175 Difference]: Start difference. First operand has 286 places, 1319 transitions, 27408 flow. Second operand 8 states and 770 transitions. [2023-01-27 22:29:07,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 1375 transitions, 30927 flow [2023-01-27 22:29:10,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1375 transitions, 30453 flow, removed 156 selfloop flow, removed 3 redundant places. [2023-01-27 22:29:10,115 INFO L231 Difference]: Finished difference. Result has 292 places, 1332 transitions, 27836 flow [2023-01-27 22:29:10,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=26960, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27836, PETRI_PLACES=292, PETRI_TRANSITIONS=1332} [2023-01-27 22:29:10,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2023-01-27 22:29:10,117 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 1332 transitions, 27836 flow [2023-01-27 22:29:10,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 89.3913043478261) internal successors, (2056), 23 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:10,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:29:10,117 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] [2023-01-27 22:29:10,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-01-27 22:29:10,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:29:10,318 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:29:10,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:29:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash 187440625, now seen corresponding path program 12 times [2023-01-27 22:29:10,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:29:10,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992557006] [2023-01-27 22:29:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:29:10,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:29:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:29:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:29:10,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:29:10,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992557006] [2023-01-27 22:29:10,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992557006] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:29:10,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565079831] [2023-01-27 22:29:10,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:29:10,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:29:10,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:29:10,852 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:29:10,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-27 22:29:10,952 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:29:10,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:29:10,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 22:29:10,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:29:11,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:29:11,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 22:29:11,184 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 22 treesize of output 10 [2023-01-27 22:29:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:11,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:29:11,261 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1157 (Array Int Int))) (= (mod c_~sum1~0 4294967296) (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1157) c_~A~0.base) (+ (* c_thread2Thread1of1ForFork0_~i~1 4) c_~A~0.offset)) c_~sum3~0 c_~sum2~0) 4294967296))) is different from false [2023-01-27 22:29:11,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:29:11,270 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 48 [2023-01-27 22:29:11,273 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 22 treesize of output 16 [2023-01-27 22:29:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:11,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565079831] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:29:11,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:29:11,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-01-27 22:29:11,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542777136] [2023-01-27 22:29:11,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:29:11,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 22:29:11,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:29:11,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 22:29:11,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=359, Unknown=1, NotChecked=40, Total=506 [2023-01-27 22:29:11,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 281 [2023-01-27 22:29:11,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 1332 transitions, 27836 flow. Second operand has 23 states, 23 states have (on average 89.34782608695652) internal successors, (2055), 23 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:11,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:29:11,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 281 [2023-01-27 22:29:11,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:29:15,823 INFO L130 PetriNetUnfolder]: 9931/15329 cut-off events. [2023-01-27 22:29:15,823 INFO L131 PetriNetUnfolder]: For 357756/359598 co-relation queries the response was YES. [2023-01-27 22:29:15,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132843 conditions, 15329 events. 9931/15329 cut-off events. For 357756/359598 co-relation queries the response was YES. Maximal size of possible extension queue 1036. Compared 104399 event pairs, 2723 based on Foata normal form. 1432/16239 useless extension candidates. Maximal degree in co-relation 132640. Up to 13798 conditions per place. [2023-01-27 22:29:15,994 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 1083 selfloop transitions, 275 changer transitions 1/1394 dead transitions. [2023-01-27 22:29:15,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1394 transitions, 31475 flow [2023-01-27 22:29:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:29:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:29:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 775 transitions. [2023-01-27 22:29:15,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3447508896797153 [2023-01-27 22:29:15,995 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 775 transitions. [2023-01-27 22:29:15,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 775 transitions. [2023-01-27 22:29:15,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:29:15,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 775 transitions. [2023-01-27 22:29:15,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.875) internal successors, (775), 8 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:15,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:15,998 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:15,998 INFO L175 Difference]: Start difference. First operand has 292 places, 1332 transitions, 27836 flow. Second operand 8 states and 775 transitions. [2023-01-27 22:29:15,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1394 transitions, 31475 flow [2023-01-27 22:29:18,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 1394 transitions, 31025 flow, removed 87 selfloop flow, removed 4 redundant places. [2023-01-27 22:29:18,437 INFO L231 Difference]: Finished difference. Result has 297 places, 1345 transitions, 28499 flow [2023-01-27 22:29:18,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=27386, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1057, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28499, PETRI_PLACES=297, PETRI_TRANSITIONS=1345} [2023-01-27 22:29:18,438 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2023-01-27 22:29:18,438 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 1345 transitions, 28499 flow [2023-01-27 22:29:18,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 89.34782608695652) internal successors, (2055), 23 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:18,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:29:18,439 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] [2023-01-27 22:29:18,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-27 22:29:18,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-01-27 22:29:18,643 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:29:18,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:29:18,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2041011493, now seen corresponding path program 13 times [2023-01-27 22:29:18,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:29:18,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134404396] [2023-01-27 22:29:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:29:18,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:29:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:29:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:29:19,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:29:19,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134404396] [2023-01-27 22:29:19,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134404396] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:29:19,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001856861] [2023-01-27 22:29:19,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:29:19,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:29:19,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:29:19,221 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:29:19,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-27 22:29:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:29:19,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 45 conjunts are in the unsatisfiable core [2023-01-27 22:29:19,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:29:19,404 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 18 treesize of output 16 [2023-01-27 22:29:19,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2023-01-27 22:29:19,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:29:19,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-01-27 22:29:19,580 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 21 treesize of output 21 [2023-01-27 22:29:19,623 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 22 treesize of output 10 [2023-01-27 22:29:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:29:19,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:29:19,715 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1210 (Array Int Int))) (= (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1210) c_~A~0.base) (+ (* c_thread2Thread1of1ForFork0_~i~1 4) c_~A~0.offset)) c_~sum3~0 c_~sum2~0) 4294967296) (mod c_~sum1~0 4294967296))) is different from false [2023-01-27 22:29:21,791 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1210 (Array Int Int)) (v_ArrVal_1209 (Array Int Int))) (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1209) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1210) c_~A~0.base) c_~A~0.offset)) 4294967296) (mod (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4))) c_~sum1~0) 4294967296))) is different from false [2023-01-27 22:29:21,798 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1210 (Array Int Int)) (v_ArrVal_1209 (Array Int Int))) (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1209) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1210) c_~A~0.base) c_~A~0.offset)) 4294967296) (mod (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~sum1~0) 4294967296))) is different from false [2023-01-27 22:29:21,812 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1208 (Array Int Int)) (v_ArrVal_1210 (Array Int Int)) (v_ArrVal_1209 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1208))) (= (mod (+ c_~sum3~0 (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1209) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1210) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum2~0) 4294967296) (mod (+ (select (select .cse0 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum1~0) 4294967296)))) is different from false [2023-01-27 22:29:21,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:29:21,824 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 56 treesize of output 45 [2023-01-27 22:29:21,828 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 862 treesize of output 782 [2023-01-27 22:29:21,838 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 188 treesize of output 180 [2023-01-27 22:29:21,845 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 94 treesize of output 84 [2023-01-27 22:29:21,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2023-01-27 22:29:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-01-27 22:29:22,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001856861] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:29:22,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:29:22,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2023-01-27 22:29:22,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705563780] [2023-01-27 22:29:22,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:29:22,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 22:29:22,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:29:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 22:29:22,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=270, Unknown=6, NotChecked=148, Total=506 [2023-01-27 22:29:22,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 281 [2023-01-27 22:29:22,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 1345 transitions, 28499 flow. Second operand has 23 states, 23 states have (on average 89.6086956521739) internal successors, (2061), 23 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:22,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:29:22,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 281 [2023-01-27 22:29:22,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:29:26,767 INFO L130 PetriNetUnfolder]: 10282/15996 cut-off events. [2023-01-27 22:29:26,767 INFO L131 PetriNetUnfolder]: For 381713/383585 co-relation queries the response was YES. [2023-01-27 22:29:26,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140403 conditions, 15996 events. 10282/15996 cut-off events. For 381713/383585 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 111273 event pairs, 2089 based on Foata normal form. 1406/16929 useless extension candidates. Maximal degree in co-relation 140198. Up to 11466 conditions per place. [2023-01-27 22:29:26,923 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 776 selfloop transitions, 663 changer transitions 1/1475 dead transitions. [2023-01-27 22:29:26,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1475 transitions, 33702 flow [2023-01-27 22:29:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 22:29:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 22:29:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 873 transitions. [2023-01-27 22:29:26,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34519572953736655 [2023-01-27 22:29:26,925 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 873 transitions. [2023-01-27 22:29:26,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 873 transitions. [2023-01-27 22:29:26,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:29:26,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 873 transitions. [2023-01-27 22:29:26,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:26,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:26,927 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:26,927 INFO L175 Difference]: Start difference. First operand has 297 places, 1345 transitions, 28499 flow. Second operand 9 states and 873 transitions. [2023-01-27 22:29:26,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1475 transitions, 33702 flow [2023-01-27 22:29:29,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1475 transitions, 33114 flow, removed 108 selfloop flow, removed 5 redundant places. [2023-01-27 22:29:29,564 INFO L231 Difference]: Finished difference. Result has 303 places, 1402 transitions, 31505 flow [2023-01-27 22:29:29,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=27911, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31505, PETRI_PLACES=303, PETRI_TRANSITIONS=1402} [2023-01-27 22:29:29,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2023-01-27 22:29:29,566 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 1402 transitions, 31505 flow [2023-01-27 22:29:29,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 89.6086956521739) internal successors, (2061), 23 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:29,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:29:29,567 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] [2023-01-27 22:29:29,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-27 22:29:29,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-27 22:29:29,772 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:29:29,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:29:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1016166282, now seen corresponding path program 14 times [2023-01-27 22:29:29,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:29:29,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564031541] [2023-01-27 22:29:29,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:29:29,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:29:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:29:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:29,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:29:29,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564031541] [2023-01-27 22:29:29,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564031541] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:29:29,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677490829] [2023-01-27 22:29:29,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:29:29,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:29:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:29:29,893 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:29:29,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-27 22:29:30,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:29:30,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:29:30,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 22:29:30,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:29:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:30,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:29:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677490829] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:29:30,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:29:30,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-01-27 22:29:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100879619] [2023-01-27 22:29:30,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:29:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 22:29:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:29:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 22:29:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-01-27 22:29:30,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 281 [2023-01-27 22:29:30,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 1402 transitions, 31505 flow. Second operand has 15 states, 15 states have (on average 110.93333333333334) internal successors, (1664), 15 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:30,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:29:30,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 281 [2023-01-27 22:29:30,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:29:36,814 INFO L130 PetriNetUnfolder]: 13410/21460 cut-off events. [2023-01-27 22:29:36,814 INFO L131 PetriNetUnfolder]: For 567902/568113 co-relation queries the response was YES. [2023-01-27 22:29:36,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186312 conditions, 21460 events. 13410/21460 cut-off events. For 567902/568113 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 161058 event pairs, 2940 based on Foata normal form. 895/22341 useless extension candidates. Maximal degree in co-relation 186024. Up to 5389 conditions per place. [2023-01-27 22:29:37,056 INFO L137 encePairwiseOnDemand]: 275/281 looper letters, 1499 selfloop transitions, 277 changer transitions 36/1869 dead transitions. [2023-01-27 22:29:37,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1869 transitions, 42597 flow [2023-01-27 22:29:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 22:29:37,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 22:29:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1064 transitions. [2023-01-27 22:29:37,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420719652036378 [2023-01-27 22:29:37,057 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1064 transitions. [2023-01-27 22:29:37,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1064 transitions. [2023-01-27 22:29:37,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:29:37,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1064 transitions. [2023-01-27 22:29:37,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.22222222222223) internal successors, (1064), 9 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:37,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:37,060 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:37,060 INFO L175 Difference]: Start difference. First operand has 303 places, 1402 transitions, 31505 flow. Second operand 9 states and 1064 transitions. [2023-01-27 22:29:37,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1869 transitions, 42597 flow [2023-01-27 22:29:41,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1869 transitions, 41864 flow, removed 278 selfloop flow, removed 4 redundant places. [2023-01-27 22:29:41,579 INFO L231 Difference]: Finished difference. Result has 311 places, 1359 transitions, 31293 flow [2023-01-27 22:29:41,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=29878, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1065, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31293, PETRI_PLACES=311, PETRI_TRANSITIONS=1359} [2023-01-27 22:29:41,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2023-01-27 22:29:41,580 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 1359 transitions, 31293 flow [2023-01-27 22:29:41,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.93333333333334) internal successors, (1664), 15 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:41,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:29:41,581 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] [2023-01-27 22:29:41,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-27 22:29:41,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:29:41,786 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:29:41,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:29:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash 857030855, now seen corresponding path program 6 times [2023-01-27 22:29:41,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:29:41,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36312207] [2023-01-27 22:29:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:29:41,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:29:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:29:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:41,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:29:41,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36312207] [2023-01-27 22:29:41,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36312207] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:29:41,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460467349] [2023-01-27 22:29:41,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:29:41,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:29:41,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:29:41,865 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:29:41,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-27 22:29:41,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:29:41,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:29:41,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:29:41,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:29:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:42,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:29:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460467349] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:29:42,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:29:42,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-01-27 22:29:42,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192006674] [2023-01-27 22:29:42,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:29:42,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 22:29:42,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:29:42,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 22:29:42,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-01-27 22:29:42,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 281 [2023-01-27 22:29:42,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 1359 transitions, 31293 flow. Second operand has 19 states, 19 states have (on average 103.63157894736842) internal successors, (1969), 19 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:42,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:29:42,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 281 [2023-01-27 22:29:42,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:29:48,290 INFO L130 PetriNetUnfolder]: 11391/18088 cut-off events. [2023-01-27 22:29:48,290 INFO L131 PetriNetUnfolder]: For 473346/473346 co-relation queries the response was YES. [2023-01-27 22:29:48,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163555 conditions, 18088 events. 11391/18088 cut-off events. For 473346/473346 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 128266 event pairs, 4029 based on Foata normal form. 750/18838 useless extension candidates. Maximal degree in co-relation 163263. Up to 12135 conditions per place. [2023-01-27 22:29:48,518 INFO L137 encePairwiseOnDemand]: 270/281 looper letters, 1134 selfloop transitions, 492 changer transitions 1/1627 dead transitions. [2023-01-27 22:29:48,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1627 transitions, 38208 flow [2023-01-27 22:29:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-27 22:29:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-27 22:29:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3070 transitions. [2023-01-27 22:29:48,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39018810371123536 [2023-01-27 22:29:48,524 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3070 transitions. [2023-01-27 22:29:48,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3070 transitions. [2023-01-27 22:29:48,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:29:48,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3070 transitions. [2023-01-27 22:29:48,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 109.64285714285714) internal successors, (3070), 28 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:48,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 281.0) internal successors, (8149), 29 states have internal predecessors, (8149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:48,535 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 281.0) internal successors, (8149), 29 states have internal predecessors, (8149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:48,535 INFO L175 Difference]: Start difference. First operand has 311 places, 1359 transitions, 31293 flow. Second operand 28 states and 3070 transitions. [2023-01-27 22:29:48,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1627 transitions, 38208 flow [2023-01-27 22:29:52,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 1627 transitions, 38201 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 22:29:52,307 INFO L231 Difference]: Finished difference. Result has 354 places, 1442 transitions, 34299 flow [2023-01-27 22:29:52,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=27256, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=34299, PETRI_PLACES=354, PETRI_TRANSITIONS=1442} [2023-01-27 22:29:52,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2023-01-27 22:29:52,309 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 1442 transitions, 34299 flow [2023-01-27 22:29:52,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 103.63157894736842) internal successors, (1969), 19 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:52,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:29:52,309 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] [2023-01-27 22:29:52,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-01-27 22:29:52,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:29:52,510 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:29:52,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:29:52,510 INFO L85 PathProgramCache]: Analyzing trace with hash 601549234, now seen corresponding path program 15 times [2023-01-27 22:29:52,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:29:52,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476195196] [2023-01-27 22:29:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:29:52,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:29:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:29:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:29:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476195196] [2023-01-27 22:29:52,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476195196] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:29:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239196402] [2023-01-27 22:29:52,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:29:52,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:29:52,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:29:52,629 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:29:52,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-01-27 22:29:52,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:29:52,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:29:52,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:29:52,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:29:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:52,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:29:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:29:52,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239196402] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:29:52,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:29:52,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-27 22:29:52,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791360960] [2023-01-27 22:29:52,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:29:52,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 22:29:52,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:29:52,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 22:29:52,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-01-27 22:29:52,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 281 [2023-01-27 22:29:52,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 1442 transitions, 34299 flow. Second operand has 14 states, 14 states have (on average 115.5) internal successors, (1617), 14 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:52,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:29:52,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 281 [2023-01-27 22:29:52,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:29:58,030 INFO L130 PetriNetUnfolder]: 9163/14901 cut-off events. [2023-01-27 22:29:58,030 INFO L131 PetriNetUnfolder]: For 548506/550712 co-relation queries the response was YES. [2023-01-27 22:29:58,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150674 conditions, 14901 events. 9163/14901 cut-off events. For 548506/550712 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 111263 event pairs, 2595 based on Foata normal form. 2138/16456 useless extension candidates. Maximal degree in co-relation 150421. Up to 7832 conditions per place. [2023-01-27 22:29:58,196 INFO L137 encePairwiseOnDemand]: 275/281 looper letters, 1150 selfloop transitions, 100 changer transitions 117/1441 dead transitions. [2023-01-27 22:29:58,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1441 transitions, 36811 flow [2023-01-27 22:29:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:29:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:29:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 976 transitions. [2023-01-27 22:29:58,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43416370106761565 [2023-01-27 22:29:58,198 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 976 transitions. [2023-01-27 22:29:58,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 976 transitions. [2023-01-27 22:29:58,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:29:58,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 976 transitions. [2023-01-27 22:29:58,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:58,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:58,201 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:29:58,201 INFO L175 Difference]: Start difference. First operand has 354 places, 1442 transitions, 34299 flow. Second operand 8 states and 976 transitions. [2023-01-27 22:29:58,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1441 transitions, 36811 flow [2023-01-27 22:30:01,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1441 transitions, 34543 flow, removed 864 selfloop flow, removed 9 redundant places. [2023-01-27 22:30:01,861 INFO L231 Difference]: Finished difference. Result has 354 places, 1198 transitions, 26939 flow [2023-01-27 22:30:01,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=29345, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=26939, PETRI_PLACES=354, PETRI_TRANSITIONS=1198} [2023-01-27 22:30:01,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2023-01-27 22:30:01,863 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 1198 transitions, 26939 flow [2023-01-27 22:30:01,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 115.5) internal successors, (1617), 14 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:01,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:30:01,863 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] [2023-01-27 22:30:01,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-01-27 22:30:02,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:30:02,069 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:30:02,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:30:02,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1702405819, now seen corresponding path program 1 times [2023-01-27 22:30:02,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:30:02,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171644403] [2023-01-27 22:30:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:30:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:30:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:30:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:30:02,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:30:02,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171644403] [2023-01-27 22:30:02,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171644403] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:30:02,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370730318] [2023-01-27 22:30:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:30:02,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:30:02,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:30:02,153 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:30:02,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-01-27 22:30:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:30:02,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:30:02,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:30:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:30:02,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:30:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:30:02,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370730318] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:30:02,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:30:02,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-27 22:30:02,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674088604] [2023-01-27 22:30:02,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:30:02,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 22:30:02,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:30:02,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 22:30:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-01-27 22:30:02,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:30:02,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 1198 transitions, 26939 flow. Second operand has 16 states, 16 states have (on average 107.25) internal successors, (1716), 16 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:02,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:30:02,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:30:02,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:30:07,175 INFO L130 PetriNetUnfolder]: 9139/14882 cut-off events. [2023-01-27 22:30:07,175 INFO L131 PetriNetUnfolder]: For 469498/469622 co-relation queries the response was YES. [2023-01-27 22:30:07,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141639 conditions, 14882 events. 9139/14882 cut-off events. For 469498/469622 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 108238 event pairs, 1446 based on Foata normal form. 354/15198 useless extension candidates. Maximal degree in co-relation 141442. Up to 3551 conditions per place. [2023-01-27 22:30:07,505 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 1049 selfloop transitions, 238 changer transitions 74/1413 dead transitions. [2023-01-27 22:30:07,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 1413 transitions, 32916 flow [2023-01-27 22:30:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 22:30:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 22:30:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1375 transitions. [2023-01-27 22:30:07,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40776986951364175 [2023-01-27 22:30:07,507 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1375 transitions. [2023-01-27 22:30:07,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1375 transitions. [2023-01-27 22:30:07,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:30:07,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1375 transitions. [2023-01-27 22:30:07,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.58333333333333) internal successors, (1375), 12 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:07,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:07,512 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:07,512 INFO L175 Difference]: Start difference. First operand has 354 places, 1198 transitions, 26939 flow. Second operand 12 states and 1375 transitions. [2023-01-27 22:30:07,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 1413 transitions, 32916 flow [2023-01-27 22:30:10,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 1413 transitions, 31423 flow, removed 272 selfloop flow, removed 13 redundant places. [2023-01-27 22:30:10,928 INFO L231 Difference]: Finished difference. Result has 348 places, 1143 transitions, 25233 flow [2023-01-27 22:30:10,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=25303, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=962, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=25233, PETRI_PLACES=348, PETRI_TRANSITIONS=1143} [2023-01-27 22:30:10,929 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2023-01-27 22:30:10,929 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 1143 transitions, 25233 flow [2023-01-27 22:30:10,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 107.25) internal successors, (1716), 16 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:10,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:30:10,930 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] [2023-01-27 22:30:10,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-01-27 22:30:11,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:30:11,130 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:30:11,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:30:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1948873199, now seen corresponding path program 2 times [2023-01-27 22:30:11,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:30:11,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217393490] [2023-01-27 22:30:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:30:11,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:30:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:30:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:11,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:30:11,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217393490] [2023-01-27 22:30:11,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217393490] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:30:11,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475166764] [2023-01-27 22:30:11,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:30:11,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:30:11,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:30:11,229 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:30:11,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-01-27 22:30:11,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:30:11,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:30:11,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:30:11,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:30:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:11,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:30:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475166764] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:30:11,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:30:11,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-27 22:30:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079750140] [2023-01-27 22:30:11,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:30:11,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 22:30:11,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:30:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 22:30:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-01-27 22:30:11,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:30:11,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 1143 transitions, 25233 flow. Second operand has 17 states, 17 states have (on average 107.17647058823529) internal successors, (1822), 17 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:11,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:30:11,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:30:11,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:30:16,450 INFO L130 PetriNetUnfolder]: 9379/15405 cut-off events. [2023-01-27 22:30:16,450 INFO L131 PetriNetUnfolder]: For 420954/421092 co-relation queries the response was YES. [2023-01-27 22:30:16,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141216 conditions, 15405 events. 9379/15405 cut-off events. For 420954/421092 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 114217 event pairs, 623 based on Foata normal form. 316/15713 useless extension candidates. Maximal degree in co-relation 141022. Up to 3599 conditions per place. [2023-01-27 22:30:16,610 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 1310 selfloop transitions, 361 changer transitions 51/1774 dead transitions. [2023-01-27 22:30:16,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 1774 transitions, 38309 flow [2023-01-27 22:30:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 22:30:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 22:30:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2065 transitions. [2023-01-27 22:30:16,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082641360221431 [2023-01-27 22:30:16,612 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2065 transitions. [2023-01-27 22:30:16,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2065 transitions. [2023-01-27 22:30:16,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:30:16,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2065 transitions. [2023-01-27 22:30:16,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 114.72222222222223) internal successors, (2065), 18 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:16,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:16,618 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:16,618 INFO L175 Difference]: Start difference. First operand has 348 places, 1143 transitions, 25233 flow. Second operand 18 states and 2065 transitions. [2023-01-27 22:30:16,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 1774 transitions, 38309 flow [2023-01-27 22:30:19,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 1774 transitions, 37738 flow, removed 195 selfloop flow, removed 10 redundant places. [2023-01-27 22:30:19,596 INFO L231 Difference]: Finished difference. Result has 356 places, 1243 transitions, 27870 flow [2023-01-27 22:30:19,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=24895, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=27870, PETRI_PLACES=356, PETRI_TRANSITIONS=1243} [2023-01-27 22:30:19,597 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2023-01-27 22:30:19,597 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1243 transitions, 27870 flow [2023-01-27 22:30:19,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 107.17647058823529) internal successors, (1822), 17 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:19,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:30:19,597 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] [2023-01-27 22:30:19,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-01-27 22:30:19,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-01-27 22:30:19,798 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:30:19,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:30:19,798 INFO L85 PathProgramCache]: Analyzing trace with hash -980241769, now seen corresponding path program 3 times [2023-01-27 22:30:19,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:30:19,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494456477] [2023-01-27 22:30:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:30:19,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:30:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:30:19,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:19,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:30:19,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494456477] [2023-01-27 22:30:19,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494456477] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:30:19,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420095272] [2023-01-27 22:30:19,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:30:19,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:30:19,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:30:19,895 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:30:19,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-01-27 22:30:20,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 22:30:20,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:30:20,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:30:20,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:30:20,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:20,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:30:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:20,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420095272] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:30:20,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:30:20,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-27 22:30:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109812519] [2023-01-27 22:30:20,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:30:20,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 22:30:20,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:30:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 22:30:20,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-01-27 22:30:20,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:30:20,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1243 transitions, 27870 flow. Second operand has 18 states, 18 states have (on average 107.05555555555556) internal successors, (1927), 18 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:20,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:30:20,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:30:20,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:30:25,110 INFO L130 PetriNetUnfolder]: 9227/15010 cut-off events. [2023-01-27 22:30:25,110 INFO L131 PetriNetUnfolder]: For 434698/434833 co-relation queries the response was YES. [2023-01-27 22:30:25,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146096 conditions, 15010 events. 9227/15010 cut-off events. For 434698/434833 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 108938 event pairs, 615 based on Foata normal form. 353/15359 useless extension candidates. Maximal degree in co-relation 145904. Up to 3505 conditions per place. [2023-01-27 22:30:25,274 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 1362 selfloop transitions, 324 changer transitions 27/1765 dead transitions. [2023-01-27 22:30:25,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 1765 transitions, 38866 flow [2023-01-27 22:30:25,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 22:30:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 22:30:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1936 transitions. [2023-01-27 22:30:25,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40527527737073477 [2023-01-27 22:30:25,279 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1936 transitions. [2023-01-27 22:30:25,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1936 transitions. [2023-01-27 22:30:25,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:30:25,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1936 transitions. [2023-01-27 22:30:25,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 113.88235294117646) internal successors, (1936), 17 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:25,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:25,285 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:25,285 INFO L175 Difference]: Start difference. First operand has 356 places, 1243 transitions, 27870 flow. Second operand 17 states and 1936 transitions. [2023-01-27 22:30:25,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 1765 transitions, 38866 flow [2023-01-27 22:30:29,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 1765 transitions, 37901 flow, removed 239 selfloop flow, removed 13 redundant places. [2023-01-27 22:30:29,226 INFO L231 Difference]: Finished difference. Result has 360 places, 1213 transitions, 27220 flow [2023-01-27 22:30:29,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=25330, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=27220, PETRI_PLACES=360, PETRI_TRANSITIONS=1213} [2023-01-27 22:30:29,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2023-01-27 22:30:29,227 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 1213 transitions, 27220 flow [2023-01-27 22:30:29,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 107.05555555555556) internal successors, (1927), 18 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:29,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:30:29,227 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] [2023-01-27 22:30:29,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-01-27 22:30:29,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:30:29,432 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:30:29,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:30:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash -997197665, now seen corresponding path program 4 times [2023-01-27 22:30:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:30:29,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414753322] [2023-01-27 22:30:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:30:29,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:30:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:30:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:30:29,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:30:29,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414753322] [2023-01-27 22:30:29,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414753322] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:30:29,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381862903] [2023-01-27 22:30:29,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:30:29,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:30:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:30:29,517 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:30:29,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-01-27 22:30:29,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:30:29,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:30:29,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 22:30:29,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:30:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:29,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:30:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:29,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381862903] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:30:29,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:30:29,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-01-27 22:30:29,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795986819] [2023-01-27 22:30:29,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:30:29,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 22:30:29,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:30:29,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 22:30:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-01-27 22:30:29,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 281 [2023-01-27 22:30:29,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 1213 transitions, 27220 flow. Second operand has 16 states, 16 states have (on average 103.8125) internal successors, (1661), 16 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:29,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:30:29,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 281 [2023-01-27 22:30:29,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:30:36,711 INFO L130 PetriNetUnfolder]: 11376/18982 cut-off events. [2023-01-27 22:30:36,711 INFO L131 PetriNetUnfolder]: For 512921/512921 co-relation queries the response was YES. [2023-01-27 22:30:36,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177213 conditions, 18982 events. 11376/18982 cut-off events. For 512921/512921 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 146990 event pairs, 860 based on Foata normal form. 666/19648 useless extension candidates. Maximal degree in co-relation 177025. Up to 4299 conditions per place. [2023-01-27 22:30:36,922 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 1146 selfloop transitions, 1024 changer transitions 58/2228 dead transitions. [2023-01-27 22:30:36,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 2228 transitions, 49280 flow [2023-01-27 22:30:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-01-27 22:30:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-01-27 22:30:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 5187 transitions. [2023-01-27 22:30:36,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3845640569395018 [2023-01-27 22:30:36,927 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 5187 transitions. [2023-01-27 22:30:36,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 5187 transitions. [2023-01-27 22:30:36,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:30:36,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 5187 transitions. [2023-01-27 22:30:36,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 108.0625) internal successors, (5187), 48 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) [2023-01-27 22:30:36,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 281.0) internal successors, (13769), 49 states have internal predecessors, (13769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:36,940 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 281.0) internal successors, (13769), 49 states have internal predecessors, (13769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:36,941 INFO L175 Difference]: Start difference. First operand has 360 places, 1213 transitions, 27220 flow. Second operand 48 states and 5187 transitions. [2023-01-27 22:30:36,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 2228 transitions, 49280 flow [2023-01-27 22:30:41,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 2228 transitions, 48832 flow, removed 82 selfloop flow, removed 8 redundant places. [2023-01-27 22:30:41,772 INFO L231 Difference]: Finished difference. Result has 413 places, 1645 transitions, 37405 flow [2023-01-27 22:30:41,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=25044, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=37405, PETRI_PLACES=413, PETRI_TRANSITIONS=1645} [2023-01-27 22:30:41,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2023-01-27 22:30:41,773 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 1645 transitions, 37405 flow [2023-01-27 22:30:41,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 103.8125) internal successors, (1661), 16 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:41,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:30:41,773 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] [2023-01-27 22:30:41,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-01-27 22:30:41,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:30:41,974 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:30:41,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:30:41,974 INFO L85 PathProgramCache]: Analyzing trace with hash 287573613, now seen corresponding path program 5 times [2023-01-27 22:30:41,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:30:41,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211417446] [2023-01-27 22:30:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:30:41,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:30:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:30:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:42,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:30:42,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211417446] [2023-01-27 22:30:42,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211417446] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:30:42,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424984276] [2023-01-27 22:30:42,064 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:30:42,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:30:42,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:30:42,069 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:30:42,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-01-27 22:30:42,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:30:42,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:30:42,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:30:42,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:30:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:42,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:30:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:42,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424984276] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:30:42,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:30:42,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-27 22:30:42,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461756028] [2023-01-27 22:30:42,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:30:42,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 22:30:42,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:30:42,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 22:30:42,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-01-27 22:30:42,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:30:42,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 1645 transitions, 37405 flow. Second operand has 18 states, 18 states have (on average 107.16666666666667) internal successors, (1929), 18 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:42,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:30:42,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:30:42,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:30:49,324 INFO L130 PetriNetUnfolder]: 10772/18104 cut-off events. [2023-01-27 22:30:49,325 INFO L131 PetriNetUnfolder]: For 534866/534936 co-relation queries the response was YES. [2023-01-27 22:30:49,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177736 conditions, 18104 events. 10772/18104 cut-off events. For 534866/534936 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 141064 event pairs, 789 based on Foata normal form. 377/18472 useless extension candidates. Maximal degree in co-relation 177530. Up to 4547 conditions per place. [2023-01-27 22:30:49,544 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 1589 selfloop transitions, 298 changer transitions 34/2003 dead transitions. [2023-01-27 22:30:49,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 2003 transitions, 45773 flow [2023-01-27 22:30:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 22:30:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 22:30:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1935 transitions. [2023-01-27 22:30:49,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40506594096713416 [2023-01-27 22:30:49,546 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1935 transitions. [2023-01-27 22:30:49,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1935 transitions. [2023-01-27 22:30:49,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:30:49,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1935 transitions. [2023-01-27 22:30:49,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 113.82352941176471) internal successors, (1935), 17 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:49,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:49,551 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:49,551 INFO L175 Difference]: Start difference. First operand has 413 places, 1645 transitions, 37405 flow. Second operand 17 states and 1935 transitions. [2023-01-27 22:30:49,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 2003 transitions, 45773 flow [2023-01-27 22:30:55,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 2003 transitions, 44388 flow, removed 467 selfloop flow, removed 13 redundant places. [2023-01-27 22:30:55,396 INFO L231 Difference]: Finished difference. Result has 418 places, 1589 transitions, 35274 flow [2023-01-27 22:30:55,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=34409, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=35274, PETRI_PLACES=418, PETRI_TRANSITIONS=1589} [2023-01-27 22:30:55,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2023-01-27 22:30:55,398 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 1589 transitions, 35274 flow [2023-01-27 22:30:55,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 107.16666666666667) internal successors, (1929), 18 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:55,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:30:55,398 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] [2023-01-27 22:30:55,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-01-27 22:30:55,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-01-27 22:30:55,603 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:30:55,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:30:55,604 INFO L85 PathProgramCache]: Analyzing trace with hash -141534529, now seen corresponding path program 6 times [2023-01-27 22:30:55,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:30:55,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833531031] [2023-01-27 22:30:55,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:30:55,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:30:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:30:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:55,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:30:55,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833531031] [2023-01-27 22:30:55,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833531031] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:30:55,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907543817] [2023-01-27 22:30:55,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:30:55,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:30:55,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:30:55,685 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:30:55,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-01-27 22:30:55,836 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 22:30:55,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:30:55,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:30:55,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:30:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:55,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:30:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:30:55,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907543817] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:30:55,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:30:55,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-27 22:30:55,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44817463] [2023-01-27 22:30:55,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:30:55,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 22:30:55,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:30:55,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 22:30:55,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-01-27 22:30:55,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:30:55,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 1589 transitions, 35274 flow. Second operand has 17 states, 17 states have (on average 107.11764705882354) internal successors, (1821), 17 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:30:55,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:30:55,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:30:55,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:31:02,161 INFO L130 PetriNetUnfolder]: 10131/16840 cut-off events. [2023-01-27 22:31:02,161 INFO L131 PetriNetUnfolder]: For 478146/478216 co-relation queries the response was YES. [2023-01-27 22:31:02,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166135 conditions, 16840 events. 10131/16840 cut-off events. For 478146/478216 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 127835 event pairs, 731 based on Foata normal form. 269/17088 useless extension candidates. Maximal degree in co-relation 165933. Up to 3767 conditions per place. [2023-01-27 22:31:02,356 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 1674 selfloop transitions, 164 changer transitions 43/1959 dead transitions. [2023-01-27 22:31:02,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1959 transitions, 44403 flow [2023-01-27 22:31:02,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 22:31:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 22:31:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1604 transitions. [2023-01-27 22:31:02,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40772750381291306 [2023-01-27 22:31:02,358 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1604 transitions. [2023-01-27 22:31:02,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1604 transitions. [2023-01-27 22:31:02,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:31:02,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1604 transitions. [2023-01-27 22:31:02,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 114.57142857142857) internal successors, (1604), 14 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:02,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 281.0) internal successors, (4215), 15 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:02,363 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 281.0) internal successors, (4215), 15 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:02,363 INFO L175 Difference]: Start difference. First operand has 418 places, 1589 transitions, 35274 flow. Second operand 14 states and 1604 transitions. [2023-01-27 22:31:02,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1959 transitions, 44403 flow [2023-01-27 22:31:06,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1959 transitions, 43261 flow, removed 148 selfloop flow, removed 15 redundant places. [2023-01-27 22:31:06,936 INFO L231 Difference]: Finished difference. Result has 406 places, 1487 transitions, 32219 flow [2023-01-27 22:31:06,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=32862, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=32219, PETRI_PLACES=406, PETRI_TRANSITIONS=1487} [2023-01-27 22:31:06,938 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 376 predicate places. [2023-01-27 22:31:06,938 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 1487 transitions, 32219 flow [2023-01-27 22:31:06,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 107.11764705882354) internal successors, (1821), 17 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:06,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:31:06,939 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] [2023-01-27 22:31:06,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-01-27 22:31:07,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-01-27 22:31:07,144 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:31:07,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:31:07,145 INFO L85 PathProgramCache]: Analyzing trace with hash -791713918, now seen corresponding path program 7 times [2023-01-27 22:31:07,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:31:07,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380649325] [2023-01-27 22:31:07,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:31:07,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:31:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:31:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:31:07,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:31:07,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380649325] [2023-01-27 22:31:07,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380649325] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:31:07,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136448907] [2023-01-27 22:31:07,243 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:31:07,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:31:07,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:31:07,244 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:31:07,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-01-27 22:31:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:31:07,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 22:31:07,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:31:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:31:07,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:31:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:31:07,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136448907] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:31:07,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:31:07,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-27 22:31:07,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46122878] [2023-01-27 22:31:07,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:31:07,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 22:31:07,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:31:07,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 22:31:07,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-01-27 22:31:07,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 281 [2023-01-27 22:31:07,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 1487 transitions, 32219 flow. Second operand has 14 states, 14 states have (on average 111.78571428571429) internal successors, (1565), 14 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:07,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:31:07,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 281 [2023-01-27 22:31:07,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:31:11,337 INFO L130 PetriNetUnfolder]: 6762/11197 cut-off events. [2023-01-27 22:31:11,338 INFO L131 PetriNetUnfolder]: For 375845/376102 co-relation queries the response was YES. [2023-01-27 22:31:11,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121405 conditions, 11197 events. 6762/11197 cut-off events. For 375845/376102 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 80658 event pairs, 881 based on Foata normal form. 801/11957 useless extension candidates. Maximal degree in co-relation 121278. Up to 4125 conditions per place. [2023-01-27 22:31:11,459 INFO L137 encePairwiseOnDemand]: 275/281 looper letters, 1096 selfloop transitions, 53 changer transitions 302/1526 dead transitions. [2023-01-27 22:31:11,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1526 transitions, 36067 flow [2023-01-27 22:31:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:31:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:31:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 938 transitions. [2023-01-27 22:31:11,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41725978647686834 [2023-01-27 22:31:11,460 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 938 transitions. [2023-01-27 22:31:11,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 938 transitions. [2023-01-27 22:31:11,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:31:11,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 938 transitions. [2023-01-27 22:31:11,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.25) internal successors, (938), 8 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:11,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:11,462 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:11,462 INFO L175 Difference]: Start difference. First operand has 406 places, 1487 transitions, 32219 flow. Second operand 8 states and 938 transitions. [2023-01-27 22:31:11,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1526 transitions, 36067 flow [2023-01-27 22:31:14,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 1526 transitions, 35434 flow, removed 103 selfloop flow, removed 19 redundant places. [2023-01-27 22:31:14,129 INFO L231 Difference]: Finished difference. Result has 370 places, 1082 transitions, 23340 flow [2023-01-27 22:31:14,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=29882, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23340, PETRI_PLACES=370, PETRI_TRANSITIONS=1082} [2023-01-27 22:31:14,130 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2023-01-27 22:31:14,130 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 1082 transitions, 23340 flow [2023-01-27 22:31:14,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 111.78571428571429) internal successors, (1565), 14 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:14,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:31:14,131 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] [2023-01-27 22:31:14,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-01-27 22:31:14,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-01-27 22:31:14,331 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:31:14,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:31:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash -349019679, now seen corresponding path program 16 times [2023-01-27 22:31:14,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:31:14,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253590661] [2023-01-27 22:31:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:31:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:31:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:31:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:31:14,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:31:14,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253590661] [2023-01-27 22:31:14,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253590661] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:31:14,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499996047] [2023-01-27 22:31:14,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:31:14,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:31:14,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:31:14,497 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:31:14,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-01-27 22:31:14,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:31:14,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:31:14,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:31:14,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:31:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:31:14,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:31:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:31:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499996047] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:31:14,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:31:14,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2023-01-27 22:31:14,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924470036] [2023-01-27 22:31:14,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:31:14,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 22:31:14,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:31:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 22:31:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-01-27 22:31:14,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 281 [2023-01-27 22:31:14,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 1082 transitions, 23340 flow. Second operand has 17 states, 17 states have (on average 103.76470588235294) internal successors, (1764), 17 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:14,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:31:14,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 281 [2023-01-27 22:31:14,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:31:18,031 INFO L130 PetriNetUnfolder]: 6159/9446 cut-off events. [2023-01-27 22:31:18,031 INFO L131 PetriNetUnfolder]: For 327379/327379 co-relation queries the response was YES. [2023-01-27 22:31:18,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105250 conditions, 9446 events. 6159/9446 cut-off events. For 327379/327379 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 56993 event pairs, 289 based on Foata normal form. 148/9594 useless extension candidates. Maximal degree in co-relation 105132. Up to 3023 conditions per place. [2023-01-27 22:31:18,132 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 749 selfloop transitions, 776 changer transitions 0/1525 dead transitions. [2023-01-27 22:31:18,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1525 transitions, 34612 flow [2023-01-27 22:31:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-01-27 22:31:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-01-27 22:31:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3371 transitions. [2023-01-27 22:31:18,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869819768109287 [2023-01-27 22:31:18,135 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3371 transitions. [2023-01-27 22:31:18,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3371 transitions. [2023-01-27 22:31:18,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:31:18,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3371 transitions. [2023-01-27 22:31:18,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 108.74193548387096) internal successors, (3371), 31 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:18,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 281.0) internal successors, (8992), 32 states have internal predecessors, (8992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:18,146 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 281.0) internal successors, (8992), 32 states have internal predecessors, (8992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:18,146 INFO L175 Difference]: Start difference. First operand has 370 places, 1082 transitions, 23340 flow. Second operand 31 states and 3371 transitions. [2023-01-27 22:31:18,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1525 transitions, 34612 flow [2023-01-27 22:31:20,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1525 transitions, 33902 flow, removed 209 selfloop flow, removed 14 redundant places. [2023-01-27 22:31:20,187 INFO L231 Difference]: Finished difference. Result has 327 places, 1233 transitions, 28527 flow [2023-01-27 22:31:20,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=22238, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1054, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=611, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=28527, PETRI_PLACES=327, PETRI_TRANSITIONS=1233} [2023-01-27 22:31:20,188 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2023-01-27 22:31:20,188 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 1233 transitions, 28527 flow [2023-01-27 22:31:20,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 103.76470588235294) internal successors, (1764), 17 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:20,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:31:20,189 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] [2023-01-27 22:31:20,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-01-27 22:31:20,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-01-27 22:31:20,393 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:31:20,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:31:20,393 INFO L85 PathProgramCache]: Analyzing trace with hash -307992218, now seen corresponding path program 8 times [2023-01-27 22:31:20,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:31:20,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228388751] [2023-01-27 22:31:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:31:20,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:31:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:31:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:31:20,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:31:20,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228388751] [2023-01-27 22:31:20,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228388751] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:31:20,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663496610] [2023-01-27 22:31:20,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:31:20,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:31:20,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:31:20,499 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:31:20,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-01-27 22:31:20,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:31:20,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:31:20,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:31:20,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:31:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:31:20,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:31:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:31:20,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663496610] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:31:20,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:31:20,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-27 22:31:20,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972822607] [2023-01-27 22:31:20,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:31:20,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 22:31:20,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:31:20,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 22:31:20,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-01-27 22:31:20,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:31:20,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 1233 transitions, 28527 flow. Second operand has 20 states, 20 states have (on average 107.2) internal successors, (2144), 20 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:20,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:31:20,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:31:20,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:31:25,037 INFO L130 PetriNetUnfolder]: 8114/12522 cut-off events. [2023-01-27 22:31:25,037 INFO L131 PetriNetUnfolder]: For 439616/439640 co-relation queries the response was YES. [2023-01-27 22:31:25,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144654 conditions, 12522 events. 8114/12522 cut-off events. For 439616/439640 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 79345 event pairs, 696 based on Foata normal form. 98/12616 useless extension candidates. Maximal degree in co-relation 144530. Up to 4420 conditions per place. [2023-01-27 22:31:25,175 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 1176 selfloop transitions, 496 changer transitions 0/1732 dead transitions. [2023-01-27 22:31:25,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 1732 transitions, 42153 flow [2023-01-27 22:31:25,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 22:31:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 22:31:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2054 transitions. [2023-01-27 22:31:25,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40608936338473706 [2023-01-27 22:31:25,177 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2054 transitions. [2023-01-27 22:31:25,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2054 transitions. [2023-01-27 22:31:25,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:31:25,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2054 transitions. [2023-01-27 22:31:25,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 114.11111111111111) internal successors, (2054), 18 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:25,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:25,181 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:25,181 INFO L175 Difference]: Start difference. First operand has 327 places, 1233 transitions, 28527 flow. Second operand 18 states and 2054 transitions. [2023-01-27 22:31:25,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 1732 transitions, 42153 flow [2023-01-27 22:31:28,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 1732 transitions, 40987 flow, removed 470 selfloop flow, removed 8 redundant places. [2023-01-27 22:31:28,227 INFO L231 Difference]: Finished difference. Result has 342 places, 1338 transitions, 31826 flow [2023-01-27 22:31:28,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=27595, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=761, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=31826, PETRI_PLACES=342, PETRI_TRANSITIONS=1338} [2023-01-27 22:31:28,229 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2023-01-27 22:31:28,229 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 1338 transitions, 31826 flow [2023-01-27 22:31:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.2) internal successors, (2144), 20 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:28,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:31:28,229 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] [2023-01-27 22:31:28,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-01-27 22:31:28,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:31:28,430 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:31:28,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:31:28,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1396543017, now seen corresponding path program 17 times [2023-01-27 22:31:28,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:31:28,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352978177] [2023-01-27 22:31:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:31:28,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:31:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:31:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:31:28,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:31:28,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352978177] [2023-01-27 22:31:28,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352978177] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:31:28,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605420980] [2023-01-27 22:31:28,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:31:28,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:31:28,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:31:28,525 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:31:28,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-01-27 22:31:28,688 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:31:28,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:31:28,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:31:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:31:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:31:28,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:31:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:31:28,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605420980] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:31:28,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:31:28,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 16 [2023-01-27 22:31:28,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270734955] [2023-01-27 22:31:28,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:31:28,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 22:31:28,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:31:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 22:31:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-01-27 22:31:28,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 281 [2023-01-27 22:31:28,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 1338 transitions, 31826 flow. Second operand has 16 states, 16 states have (on average 103.6875) internal successors, (1659), 16 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:28,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:31:28,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 281 [2023-01-27 22:31:28,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:31:33,459 INFO L130 PetriNetUnfolder]: 8115/12434 cut-off events. [2023-01-27 22:31:33,459 INFO L131 PetriNetUnfolder]: For 452147/452147 co-relation queries the response was YES. [2023-01-27 22:31:33,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146377 conditions, 12434 events. 8115/12434 cut-off events. For 452147/452147 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 77310 event pairs, 419 based on Foata normal form. 64/12498 useless extension candidates. Maximal degree in co-relation 146250. Up to 4358 conditions per place. [2023-01-27 22:31:33,610 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 887 selfloop transitions, 750 changer transitions 0/1637 dead transitions. [2023-01-27 22:31:33,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1637 transitions, 41197 flow [2023-01-27 22:31:33,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-27 22:31:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-27 22:31:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2721 transitions. [2023-01-27 22:31:33,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3873309608540925 [2023-01-27 22:31:33,613 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2721 transitions. [2023-01-27 22:31:33,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2721 transitions. [2023-01-27 22:31:33,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:31:33,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2721 transitions. [2023-01-27 22:31:33,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 108.84) internal successors, (2721), 25 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:33,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 281.0) internal successors, (7306), 26 states have internal predecessors, (7306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:33,619 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 281.0) internal successors, (7306), 26 states have internal predecessors, (7306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:33,619 INFO L175 Difference]: Start difference. First operand has 342 places, 1338 transitions, 31826 flow. Second operand 25 states and 2721 transitions. [2023-01-27 22:31:33,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1637 transitions, 41197 flow [2023-01-27 22:31:37,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 1637 transitions, 39899 flow, removed 598 selfloop flow, removed 5 redundant places. [2023-01-27 22:31:37,103 INFO L231 Difference]: Finished difference. Result has 368 places, 1359 transitions, 33482 flow [2023-01-27 22:31:37,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=30604, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=714, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=33482, PETRI_PLACES=368, PETRI_TRANSITIONS=1359} [2023-01-27 22:31:37,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2023-01-27 22:31:37,105 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 1359 transitions, 33482 flow [2023-01-27 22:31:37,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 103.6875) internal successors, (1659), 16 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:37,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:31:37,105 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] [2023-01-27 22:31:37,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-01-27 22:31:37,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-01-27 22:31:37,306 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:31:37,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:31:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1870581060, now seen corresponding path program 9 times [2023-01-27 22:31:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:31:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432929849] [2023-01-27 22:31:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:31:37,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:31:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:31:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:31:37,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:31:37,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432929849] [2023-01-27 22:31:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432929849] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:31:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384305332] [2023-01-27 22:31:37,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:31:37,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:31:37,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:31:37,409 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:31:37,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-01-27 22:31:37,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:31:37,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:31:37,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:31:37,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:31:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:31:37,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:31:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:31:37,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384305332] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:31:37,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:31:37,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-27 22:31:37,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669793522] [2023-01-27 22:31:37,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:31:37,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 22:31:37,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:31:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 22:31:37,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-01-27 22:31:37,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:31:37,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 1359 transitions, 33482 flow. Second operand has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:37,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:31:37,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:31:37,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:31:41,758 INFO L130 PetriNetUnfolder]: 7959/12246 cut-off events. [2023-01-27 22:31:41,758 INFO L131 PetriNetUnfolder]: For 460368/460382 co-relation queries the response was YES. [2023-01-27 22:31:41,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147065 conditions, 12246 events. 7959/12246 cut-off events. For 460368/460382 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 76805 event pairs, 1600 based on Foata normal form. 52/12286 useless extension candidates. Maximal degree in co-relation 146931. Up to 8351 conditions per place. [2023-01-27 22:31:41,910 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 1060 selfloop transitions, 294 changer transitions 0/1411 dead transitions. [2023-01-27 22:31:41,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1411 transitions, 36840 flow [2023-01-27 22:31:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 22:31:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 22:31:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1013 transitions. [2023-01-27 22:31:41,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40055357848952156 [2023-01-27 22:31:41,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1013 transitions. [2023-01-27 22:31:41,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1013 transitions. [2023-01-27 22:31:41,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:31:41,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1013 transitions. [2023-01-27 22:31:41,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.55555555555556) internal successors, (1013), 9 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:41,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:41,914 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:41,914 INFO L175 Difference]: Start difference. First operand has 368 places, 1359 transitions, 33482 flow. Second operand 9 states and 1013 transitions. [2023-01-27 22:31:41,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1411 transitions, 36840 flow [2023-01-27 22:31:45,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 1411 transitions, 35360 flow, removed 338 selfloop flow, removed 12 redundant places. [2023-01-27 22:31:45,607 INFO L231 Difference]: Finished difference. Result has 356 places, 1345 transitions, 32314 flow [2023-01-27 22:31:45,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=31638, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1048, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32314, PETRI_PLACES=356, PETRI_TRANSITIONS=1345} [2023-01-27 22:31:45,608 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2023-01-27 22:31:45,608 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1345 transitions, 32314 flow [2023-01-27 22:31:45,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:45,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:31:45,608 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] [2023-01-27 22:31:45,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-01-27 22:31:45,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-01-27 22:31:45,809 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:31:45,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:31:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 989504847, now seen corresponding path program 18 times [2023-01-27 22:31:45,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:31:45,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39278573] [2023-01-27 22:31:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:31:45,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:31:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:31:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:31:45,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:31:45,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39278573] [2023-01-27 22:31:45,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39278573] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:31:45,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080448876] [2023-01-27 22:31:45,906 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:31:45,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:31:45,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:31:45,907 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:31:45,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-01-27 22:31:46,067 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:31:46,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:31:46,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:31:46,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:31:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:31:46,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:31:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:31:46,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080448876] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:31:46,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:31:46,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-27 22:31:46,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854129472] [2023-01-27 22:31:46,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:31:46,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 22:31:46,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:31:46,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 22:31:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-01-27 22:31:46,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:31:46,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1345 transitions, 32314 flow. Second operand has 19 states, 19 states have (on average 107.15789473684211) internal successors, (2036), 19 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:46,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:31:46,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:31:46,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:31:50,313 INFO L130 PetriNetUnfolder]: 7783/11925 cut-off events. [2023-01-27 22:31:50,314 INFO L131 PetriNetUnfolder]: For 428214/428218 co-relation queries the response was YES. [2023-01-27 22:31:50,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140298 conditions, 11925 events. 7783/11925 cut-off events. For 428214/428218 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 73612 event pairs, 849 based on Foata normal form. 132/12050 useless extension candidates. Maximal degree in co-relation 140165. Up to 4267 conditions per place. [2023-01-27 22:31:50,453 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 816 selfloop transitions, 621 changer transitions 0/1492 dead transitions. [2023-01-27 22:31:50,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 1492 transitions, 37530 flow [2023-01-27 22:31:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 22:31:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 22:31:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1478 transitions. [2023-01-27 22:31:50,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045989597591021 [2023-01-27 22:31:50,455 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1478 transitions. [2023-01-27 22:31:50,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1478 transitions. [2023-01-27 22:31:50,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:31:50,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1478 transitions. [2023-01-27 22:31:50,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.6923076923077) internal successors, (1478), 13 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:50,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 281.0) internal successors, (3934), 14 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:50,459 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 281.0) internal successors, (3934), 14 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:50,459 INFO L175 Difference]: Start difference. First operand has 356 places, 1345 transitions, 32314 flow. Second operand 13 states and 1478 transitions. [2023-01-27 22:31:50,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 1492 transitions, 37530 flow [2023-01-27 22:31:53,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 1492 transitions, 36999 flow, removed 19 selfloop flow, removed 7 redundant places. [2023-01-27 22:31:53,669 INFO L231 Difference]: Finished difference. Result has 362 places, 1344 transitions, 33121 flow [2023-01-27 22:31:53,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=31161, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=594, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=33121, PETRI_PLACES=362, PETRI_TRANSITIONS=1344} [2023-01-27 22:31:53,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2023-01-27 22:31:53,670 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 1344 transitions, 33121 flow [2023-01-27 22:31:53,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.15789473684211) internal successors, (2036), 19 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:53,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:31:53,670 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] [2023-01-27 22:31:53,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-01-27 22:31:53,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-01-27 22:31:53,871 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:31:53,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:31:53,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1751635154, now seen corresponding path program 10 times [2023-01-27 22:31:53,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:31:53,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135421296] [2023-01-27 22:31:53,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:31:53,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:31:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:31:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:31:53,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:31:53,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135421296] [2023-01-27 22:31:53,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135421296] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:31:53,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852156753] [2023-01-27 22:31:53,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:31:53,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:31:53,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:31:53,953 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:31:53,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-01-27 22:31:54,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:31:54,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:31:54,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:31:54,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:31:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:31:54,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:31:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:31:54,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852156753] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:31:54,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:31:54,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2023-01-27 22:31:54,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220298140] [2023-01-27 22:31:54,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:31:54,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 22:31:54,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:31:54,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 22:31:54,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-01-27 22:31:54,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 281 [2023-01-27 22:31:54,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 1344 transitions, 33121 flow. Second operand has 17 states, 17 states have (on average 103.41176470588235) internal successors, (1758), 17 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:54,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:31:54,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 281 [2023-01-27 22:31:54,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:31:58,519 INFO L130 PetriNetUnfolder]: 7823/11908 cut-off events. [2023-01-27 22:31:58,519 INFO L131 PetriNetUnfolder]: For 428854/428854 co-relation queries the response was YES. [2023-01-27 22:31:58,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141941 conditions, 11908 events. 7823/11908 cut-off events. For 428854/428854 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 72485 event pairs, 761 based on Foata normal form. 36/11944 useless extension candidates. Maximal degree in co-relation 141808. Up to 6403 conditions per place. [2023-01-27 22:31:58,819 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 993 selfloop transitions, 486 changer transitions 0/1479 dead transitions. [2023-01-27 22:31:58,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1479 transitions, 38604 flow [2023-01-27 22:31:58,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 22:31:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 22:31:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2056 transitions. [2023-01-27 22:31:58,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3850908409814572 [2023-01-27 22:31:58,821 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2056 transitions. [2023-01-27 22:31:58,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2056 transitions. [2023-01-27 22:31:58,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:31:58,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2056 transitions. [2023-01-27 22:31:58,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 108.21052631578948) internal successors, (2056), 19 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:58,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:58,827 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:31:58,827 INFO L175 Difference]: Start difference. First operand has 362 places, 1344 transitions, 33121 flow. Second operand 19 states and 2056 transitions. [2023-01-27 22:31:58,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1479 transitions, 38604 flow [2023-01-27 22:32:02,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 1479 transitions, 37536 flow, removed 52 selfloop flow, removed 13 redundant places. [2023-01-27 22:32:02,065 INFO L231 Difference]: Finished difference. Result has 370 places, 1338 transitions, 32949 flow [2023-01-27 22:32:02,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=31851, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=32949, PETRI_PLACES=370, PETRI_TRANSITIONS=1338} [2023-01-27 22:32:02,066 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2023-01-27 22:32:02,066 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 1338 transitions, 32949 flow [2023-01-27 22:32:02,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 103.41176470588235) internal successors, (1758), 17 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:02,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:32:02,066 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] [2023-01-27 22:32:02,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-01-27 22:32:02,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:32:02,267 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:32:02,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:32:02,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1250017593, now seen corresponding path program 19 times [2023-01-27 22:32:02,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:32:02,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360471730] [2023-01-27 22:32:02,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:32:02,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:32:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:32:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:32:02,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:32:02,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360471730] [2023-01-27 22:32:02,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360471730] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:32:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774084388] [2023-01-27 22:32:02,351 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:32:02,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:32:02,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:32:02,352 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:32:02,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-01-27 22:32:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:32:02,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:32:02,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:32:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:32:02,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:32:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:32:02,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774084388] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:32:02,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:32:02,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-27 22:32:02,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300671303] [2023-01-27 22:32:02,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:32:02,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 22:32:02,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:32:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 22:32:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-01-27 22:32:02,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:32:02,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 1338 transitions, 32949 flow. Second operand has 20 states, 20 states have (on average 107.1) internal successors, (2142), 20 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:02,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:32:02,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:32:02,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:32:06,750 INFO L130 PetriNetUnfolder]: 7839/11948 cut-off events. [2023-01-27 22:32:06,751 INFO L131 PetriNetUnfolder]: For 439054/439095 co-relation queries the response was YES. [2023-01-27 22:32:06,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142709 conditions, 11948 events. 7839/11948 cut-off events. For 439054/439095 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 73301 event pairs, 1362 based on Foata normal form. 151/12087 useless extension candidates. Maximal degree in co-relation 142576. Up to 7529 conditions per place. [2023-01-27 22:32:06,892 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 1056 selfloop transitions, 456 changer transitions 0/1565 dead transitions. [2023-01-27 22:32:06,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1565 transitions, 40382 flow [2023-01-27 22:32:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 22:32:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 22:32:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1582 transitions. [2023-01-27 22:32:06,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40213523131672596 [2023-01-27 22:32:06,894 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1582 transitions. [2023-01-27 22:32:06,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1582 transitions. [2023-01-27 22:32:06,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:32:06,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1582 transitions. [2023-01-27 22:32:06,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 113.0) internal successors, (1582), 14 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:06,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 281.0) internal successors, (4215), 15 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:06,897 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 281.0) internal successors, (4215), 15 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:06,897 INFO L175 Difference]: Start difference. First operand has 370 places, 1338 transitions, 32949 flow. Second operand 14 states and 1582 transitions. [2023-01-27 22:32:06,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1565 transitions, 40382 flow [2023-01-27 22:32:10,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1565 transitions, 39674 flow, removed 14 selfloop flow, removed 12 redundant places. [2023-01-27 22:32:10,192 INFO L231 Difference]: Finished difference. Result has 375 places, 1362 transitions, 34107 flow [2023-01-27 22:32:10,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=31765, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=872, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=34107, PETRI_PLACES=375, PETRI_TRANSITIONS=1362} [2023-01-27 22:32:10,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2023-01-27 22:32:10,194 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 1362 transitions, 34107 flow [2023-01-27 22:32:10,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.1) internal successors, (2142), 20 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:10,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:32:10,194 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] [2023-01-27 22:32:10,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-01-27 22:32:10,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:32:10,400 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:32:10,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:32:10,400 INFO L85 PathProgramCache]: Analyzing trace with hash 801782288, now seen corresponding path program 11 times [2023-01-27 22:32:10,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:32:10,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126648627] [2023-01-27 22:32:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:32:10,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:32:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:32:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:32:10,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:32:10,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126648627] [2023-01-27 22:32:10,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126648627] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:32:10,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135016564] [2023-01-27 22:32:10,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:32:10,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:32:10,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:32:10,497 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:32:10,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-01-27 22:32:10,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:32:10,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:32:10,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:32:10,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:32:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:32:10,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:32:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:32:10,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135016564] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:32:10,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:32:10,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2023-01-27 22:32:10,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628905955] [2023-01-27 22:32:10,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:32:10,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 22:32:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:32:10,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 22:32:10,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-01-27 22:32:10,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 281 [2023-01-27 22:32:10,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1362 transitions, 34107 flow. Second operand has 17 states, 17 states have (on average 103.52941176470588) internal successors, (1760), 17 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:10,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:32:10,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 281 [2023-01-27 22:32:10,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:32:15,090 INFO L130 PetriNetUnfolder]: 7885/11996 cut-off events. [2023-01-27 22:32:15,090 INFO L131 PetriNetUnfolder]: For 439906/439906 co-relation queries the response was YES. [2023-01-27 22:32:15,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143875 conditions, 11996 events. 7885/11996 cut-off events. For 439906/439906 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 73037 event pairs, 396 based on Foata normal form. 46/12042 useless extension candidates. Maximal degree in co-relation 143738. Up to 4382 conditions per place. [2023-01-27 22:32:15,395 INFO L137 encePairwiseOnDemand]: 271/281 looper letters, 1059 selfloop transitions, 757 changer transitions 0/1816 dead transitions. [2023-01-27 22:32:15,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 1816 transitions, 47185 flow [2023-01-27 22:32:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-27 22:32:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-27 22:32:15,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2697 transitions. [2023-01-27 22:32:15,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.383914590747331 [2023-01-27 22:32:15,397 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2697 transitions. [2023-01-27 22:32:15,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2697 transitions. [2023-01-27 22:32:15,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:32:15,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2697 transitions. [2023-01-27 22:32:15,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 107.88) internal successors, (2697), 25 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:15,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 281.0) internal successors, (7306), 26 states have internal predecessors, (7306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:15,402 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 281.0) internal successors, (7306), 26 states have internal predecessors, (7306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:15,402 INFO L175 Difference]: Start difference. First operand has 375 places, 1362 transitions, 34107 flow. Second operand 25 states and 2697 transitions. [2023-01-27 22:32:15,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 1816 transitions, 47185 flow [2023-01-27 22:32:18,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1816 transitions, 46532 flow, removed 79 selfloop flow, removed 7 redundant places. [2023-01-27 22:32:18,751 INFO L231 Difference]: Finished difference. Result has 395 places, 1510 transitions, 38955 flow [2023-01-27 22:32:18,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=33400, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=603, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=741, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=38955, PETRI_PLACES=395, PETRI_TRANSITIONS=1510} [2023-01-27 22:32:18,751 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2023-01-27 22:32:18,752 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 1510 transitions, 38955 flow [2023-01-27 22:32:18,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 103.52941176470588) internal successors, (1760), 17 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:18,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:32:18,752 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] [2023-01-27 22:32:18,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-01-27 22:32:18,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-01-27 22:32:18,953 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:32:18,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:32:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1391823177, now seen corresponding path program 20 times [2023-01-27 22:32:18,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:32:18,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632551039] [2023-01-27 22:32:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:32:18,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:32:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:32:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:32:19,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:32:19,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632551039] [2023-01-27 22:32:19,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632551039] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:32:19,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941210004] [2023-01-27 22:32:19,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:32:19,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:32:19,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:32:19,026 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:32:19,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-01-27 22:32:19,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:32:19,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:32:19,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:32:19,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:32:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:32:19,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:32:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:32:19,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941210004] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:32:19,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:32:19,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-27 22:32:19,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848443150] [2023-01-27 22:32:19,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:32:19,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 22:32:19,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:32:19,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 22:32:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-01-27 22:32:19,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:32:19,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1510 transitions, 38955 flow. Second operand has 18 states, 18 states have (on average 107.11111111111111) internal successors, (1928), 18 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:19,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:32:19,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:32:19,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:32:23,317 INFO L130 PetriNetUnfolder]: 7721/11767 cut-off events. [2023-01-27 22:32:23,317 INFO L131 PetriNetUnfolder]: For 455210/455257 co-relation queries the response was YES. [2023-01-27 22:32:23,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144243 conditions, 11767 events. 7721/11767 cut-off events. For 455210/455257 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 71926 event pairs, 1424 based on Foata normal form. 66/11823 useless extension candidates. Maximal degree in co-relation 144103. Up to 7907 conditions per place. [2023-01-27 22:32:23,453 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 1199 selfloop transitions, 378 changer transitions 0/1652 dead transitions. [2023-01-27 22:32:23,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1652 transitions, 44628 flow [2023-01-27 22:32:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 22:32:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 22:32:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1007 transitions. [2023-01-27 22:32:23,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3981810992487149 [2023-01-27 22:32:23,454 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1007 transitions. [2023-01-27 22:32:23,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1007 transitions. [2023-01-27 22:32:23,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:32:23,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1007 transitions. [2023-01-27 22:32:23,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.88888888888889) internal successors, (1007), 9 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:23,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:23,456 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:23,457 INFO L175 Difference]: Start difference. First operand has 395 places, 1510 transitions, 38955 flow. Second operand 9 states and 1007 transitions. [2023-01-27 22:32:23,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1652 transitions, 44628 flow [2023-01-27 22:32:27,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1652 transitions, 43413 flow, removed 149 selfloop flow, removed 11 redundant places. [2023-01-27 22:32:27,293 INFO L231 Difference]: Finished difference. Result has 393 places, 1513 transitions, 38592 flow [2023-01-27 22:32:27,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=37477, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38592, PETRI_PLACES=393, PETRI_TRANSITIONS=1513} [2023-01-27 22:32:27,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2023-01-27 22:32:27,294 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 1513 transitions, 38592 flow [2023-01-27 22:32:27,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 107.11111111111111) internal successors, (1928), 18 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:27,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:32:27,295 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] [2023-01-27 22:32:27,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-01-27 22:32:27,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-01-27 22:32:27,495 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:32:27,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:32:27,495 INFO L85 PathProgramCache]: Analyzing trace with hash 3718442, now seen corresponding path program 12 times [2023-01-27 22:32:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:32:27,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242662642] [2023-01-27 22:32:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:32:27,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:32:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:32:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:32:27,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:32:27,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242662642] [2023-01-27 22:32:27,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242662642] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:32:27,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479905611] [2023-01-27 22:32:27,582 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:32:27,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:32:27,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:32:27,583 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:32:27,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-01-27 22:32:27,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:32:27,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:32:27,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:32:27,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:32:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:32:27,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:32:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:32:27,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479905611] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:32:27,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:32:27,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-27 22:32:27,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356812955] [2023-01-27 22:32:27,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:32:27,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 22:32:27,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:32:27,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 22:32:27,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-01-27 22:32:27,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:32:27,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 1513 transitions, 38592 flow. Second operand has 19 states, 19 states have (on average 107.05263157894737) internal successors, (2034), 19 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:27,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:32:27,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:32:27,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:32:31,958 INFO L130 PetriNetUnfolder]: 7673/11659 cut-off events. [2023-01-27 22:32:31,958 INFO L131 PetriNetUnfolder]: For 440190/440234 co-relation queries the response was YES. [2023-01-27 22:32:32,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141636 conditions, 11659 events. 7673/11659 cut-off events. For 440190/440234 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 70787 event pairs, 1396 based on Foata normal form. 57/11706 useless extension candidates. Maximal degree in co-relation 141496. Up to 7714 conditions per place. [2023-01-27 22:32:32,089 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 1148 selfloop transitions, 371 changer transitions 0/1594 dead transitions. [2023-01-27 22:32:32,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 1594 transitions, 43017 flow [2023-01-27 22:32:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 22:32:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 22:32:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1010 transitions. [2023-01-27 22:32:32,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39936733886911824 [2023-01-27 22:32:32,090 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1010 transitions. [2023-01-27 22:32:32,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1010 transitions. [2023-01-27 22:32:32,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:32:32,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1010 transitions. [2023-01-27 22:32:32,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.22222222222223) internal successors, (1010), 9 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:32,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:32,092 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:32,092 INFO L175 Difference]: Start difference. First operand has 393 places, 1513 transitions, 38592 flow. Second operand 9 states and 1010 transitions. [2023-01-27 22:32:32,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 1594 transitions, 43017 flow [2023-01-27 22:32:35,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1594 transitions, 42351 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 22:32:35,540 INFO L231 Difference]: Finished difference. Result has 396 places, 1514 transitions, 38678 flow [2023-01-27 22:32:35,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=37834, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38678, PETRI_PLACES=396, PETRI_TRANSITIONS=1514} [2023-01-27 22:32:35,541 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2023-01-27 22:32:35,541 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1514 transitions, 38678 flow [2023-01-27 22:32:35,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.05263157894737) internal successors, (2034), 19 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:35,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:32:35,542 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] [2023-01-27 22:32:35,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-01-27 22:32:35,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-01-27 22:32:35,742 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:32:35,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:32:35,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1501599736, now seen corresponding path program 13 times [2023-01-27 22:32:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:32:35,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291960853] [2023-01-27 22:32:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:32:35,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:32:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:32:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:32:35,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:32:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291960853] [2023-01-27 22:32:35,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291960853] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:32:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323310812] [2023-01-27 22:32:35,821 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:32:35,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:32:35,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:32:35,822 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:32:35,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-01-27 22:32:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:32:35,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:32:35,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:32:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:32:36,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:32:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:32:36,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323310812] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:32:36,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:32:36,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-27 22:32:36,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025898010] [2023-01-27 22:32:36,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:32:36,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 22:32:36,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:32:36,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 22:32:36,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-01-27 22:32:36,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 281 [2023-01-27 22:32:36,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1514 transitions, 38678 flow. Second operand has 21 states, 21 states have (on average 107.14285714285714) internal successors, (2250), 21 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:36,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:32:36,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 281 [2023-01-27 22:32:36,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:32:40,404 INFO L130 PetriNetUnfolder]: 7637/11573 cut-off events. [2023-01-27 22:32:40,404 INFO L131 PetriNetUnfolder]: For 435614/435658 co-relation queries the response was YES. [2023-01-27 22:32:40,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141129 conditions, 11573 events. 7637/11573 cut-off events. For 435614/435658 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 69913 event pairs, 679 based on Foata normal form. 67/11621 useless extension candidates. Maximal degree in co-relation 140988. Up to 4317 conditions per place. [2023-01-27 22:32:40,701 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 1214 selfloop transitions, 573 changer transitions 0/1861 dead transitions. [2023-01-27 22:32:40,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1861 transitions, 48932 flow [2023-01-27 22:32:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 22:32:40,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 22:32:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1930 transitions. [2023-01-27 22:32:40,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40401925894913127 [2023-01-27 22:32:40,703 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1930 transitions. [2023-01-27 22:32:40,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1930 transitions. [2023-01-27 22:32:40,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:32:40,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1930 transitions. [2023-01-27 22:32:40,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 113.52941176470588) internal successors, (1930), 17 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:40,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:40,707 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:40,707 INFO L175 Difference]: Start difference. First operand has 396 places, 1514 transitions, 38678 flow. Second operand 17 states and 1930 transitions. [2023-01-27 22:32:40,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1861 transitions, 48932 flow [2023-01-27 22:32:44,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 1861 transitions, 48207 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-01-27 22:32:44,375 INFO L231 Difference]: Finished difference. Result has 404 places, 1508 transitions, 38981 flow [2023-01-27 22:32:44,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=37742, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=569, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=935, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=38981, PETRI_PLACES=404, PETRI_TRANSITIONS=1508} [2023-01-27 22:32:44,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2023-01-27 22:32:44,377 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 1508 transitions, 38981 flow [2023-01-27 22:32:44,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 107.14285714285714) internal successors, (2250), 21 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:32:44,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:32:44,377 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:32:44,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-01-27 22:32:44,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:32:44,583 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:32:44,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:32:44,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2059055636, now seen corresponding path program 21 times [2023-01-27 22:32:44,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:32:44,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941344599] [2023-01-27 22:32:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:32:44,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:32:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:32:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:32:45,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:32:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941344599] [2023-01-27 22:32:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941344599] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:32:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103192046] [2023-01-27 22:32:45,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:32:45,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:32:45,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:32:45,346 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:32:45,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-01-27 22:32:45,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 22:32:45,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:32:45,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-27 22:32:45,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:32:45,719 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 [2023-01-27 22:32:45,773 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 28 treesize of output 23 [2023-01-27 22:32:45,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:32:45,860 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 39 treesize of output 35 [2023-01-27 22:32:46,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:32:46,142 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 52 treesize of output 44 [2023-01-27 22:32:46,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:32:46,244 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 52 treesize of output 44 [2023-01-27 22:32:46,495 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:32:46,495 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 61 treesize of output 43 [2023-01-27 22:32:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:32:47,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:32:58,383 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:32:58,384 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 2 case distinctions, treesize of input 140 treesize of output 86 [2023-01-27 22:32:58,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:32:58,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1336 treesize of output 1162 [2023-01-27 22:32:58,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:32:58,485 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 262 treesize of output 254 [2023-01-27 22:32:58,509 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:32:58,509 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 246 treesize of output 222 [2023-01-27 22:32:58,541 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:32:58,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 107 [2023-01-27 22:38:37,530 WARN L222 SmtUtils]: Spent 5.08m on a formula simplification. DAG size of input: 372 DAG size of output: 140 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:38:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:38:37,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103192046] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:38:37,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:38:37,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 41 [2023-01-27 22:38:37,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473853516] [2023-01-27 22:38:37,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:38:37,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-01-27 22:38:37,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:38:37,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-01-27 22:38:37,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1569, Unknown=32, NotChecked=0, Total=1806 [2023-01-27 22:38:37,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 281 [2023-01-27 22:38:37,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 1508 transitions, 38981 flow. Second operand has 43 states, 43 states have (on average 73.81395348837209) internal successors, (3174), 43 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:38:37,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:38:37,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 281 [2023-01-27 22:38:37,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:38:45,089 WARN L222 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 184 DAG size of output: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:38:53,732 WARN L222 SmtUtils]: Spent 8.32s on a formula simplification. DAG size of input: 143 DAG size of output: 35 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:39:06,216 WARN L222 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 136 DAG size of output: 108 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:39:44,364 WARN L222 SmtUtils]: Spent 32.58s on a formula simplification. DAG size of input: 120 DAG size of output: 90 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:40:22,889 WARN L222 SmtUtils]: Spent 20.64s on a formula simplification. DAG size of input: 134 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:40:31,949 WARN L222 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 144 DAG size of output: 115 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:40:34,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:40:37,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:40:39,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:40:42,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:40:44,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:40:46,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:40:54,804 WARN L222 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 136 DAG size of output: 107 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-01-27 22:41:06,328 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:41:06,329 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:41:06,882 WARN L238 SmtUtils]: Removed 14 from assertion stack [2023-01-27 22:41:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-27 22:41:06,883 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 22:41:06,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-01-27 22:41:07,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:41:07,084 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 123 for 11329ms.. [2023-01-27 22:41:07,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 22:41:07,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 22:41:07,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 22:41:07,086 INFO L445 BasicCegarLoop]: Path program histogram: [21, 13, 6, 6, 1, 1, 1, 1, 1] [2023-01-27 22:41:07,090 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 22:41:07,091 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 22:41:07,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 10:41:07 BasicIcfg [2023-01-27 22:41:07,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 22:41:07,093 INFO L158 Benchmark]: Toolchain (without parser) took 811379.59ms. Allocated memory was 379.6MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 335.7MB in the beginning and 6.9GB in the end (delta: -6.6GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2023-01-27 22:41:07,093 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 379.6MB. Free memory is still 334.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 22:41:07,093 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.62ms. Allocated memory is still 379.6MB. Free memory was 335.4MB in the beginning and 324.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 22:41:07,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.48ms. Allocated memory is still 379.6MB. Free memory was 324.0MB in the beginning and 322.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 22:41:07,094 INFO L158 Benchmark]: Boogie Preprocessor took 24.12ms. Allocated memory is still 379.6MB. Free memory was 322.3MB in the beginning and 320.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:41:07,094 INFO L158 Benchmark]: RCFGBuilder took 531.87ms. Allocated memory is still 379.6MB. Free memory was 320.8MB in the beginning and 304.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-27 22:41:07,094 INFO L158 Benchmark]: TraceAbstraction took 810602.36ms. Allocated memory was 379.6MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 303.6MB in the beginning and 6.9GB in the end (delta: -6.6GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2023-01-27 22:41:07,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 379.6MB. Free memory is still 334.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 188.62ms. Allocated memory is still 379.6MB. Free memory was 335.4MB in the beginning and 324.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.48ms. Allocated memory is still 379.6MB. Free memory was 324.0MB in the beginning and 322.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 24.12ms. Allocated memory is still 379.6MB. Free memory was 322.3MB in the beginning and 320.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 531.87ms. Allocated memory is still 379.6MB. Free memory was 320.8MB in the beginning and 304.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 810602.36ms. Allocated memory was 379.6MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 303.6MB in the beginning and 6.9GB in the end (delta: -6.6GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 136 PlacesBefore, 30 PlacesAfterwards, 138 TransitionsBefore, 24 TransitionsAfterwards, 1728 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 130 TotalNumberOfCompositions, 1910 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1752, independent: 1732, independent conditional: 0, independent unconditional: 1732, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 917, independent: 906, independent conditional: 0, independent unconditional: 906, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1752, independent: 826, independent conditional: 0, independent unconditional: 826, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 917, unknown conditional: 0, unknown unconditional: 917] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 123 for 11329ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 123 for 11329ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 123 for 11329ms.. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 123 for 11329ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 176 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 810.5s, OverallIterations: 51, TraceHistogramMax: 2, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 405.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 112 mSolverCounterUnknown, 6765 SdHoareTripleChecker+Valid, 39.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6765 mSDsluCounter, 1685 SdHoareTripleChecker+Invalid, 37.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 726 IncrementalHoareTripleChecker+Unchecked, 1417 mSDsCounter, 335 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26016 IncrementalHoareTripleChecker+Invalid, 27189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 335 mSolverCounterUnsat, 268 mSDtfsCounter, 26016 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3008 GetRequests, 1612 SyntacticMatches, 94 SemanticMatches, 1301 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 10350 ImplicationChecksByTransitivity, 452.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38981occurred in iteration=50, InterpolantAutomatonStates: 677, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 383.6s InterpolantComputationTime, 2301 NumberOfCodeBlocks, 2275 NumberOfCodeBlocksAsserted, 135 NumberOfCheckSat, 3265 ConstructedInterpolants, 51 QuantifiedInterpolants, 34595 SizeOfPredicates, 390 NumberOfNonLiveVariables, 10100 ConjunctsInSsa, 912 ConjunctsInUnsatCore, 145 InterpolantComputations, 9 PerfectInterpolantSequences, 261/597 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown