/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:31:06,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:31:06,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:31:06,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:31:06,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:31:06,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:31:06,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:31:06,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:31:06,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:31:06,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:31:06,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:31:06,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:31:06,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:31:06,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:31:06,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:31:06,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:31:06,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:31:06,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:31:06,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:31:06,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:31:06,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:31:06,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:31:06,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:31:06,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:31:06,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:31:06,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:31:06,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:31:06,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:31:06,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:31:06,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-01-28 02:31:06,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:31:06,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:31:06,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:31:06,981 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 [2023-01-28 02:31:06,997 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:31:06,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:31:06,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:31:06,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:31:06,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:31:06,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:31:06,999 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:31:07,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:31:07,000 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:31:07,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:31:07,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:31:07,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:31:07,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:31:07,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:31:07,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:31:07,001 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:31:07,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:31:07,001 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:31:07,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:31:07,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:31:07,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:31:07,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:31:07,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:31:07,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:31:07,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:31:07,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:31:07,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:31:07,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:31:07,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:31:07,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:31:07,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:31:07,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:31:07,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:31:07,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:31:07,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:31:07,224 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:31:07,225 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:31:07,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-01-28 02:31:08,250 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:31:08,405 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:31:08,406 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-01-28 02:31:08,410 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbc951ab/1c79a286cd6544cb826dafc56c509bd0/FLAG62cde85dc [2023-01-28 02:31:08,804 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbc951ab/1c79a286cd6544cb826dafc56c509bd0 [2023-01-28 02:31:08,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:31:08,807 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:31:08,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:31:08,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:31:08,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:31:08,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:08,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f1a484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08, skipping insertion in model container [2023-01-28 02:31:08,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:08,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:31:08,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:31:08,927 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/chl-array-int-trans.wvr.c[2728,2741] [2023-01-28 02:31:08,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:31:08,938 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:31:08,953 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/chl-array-int-trans.wvr.c[2728,2741] [2023-01-28 02:31:08,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:31:08,965 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:31:08,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08 WrapperNode [2023-01-28 02:31:08,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:31:08,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:31:08,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:31:08,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:31:08,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:08,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:08,993 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 283 [2023-01-28 02:31:08,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:31:08,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:31:08,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:31:08,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:31:08,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:08,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:09,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:09,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:09,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:09,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:09,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:09,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:09,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:31:09,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:31:09,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:31:09,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:31:09,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (1/1) ... [2023-01-28 02:31:09,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:31:09,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:09,058 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) [2023-01-28 02:31:09,072 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 [2023-01-28 02:31:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:31:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:31:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:31:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:31:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:31:09,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:31:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:31:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:31:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 02:31:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 02:31:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:31:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:31:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:31:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:31:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:31:09,096 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:31:09,172 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:31:09,174 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:31:09,479 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:31:09,489 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:31:09,489 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 02:31:09,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:31:09 BoogieIcfgContainer [2023-01-28 02:31:09,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:31:09,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:31:09,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:31:09,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:31:09,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:31:08" (1/3) ... [2023-01-28 02:31:09,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b68cdef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:31:09, skipping insertion in model container [2023-01-28 02:31:09,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:31:08" (2/3) ... [2023-01-28 02:31:09,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b68cdef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:31:09, skipping insertion in model container [2023-01-28 02:31:09,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:31:09" (3/3) ... [2023-01-28 02:31:09,508 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-01-28 02:31:09,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:31:09,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:31:09,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:31:09,665 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 02:31:09,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 318 transitions, 660 flow [2023-01-28 02:31:09,795 INFO L130 PetriNetUnfolder]: 28/315 cut-off events. [2023-01-28 02:31:09,796 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:31:09,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 315 events. 28/315 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 504 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-01-28 02:31:09,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 318 transitions, 660 flow [2023-01-28 02:31:09,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 305 transitions, 628 flow [2023-01-28 02:31:09,815 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:31:09,821 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 305 transitions, 628 flow [2023-01-28 02:31:09,822 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 305 transitions, 628 flow [2023-01-28 02:31:09,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 305 transitions, 628 flow [2023-01-28 02:31:09,865 INFO L130 PetriNetUnfolder]: 28/305 cut-off events. [2023-01-28 02:31:09,866 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:31:09,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 305 events. 28/305 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 503 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-01-28 02:31:09,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-01-28 02:31:16,895 INFO L134 LiptonReduction]: Checked pairs total: 16298 [2023-01-28 02:31:16,895 INFO L136 LiptonReduction]: Total number of compositions: 336 [2023-01-28 02:31:16,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:31:16,915 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;@eee5a86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:31:16,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 02:31:16,920 INFO L130 PetriNetUnfolder]: 8/35 cut-off events. [2023-01-28 02:31:16,921 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:31:16,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:16,921 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] [2023-01-28 02:31:16,921 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)] === [2023-01-28 02:31:16,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:16,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1381309772, now seen corresponding path program 1 times [2023-01-28 02:31:16,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:16,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827757351] [2023-01-28 02:31:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:17,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:17,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827757351] [2023-01-28 02:31:17,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827757351] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:17,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:17,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:31:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039688377] [2023-01-28 02:31:17,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:17,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:31:17,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:17,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:31:17,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:31:17,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 654 [2023-01-28 02:31:17,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 245.4) internal successors, (1227), 5 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:17,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:17,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 654 [2023-01-28 02:31:17,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:17,764 INFO L130 PetriNetUnfolder]: 1848/2604 cut-off events. [2023-01-28 02:31:17,764 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-01-28 02:31:17,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 2604 events. 1848/2604 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10381 event pairs, 646 based on Foata normal form. 1/1980 useless extension candidates. Maximal degree in co-relation 2528. Up to 1171 conditions per place. [2023-01-28 02:31:17,775 INFO L137 encePairwiseOnDemand]: 647/654 looper letters, 92 selfloop transitions, 6 changer transitions 4/102 dead transitions. [2023-01-28 02:31:17,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 102 transitions, 462 flow [2023-01-28 02:31:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:31:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:31:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1549 transitions. [2023-01-28 02:31:17,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39475025484199794 [2023-01-28 02:31:17,788 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1549 transitions. [2023-01-28 02:31:17,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1549 transitions. [2023-01-28 02:31:17,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:17,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1549 transitions. [2023-01-28 02:31:17,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.1666666666667) internal successors, (1549), 6 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:17,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 654.0) internal successors, (4578), 7 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:17,811 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 654.0) internal successors, (4578), 7 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:17,812 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 90 flow. Second operand 6 states and 1549 transitions. [2023-01-28 02:31:17,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 102 transitions, 462 flow [2023-01-28 02:31:17,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 102 transitions, 426 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 02:31:17,817 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 117 flow [2023-01-28 02:31:17,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-01-28 02:31:17,820 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2023-01-28 02:31:17,820 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 117 flow [2023-01-28 02:31:17,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.4) internal successors, (1227), 5 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:17,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:17,821 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] [2023-01-28 02:31:17,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:31:17,822 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)] === [2023-01-28 02:31:17,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1395278390, now seen corresponding path program 1 times [2023-01-28 02:31:17,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:17,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509658076] [2023-01-28 02:31:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:17,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:18,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:18,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509658076] [2023-01-28 02:31:18,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509658076] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:18,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278552218] [2023-01-28 02:31:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:18,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:18,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:18,058 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) [2023-01-28 02:31:18,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:31:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:18,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 02:31:18,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:18,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:18,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278552218] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:18,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:31:18,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 13 [2023-01-28 02:31:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581949720] [2023-01-28 02:31:18,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:18,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:31:18,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:18,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:31:18,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-01-28 02:31:18,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 654 [2023-01-28 02:31:18,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:18,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:18,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 654 [2023-01-28 02:31:18,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:18,930 INFO L130 PetriNetUnfolder]: 3853/5458 cut-off events. [2023-01-28 02:31:18,930 INFO L131 PetriNetUnfolder]: For 392/392 co-relation queries the response was YES. [2023-01-28 02:31:18,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11824 conditions, 5458 events. 3853/5458 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 26177 event pairs, 744 based on Foata normal form. 1/4159 useless extension candidates. Maximal degree in co-relation 5912. Up to 2332 conditions per place. [2023-01-28 02:31:18,961 INFO L137 encePairwiseOnDemand]: 644/654 looper letters, 141 selfloop transitions, 11 changer transitions 8/160 dead transitions. [2023-01-28 02:31:18,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 160 transitions, 748 flow [2023-01-28 02:31:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:31:18,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:31:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2565 transitions. [2023-01-28 02:31:18,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922018348623853 [2023-01-28 02:31:18,968 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2565 transitions. [2023-01-28 02:31:18,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2565 transitions. [2023-01-28 02:31:18,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:18,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2565 transitions. [2023-01-28 02:31:18,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 256.5) internal successors, (2565), 10 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:18,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:18,989 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:18,989 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 117 flow. Second operand 10 states and 2565 transitions. [2023-01-28 02:31:18,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 160 transitions, 748 flow [2023-01-28 02:31:18,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 160 transitions, 739 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 02:31:18,995 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 196 flow [2023-01-28 02:31:18,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-01-28 02:31:18,996 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-01-28 02:31:18,996 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 196 flow [2023-01-28 02:31:18,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:18,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:18,997 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] [2023-01-28 02:31:19,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 02:31:19,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:19,204 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)] === [2023-01-28 02:31:19,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1072286339, now seen corresponding path program 1 times [2023-01-28 02:31:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:19,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084095979] [2023-01-28 02:31:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:19,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:19,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:19,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084095979] [2023-01-28 02:31:19,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084095979] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:19,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497657175] [2023-01-28 02:31:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:19,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:19,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:19,489 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) [2023-01-28 02:31:19,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:31:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:19,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 02:31:19,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:19,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:19,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497657175] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:19,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:31:19,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-01-28 02:31:19,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390402941] [2023-01-28 02:31:19,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:19,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:31:19,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:19,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:31:19,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-01-28 02:31:19,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 654 [2023-01-28 02:31:19,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 240.42857142857142) internal successors, (1683), 7 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:19,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:19,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 654 [2023-01-28 02:31:19,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:20,617 INFO L130 PetriNetUnfolder]: 5619/8120 cut-off events. [2023-01-28 02:31:20,617 INFO L131 PetriNetUnfolder]: For 902/902 co-relation queries the response was YES. [2023-01-28 02:31:20,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18141 conditions, 8120 events. 5619/8120 cut-off events. For 902/902 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 42062 event pairs, 1656 based on Foata normal form. 0/6236 useless extension candidates. Maximal degree in co-relation 11716. Up to 2674 conditions per place. [2023-01-28 02:31:20,645 INFO L137 encePairwiseOnDemand]: 644/654 looper letters, 161 selfloop transitions, 17 changer transitions 2/180 dead transitions. [2023-01-28 02:31:20,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 180 transitions, 910 flow [2023-01-28 02:31:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:31:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:31:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2539 transitions. [2023-01-28 02:31:20,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882262996941896 [2023-01-28 02:31:20,651 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2539 transitions. [2023-01-28 02:31:20,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2539 transitions. [2023-01-28 02:31:20,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:20,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2539 transitions. [2023-01-28 02:31:20,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 253.9) internal successors, (2539), 10 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:20,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:20,665 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:20,665 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 196 flow. Second operand 10 states and 2539 transitions. [2023-01-28 02:31:20,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 180 transitions, 910 flow [2023-01-28 02:31:20,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 180 transitions, 909 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:31:20,671 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 266 flow [2023-01-28 02:31:20,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-01-28 02:31:20,672 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2023-01-28 02:31:20,673 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 266 flow [2023-01-28 02:31:20,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.42857142857142) internal successors, (1683), 7 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:20,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:20,673 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, 1] [2023-01-28 02:31:20,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 02:31:20,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-28 02:31:20,879 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)] === [2023-01-28 02:31:20,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:20,879 INFO L85 PathProgramCache]: Analyzing trace with hash -885160629, now seen corresponding path program 1 times [2023-01-28 02:31:20,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:20,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443320456] [2023-01-28 02:31:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:20,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:31:21,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:21,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443320456] [2023-01-28 02:31:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443320456] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:21,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:21,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 02:31:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872873808] [2023-01-28 02:31:21,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:21,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:31:21,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:21,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:31:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:31:21,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 654 [2023-01-28 02:31:21,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:21,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 654 [2023-01-28 02:31:21,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:21,444 INFO L130 PetriNetUnfolder]: 3495/5132 cut-off events. [2023-01-28 02:31:21,444 INFO L131 PetriNetUnfolder]: For 1807/1807 co-relation queries the response was YES. [2023-01-28 02:31:21,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12286 conditions, 5132 events. 3495/5132 cut-off events. For 1807/1807 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 24773 event pairs, 1802 based on Foata normal form. 0/4432 useless extension candidates. Maximal degree in co-relation 7166. Up to 3137 conditions per place. [2023-01-28 02:31:21,464 INFO L137 encePairwiseOnDemand]: 649/654 looper letters, 42 selfloop transitions, 4 changer transitions 51/97 dead transitions. [2023-01-28 02:31:21,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 97 transitions, 572 flow [2023-01-28 02:31:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:31:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:31:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1294 transitions. [2023-01-28 02:31:21,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39571865443425075 [2023-01-28 02:31:21,467 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1294 transitions. [2023-01-28 02:31:21,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1294 transitions. [2023-01-28 02:31:21,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:21,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1294 transitions. [2023-01-28 02:31:21,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 258.8) internal successors, (1294), 5 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,473 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,473 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 266 flow. Second operand 5 states and 1294 transitions. [2023-01-28 02:31:21,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 97 transitions, 572 flow [2023-01-28 02:31:21,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 558 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 02:31:21,483 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 195 flow [2023-01-28 02:31:21,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-01-28 02:31:21,486 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-01-28 02:31:21,486 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 195 flow [2023-01-28 02:31:21,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:21,486 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, 1, 1] [2023-01-28 02:31:21,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 02:31:21,487 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)] === [2023-01-28 02:31:21,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:21,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1196564902, now seen corresponding path program 1 times [2023-01-28 02:31:21,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:21,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941072972] [2023-01-28 02:31:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:21,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:21,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:21,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941072972] [2023-01-28 02:31:21,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941072972] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:31:21,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:31:21,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:31:21,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659373161] [2023-01-28 02:31:21,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:21,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:31:21,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:21,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:31:21,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:31:21,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 654 [2023-01-28 02:31:21,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:21,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 654 [2023-01-28 02:31:21,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:21,855 INFO L130 PetriNetUnfolder]: 1573/2264 cut-off events. [2023-01-28 02:31:21,855 INFO L131 PetriNetUnfolder]: For 998/998 co-relation queries the response was YES. [2023-01-28 02:31:21,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5468 conditions, 2264 events. 1573/2264 cut-off events. For 998/998 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8876 event pairs, 882 based on Foata normal form. 50/2032 useless extension candidates. Maximal degree in co-relation 5448. Up to 1658 conditions per place. [2023-01-28 02:31:21,863 INFO L137 encePairwiseOnDemand]: 649/654 looper letters, 37 selfloop transitions, 2 changer transitions 44/83 dead transitions. [2023-01-28 02:31:21,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 452 flow [2023-01-28 02:31:21,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:31:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:31:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1296 transitions. [2023-01-28 02:31:21,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963302752293578 [2023-01-28 02:31:21,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1296 transitions. [2023-01-28 02:31:21,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1296 transitions. [2023-01-28 02:31:21,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:21,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1296 transitions. [2023-01-28 02:31:21,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,872 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,872 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 195 flow. Second operand 5 states and 1296 transitions. [2023-01-28 02:31:21,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 452 flow [2023-01-28 02:31:21,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 403 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-01-28 02:31:21,874 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 126 flow [2023-01-28 02:31:21,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-01-28 02:31:21,876 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-01-28 02:31:21,876 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 126 flow [2023-01-28 02:31:21,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:21,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:21,877 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, 1, 1] [2023-01-28 02:31:21,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 02:31:21,877 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)] === [2023-01-28 02:31:21,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:21,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1703835318, now seen corresponding path program 1 times [2023-01-28 02:31:21,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:21,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422531879] [2023-01-28 02:31:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:21,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:31:22,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:22,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422531879] [2023-01-28 02:31:22,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422531879] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:22,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295681112] [2023-01-28 02:31:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:22,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:22,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:22,120 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) [2023-01-28 02:31:22,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 02:31:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:22,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 02:31:22,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:22,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:22,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295681112] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:22,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:22,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16 [2023-01-28 02:31:22,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594321522] [2023-01-28 02:31:22,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:22,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 02:31:22,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:22,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 02:31:22,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-01-28 02:31:22,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 654 [2023-01-28 02:31:22,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 126 flow. Second operand has 18 states, 18 states have (on average 232.33333333333334) internal successors, (4182), 18 states have internal predecessors, (4182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:22,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:22,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 654 [2023-01-28 02:31:22,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:23,628 INFO L130 PetriNetUnfolder]: 5562/8013 cut-off events. [2023-01-28 02:31:23,628 INFO L131 PetriNetUnfolder]: For 2569/2569 co-relation queries the response was YES. [2023-01-28 02:31:23,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18100 conditions, 8013 events. 5562/8013 cut-off events. For 2569/2569 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 40995 event pairs, 1689 based on Foata normal form. 6/6885 useless extension candidates. Maximal degree in co-relation 18083. Up to 1524 conditions per place. [2023-01-28 02:31:23,646 INFO L137 encePairwiseOnDemand]: 642/654 looper letters, 137 selfloop transitions, 16 changer transitions 163/316 dead transitions. [2023-01-28 02:31:23,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 316 transitions, 1483 flow [2023-01-28 02:31:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-28 02:31:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-28 02:31:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6042 transitions. [2023-01-28 02:31:23,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36954128440366973 [2023-01-28 02:31:23,657 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6042 transitions. [2023-01-28 02:31:23,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6042 transitions. [2023-01-28 02:31:23,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:23,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6042 transitions. [2023-01-28 02:31:23,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 241.68) internal successors, (6042), 25 states have internal predecessors, (6042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 654.0) internal successors, (17004), 26 states have internal predecessors, (17004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,691 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 654.0) internal successors, (17004), 26 states have internal predecessors, (17004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,692 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 126 flow. Second operand 25 states and 6042 transitions. [2023-01-28 02:31:23,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 316 transitions, 1483 flow [2023-01-28 02:31:23,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 316 transitions, 1444 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-28 02:31:23,695 INFO L231 Difference]: Finished difference. Result has 78 places, 52 transitions, 240 flow [2023-01-28 02:31:23,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=240, PETRI_PLACES=78, PETRI_TRANSITIONS=52} [2023-01-28 02:31:23,697 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2023-01-28 02:31:23,697 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 52 transitions, 240 flow [2023-01-28 02:31:23,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.33333333333334) internal successors, (4182), 18 states have internal predecessors, (4182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:23,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:23,698 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, 1, 1, 1, 1] [2023-01-28 02:31:23,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:23,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:23,903 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)] === [2023-01-28 02:31:23,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:23,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1693095200, now seen corresponding path program 1 times [2023-01-28 02:31:23,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:23,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592197220] [2023-01-28 02:31:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:24,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:24,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592197220] [2023-01-28 02:31:24,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592197220] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:24,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455963816] [2023-01-28 02:31:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:24,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:24,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:24,109 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) [2023-01-28 02:31:24,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 02:31:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:24,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 02:31:24,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:24,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:24,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455963816] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:24,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:31:24,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 14 [2023-01-28 02:31:24,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070711853] [2023-01-28 02:31:24,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:31:24,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:31:24,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:24,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:31:24,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:31:24,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 654 [2023-01-28 02:31:24,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 52 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:24,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:24,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 654 [2023-01-28 02:31:24,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:24,856 INFO L130 PetriNetUnfolder]: 4352/6331 cut-off events. [2023-01-28 02:31:24,856 INFO L131 PetriNetUnfolder]: For 13601/13601 co-relation queries the response was YES. [2023-01-28 02:31:24,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19251 conditions, 6331 events. 4352/6331 cut-off events. For 13601/13601 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 31465 event pairs, 1173 based on Foata normal form. 0/5874 useless extension candidates. Maximal degree in co-relation 16152. Up to 4090 conditions per place. [2023-01-28 02:31:24,882 INFO L137 encePairwiseOnDemand]: 646/654 looper letters, 65 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2023-01-28 02:31:24,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 505 flow [2023-01-28 02:31:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:31:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:31:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1718 transitions. [2023-01-28 02:31:24,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37527304499781566 [2023-01-28 02:31:24,886 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1718 transitions. [2023-01-28 02:31:24,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1718 transitions. [2023-01-28 02:31:24,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:24,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1718 transitions. [2023-01-28 02:31:24,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.42857142857142) internal successors, (1718), 7 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:24,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 654.0) internal successors, (5232), 8 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:24,892 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 654.0) internal successors, (5232), 8 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:24,892 INFO L175 Difference]: Start difference. First operand has 78 places, 52 transitions, 240 flow. Second operand 7 states and 1718 transitions. [2023-01-28 02:31:24,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 505 flow [2023-01-28 02:31:24,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 451 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-01-28 02:31:24,922 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 240 flow [2023-01-28 02:31:24,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2023-01-28 02:31:24,923 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-01-28 02:31:24,923 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 240 flow [2023-01-28 02:31:24,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:24,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:24,923 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, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:24,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:25,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:25,129 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)] === [2023-01-28 02:31:25,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash 975190112, now seen corresponding path program 1 times [2023-01-28 02:31:25,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:25,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031621385] [2023-01-28 02:31:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:31:25,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:25,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031621385] [2023-01-28 02:31:25,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031621385] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:25,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508296760] [2023-01-28 02:31:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:25,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:25,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:25,368 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) [2023-01-28 02:31:25,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 02:31:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:25,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 02:31:25,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:31:25,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:31:25,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508296760] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:31:25,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:31:25,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 02:31:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070758002] [2023-01-28 02:31:25,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:31:25,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 02:31:25,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:31:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 02:31:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:31:25,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 654 [2023-01-28 02:31:25,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 240 flow. Second operand has 14 states, 14 states have (on average 244.28571428571428) internal successors, (3420), 14 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:25,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:31:25,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 654 [2023-01-28 02:31:25,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:31:26,826 INFO L130 PetriNetUnfolder]: 10150/14755 cut-off events. [2023-01-28 02:31:26,827 INFO L131 PetriNetUnfolder]: For 13466/13466 co-relation queries the response was YES. [2023-01-28 02:31:26,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41872 conditions, 14755 events. 10150/14755 cut-off events. For 13466/13466 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 82381 event pairs, 4193 based on Foata normal form. 6/14759 useless extension candidates. Maximal degree in co-relation 29773. Up to 5684 conditions per place. [2023-01-28 02:31:26,911 INFO L137 encePairwiseOnDemand]: 645/654 looper letters, 167 selfloop transitions, 18 changer transitions 8/193 dead transitions. [2023-01-28 02:31:26,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 193 transitions, 1189 flow [2023-01-28 02:31:26,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:31:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:31:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3047 transitions. [2023-01-28 02:31:26,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38825178389398574 [2023-01-28 02:31:26,918 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3047 transitions. [2023-01-28 02:31:26,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3047 transitions. [2023-01-28 02:31:26,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:26,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3047 transitions. [2023-01-28 02:31:26,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 253.91666666666666) internal successors, (3047), 12 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:26,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 654.0) internal successors, (8502), 13 states have internal predecessors, (8502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:26,930 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 654.0) internal successors, (8502), 13 states have internal predecessors, (8502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:26,931 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 240 flow. Second operand 12 states and 3047 transitions. [2023-01-28 02:31:26,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 193 transitions, 1189 flow [2023-01-28 02:31:26,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 193 transitions, 1166 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 02:31:26,941 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 375 flow [2023-01-28 02:31:26,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=375, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2023-01-28 02:31:26,942 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 44 predicate places. [2023-01-28 02:31:26,942 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 375 flow [2023-01-28 02:31:26,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 244.28571428571428) internal successors, (3420), 14 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:26,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:26,943 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, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:31:26,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 02:31:27,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:27,149 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)] === [2023-01-28 02:31:27,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash 241561077, now seen corresponding path program 1 times [2023-01-28 02:31:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:27,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204327093] [2023-01-28 02:31:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:27,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:28,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:28,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204327093] [2023-01-28 02:31:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204327093] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:28,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484322409] [2023-01-28 02:31:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:28,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:28,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:28,081 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) [2023-01-28 02:31:28,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 02:31:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:28,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 62 conjunts are in the unsatisfiable core [2023-01-28 02:31:28,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:28,349 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 [2023-01-28 02:31:28,418 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 [2023-01-28 02:31:28,511 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 [2023-01-28 02:31:28,590 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 [2023-01-28 02:31:28,951 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-28 02:31:28,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 40 [2023-01-28 02:31:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:31:28,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:31:29,781 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork1_~i~0#1| 4))) (let ((.cse2 (+ .cse10 c_~a1~0.offset)) (.cse4 (+ .cse10 c_~a2~0.offset))) (let ((.cse0 (forall ((v_ArrVal_427 (Array Int Int)) (~a1~0.base Int) (~a2~0.base Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse9 (select .cse8 ~a2~0.base))) (or (< (select (select .cse8 ~a1~0.base) .cse2) (+ (select .cse9 .cse4) 1)) (< (select .cse9 c_~a2~0.offset) (+ (select (select .cse8 c_~a3~0.base) c_~a3~0.offset) 1)))))))) (and (or (< 0 c_~n1~0) .cse0) (or .cse0 (< 0 c_~n3~0)) (forall ((v_ArrVal_427 (Array Int Int)) (~a2~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse3 (select .cse7 ~a2~0.base)) (.cse6 (select (select .cse7 c_~a3~0.base) c_~a3~0.offset))) (or (forall ((~a1~0.base Int)) (let ((.cse1 (select .cse7 ~a1~0.base))) (let ((.cse5 (select .cse1 c_~a1~0.offset))) (or (< (select .cse1 .cse2) (+ (select .cse3 .cse4) 1)) (< (+ .cse5 2147483648) .cse6) (< .cse6 .cse5) (= .cse5 .cse6))))) (< (select .cse3 c_~a2~0.offset) (+ .cse6 1)))))))))) is different from false [2023-01-28 02:31:29,915 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork1_~i~0#1| 4))) (let ((.cse3 (+ .cse10 c_~a1~0.offset)) (.cse5 (+ .cse10 c_~a2~0.offset))) (let ((.cse7 (forall ((v_ArrVal_427 (Array Int Int)) (v_ArrVal_426 (Array Int Int)) (~a1~0.base Int) (~a2~0.base Int)) (let ((.cse8 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_426) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse9 (select .cse8 ~a2~0.base))) (or (< (select (select .cse8 ~a1~0.base) .cse3) (+ (select .cse9 .cse5) 1)) (< (select .cse9 c_~a2~0.offset) (+ (select (select .cse8 c_~a3~0.base) c_~a3~0.offset) 1)))))))) (and (forall ((v_ArrVal_427 (Array Int Int)) (v_ArrVal_426 (Array Int Int)) (~a2~0.base Int)) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_426) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse4 (select .cse6 ~a2~0.base)) (.cse0 (select (select .cse6 c_~a3~0.base) c_~a3~0.offset))) (or (forall ((~a1~0.base Int)) (let ((.cse2 (select .cse6 ~a1~0.base))) (let ((.cse1 (select .cse2 c_~a1~0.offset))) (or (< .cse0 .cse1) (< (+ .cse1 2147483648) .cse0) (< (select .cse2 .cse3) (+ (select .cse4 .cse5) 1)) (= .cse1 .cse0))))) (< (select .cse4 c_~a2~0.offset) (+ .cse0 1)))))) (or .cse7 (< 0 c_~n3~0)) (or .cse7 (< 0 c_~n1~0)))))) is different from false [2023-01-28 02:31:30,138 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 75 [2023-01-28 02:31:30,175 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-01-28 02:31:30,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4971 treesize of output 4736 [2023-01-28 02:31:30,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,347 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 2347 treesize of output 2115 [2023-01-28 02:31:30,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,392 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 2091 treesize of output 1987 [2023-01-28 02:31:30,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:31:30,440 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 1963 treesize of output 1923 [2023-01-28 02:32:30,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:30,212 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 111 treesize of output 75 [2023-01-28 02:32:30,266 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-01-28 02:32:30,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29931 treesize of output 28416 [2023-01-28 02:32:30,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:30,619 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 2347 treesize of output 2115 [2023-01-28 02:32:30,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:30,687 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 2091 treesize of output 2051 [2023-01-28 02:32:30,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:32:30,737 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 2027 treesize of output 1923 [2023-01-28 02:34:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:34:32,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484322409] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:34:32,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:34:32,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 41 [2023-01-28 02:34:32,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400485439] [2023-01-28 02:34:32,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:34:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-01-28 02:34:32,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-01-28 02:34:32,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1420, Unknown=16, NotChecked=158, Total=1806 [2023-01-28 02:34:33,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 654 [2023-01-28 02:34:33,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 375 flow. Second operand has 43 states, 43 states have (on average 183.06976744186048) internal successors, (7872), 43 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:33,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:33,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 654 [2023-01-28 02:34:33,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:39,392 INFO L130 PetriNetUnfolder]: 22407/33056 cut-off events. [2023-01-28 02:34:39,392 INFO L131 PetriNetUnfolder]: For 23840/23840 co-relation queries the response was YES. [2023-01-28 02:34:39,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91731 conditions, 33056 events. 22407/33056 cut-off events. For 23840/23840 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 215167 event pairs, 5202 based on Foata normal form. 14/33070 useless extension candidates. Maximal degree in co-relation 65222. Up to 13419 conditions per place. [2023-01-28 02:34:39,529 INFO L137 encePairwiseOnDemand]: 635/654 looper letters, 214 selfloop transitions, 64 changer transitions 28/306 dead transitions. [2023-01-28 02:34:39,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 306 transitions, 1830 flow [2023-01-28 02:34:39,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-28 02:34:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-28 02:34:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5130 transitions. [2023-01-28 02:34:39,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.290519877675841 [2023-01-28 02:34:39,540 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5130 transitions. [2023-01-28 02:34:39,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5130 transitions. [2023-01-28 02:34:39,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:39,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5130 transitions. [2023-01-28 02:34:39,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 190.0) internal successors, (5130), 27 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:39,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 654.0) internal successors, (18312), 28 states have internal predecessors, (18312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:39,566 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 654.0) internal successors, (18312), 28 states have internal predecessors, (18312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:39,567 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 375 flow. Second operand 27 states and 5130 transitions. [2023-01-28 02:34:39,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 306 transitions, 1830 flow [2023-01-28 02:34:39,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 306 transitions, 1817 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 02:34:39,588 INFO L231 Difference]: Finished difference. Result has 122 places, 115 transitions, 845 flow [2023-01-28 02:34:39,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=845, PETRI_PLACES=122, PETRI_TRANSITIONS=115} [2023-01-28 02:34:39,589 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2023-01-28 02:34:39,589 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 115 transitions, 845 flow [2023-01-28 02:34:39,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 183.06976744186048) internal successors, (7872), 43 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:39,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:39,591 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, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:34:39,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 02:34:39,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:39,795 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)] === [2023-01-28 02:34:39,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1846702689, now seen corresponding path program 2 times [2023-01-28 02:34:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:39,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717296728] [2023-01-28 02:34:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:39,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:34:40,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717296728] [2023-01-28 02:34:40,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717296728] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391584702] [2023-01-28 02:34:40,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:34:40,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:40,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:40,673 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) [2023-01-28 02:34:40,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 02:34:40,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:34:40,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:40,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 02:34:40,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:41,364 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-28 02:34:41,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 40 [2023-01-28 02:34:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:34:41,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:34:41,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391584702] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:34:41,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:34:41,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 28 [2023-01-28 02:34:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187878229] [2023-01-28 02:34:41,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:34:41,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 02:34:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 02:34:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2023-01-28 02:34:41,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 654 [2023-01-28 02:34:41,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 115 transitions, 845 flow. Second operand has 16 states, 16 states have (on average 220.9375) internal successors, (3535), 16 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:41,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:41,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 654 [2023-01-28 02:34:41,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:46,806 INFO L130 PetriNetUnfolder]: 27720/41392 cut-off events. [2023-01-28 02:34:46,806 INFO L131 PetriNetUnfolder]: For 150331/150331 co-relation queries the response was YES. [2023-01-28 02:34:46,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167274 conditions, 41392 events. 27720/41392 cut-off events. For 150331/150331 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 288638 event pairs, 7145 based on Foata normal form. 7/41399 useless extension candidates. Maximal degree in co-relation 166493. Up to 13495 conditions per place. [2023-01-28 02:34:47,107 INFO L137 encePairwiseOnDemand]: 637/654 looper letters, 227 selfloop transitions, 33 changer transitions 14/274 dead transitions. [2023-01-28 02:34:47,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 274 transitions, 2378 flow [2023-01-28 02:34:47,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:34:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:34:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3010 transitions. [2023-01-28 02:34:47,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35403434486003293 [2023-01-28 02:34:47,111 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3010 transitions. [2023-01-28 02:34:47,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3010 transitions. [2023-01-28 02:34:47,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:47,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3010 transitions. [2023-01-28 02:34:47,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 231.53846153846155) internal successors, (3010), 13 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:47,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:47,120 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:47,120 INFO L175 Difference]: Start difference. First operand has 122 places, 115 transitions, 845 flow. Second operand 13 states and 3010 transitions. [2023-01-28 02:34:47,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 274 transitions, 2378 flow [2023-01-28 02:34:47,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 274 transitions, 2222 flow, removed 68 selfloop flow, removed 9 redundant places. [2023-01-28 02:34:47,615 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 1047 flow [2023-01-28 02:34:47,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1047, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2023-01-28 02:34:47,616 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-01-28 02:34:47,616 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 1047 flow [2023-01-28 02:34:47,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 220.9375) internal successors, (3535), 16 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:47,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:34:47,617 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, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:34:47,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 02:34:47,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:47,823 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)] === [2023-01-28 02:34:47,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:34:47,824 INFO L85 PathProgramCache]: Analyzing trace with hash 801462021, now seen corresponding path program 3 times [2023-01-28 02:34:47,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:34:47,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944460252] [2023-01-28 02:34:47,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:34:47,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:34:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:34:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:34:48,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:34:48,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944460252] [2023-01-28 02:34:48,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944460252] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:34:48,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239151200] [2023-01-28 02:34:48,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:34:48,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:34:48,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:34:48,625 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) [2023-01-28 02:34:48,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 02:34:48,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 02:34:48,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:34:48,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-28 02:34:48,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:34:49,477 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-28 02:34:49,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 40 [2023-01-28 02:34:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:34:49,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:34:49,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239151200] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:34:49,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:34:49,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 28 [2023-01-28 02:34:49,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199648559] [2023-01-28 02:34:49,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:34:49,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 02:34:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:34:49,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 02:34:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2023-01-28 02:34:49,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 654 [2023-01-28 02:34:49,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 1047 flow. Second operand has 16 states, 16 states have (on average 220.9375) internal successors, (3535), 16 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:49,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:34:49,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 654 [2023-01-28 02:34:49,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:34:56,721 INFO L130 PetriNetUnfolder]: 37219/55811 cut-off events. [2023-01-28 02:34:56,721 INFO L131 PetriNetUnfolder]: For 288919/288919 co-relation queries the response was YES. [2023-01-28 02:34:56,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257529 conditions, 55811 events. 37219/55811 cut-off events. For 288919/288919 co-relation queries the response was YES. Maximal size of possible extension queue 2086. Compared 409290 event pairs, 10693 based on Foata normal form. 7/55818 useless extension candidates. Maximal degree in co-relation 256402. Up to 25171 conditions per place. [2023-01-28 02:34:57,152 INFO L137 encePairwiseOnDemand]: 639/654 looper letters, 266 selfloop transitions, 44 changer transitions 12/322 dead transitions. [2023-01-28 02:34:57,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 322 transitions, 3162 flow [2023-01-28 02:34:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:34:57,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:34:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3001 transitions. [2023-01-28 02:34:57,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35297577040696304 [2023-01-28 02:34:57,155 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3001 transitions. [2023-01-28 02:34:57,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3001 transitions. [2023-01-28 02:34:57,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:34:57,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3001 transitions. [2023-01-28 02:34:57,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 230.84615384615384) internal successors, (3001), 13 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:57,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:57,163 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:34:57,163 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 1047 flow. Second operand 13 states and 3001 transitions. [2023-01-28 02:34:57,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 322 transitions, 3162 flow [2023-01-28 02:35:00,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 322 transitions, 3056 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-01-28 02:35:00,945 INFO L231 Difference]: Finished difference. Result has 145 places, 157 transitions, 1429 flow [2023-01-28 02:35:00,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1429, PETRI_PLACES=145, PETRI_TRANSITIONS=157} [2023-01-28 02:35:00,945 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 107 predicate places. [2023-01-28 02:35:00,945 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 157 transitions, 1429 flow [2023-01-28 02:35:00,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 220.9375) internal successors, (3535), 16 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:00,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:35:00,946 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, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:35:00,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 02:35:01,150 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,SelfDestructingSolverStorable10 [2023-01-28 02:35:01,150 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)] === [2023-01-28 02:35:01,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:35:01,151 INFO L85 PathProgramCache]: Analyzing trace with hash 785158062, now seen corresponding path program 1 times [2023-01-28 02:35:01,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:35:01,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873444396] [2023-01-28 02:35:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:01,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:35:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:35:01,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:35:01,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873444396] [2023-01-28 02:35:01,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873444396] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:35:01,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434565515] [2023-01-28 02:35:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:35:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:35:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:35:01,873 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) [2023-01-28 02:35:01,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 02:35:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:35:01,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 68 conjunts are in the unsatisfiable core [2023-01-28 02:35:01,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:35:02,192 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 [2023-01-28 02:35:02,244 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 [2023-01-28 02:35:02,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 02:35:02,350 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 [2023-01-28 02:35:02,894 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-28 02:35:02,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 64 [2023-01-28 02:35:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:35:02,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:35:03,985 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:35:03,985 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 109 treesize of output 73 [2023-01-28 02:35:04,016 INFO L321 Elim1Store]: treesize reduction 8, result has 76.5 percent of original size [2023-01-28 02:35:04,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 9451 treesize of output 8964 [2023-01-28 02:35:04,326 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:35:04,327 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 2219 treesize of output 2179 [2023-01-28 02:35:04,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:35:04,387 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 2155 treesize of output 2051 [2023-01-28 02:35:04,471 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:35:04,471 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 2027 treesize of output 1795 [2023-01-28 02:35:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:35:35,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434565515] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:35:35,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:35:35,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 46 [2023-01-28 02:35:35,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793944269] [2023-01-28 02:35:35,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:35:35,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-01-28 02:35:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:35:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-01-28 02:35:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1849, Unknown=8, NotChecked=0, Total=2256 [2023-01-28 02:35:35,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 654 [2023-01-28 02:35:35,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 157 transitions, 1429 flow. Second operand has 48 states, 48 states have (on average 182.875) internal successors, (8778), 48 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:35,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:35:35,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 654 [2023-01-28 02:35:35,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:35:55,030 INFO L130 PetriNetUnfolder]: 45607/69348 cut-off events. [2023-01-28 02:35:55,030 INFO L131 PetriNetUnfolder]: For 443693/443693 co-relation queries the response was YES. [2023-01-28 02:35:55,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343103 conditions, 69348 events. 45607/69348 cut-off events. For 443693/443693 co-relation queries the response was YES. Maximal size of possible extension queue 2389. Compared 525509 event pairs, 12600 based on Foata normal form. 40/69388 useless extension candidates. Maximal degree in co-relation 341485. Up to 15983 conditions per place. [2023-01-28 02:35:55,766 INFO L137 encePairwiseOnDemand]: 634/654 looper letters, 1085 selfloop transitions, 231 changer transitions 108/1424 dead transitions. [2023-01-28 02:35:55,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1424 transitions, 13675 flow [2023-01-28 02:35:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-01-28 02:35:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-01-28 02:35:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 17488 transitions. [2023-01-28 02:35:55,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2938468259569177 [2023-01-28 02:35:55,781 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 17488 transitions. [2023-01-28 02:35:55,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 17488 transitions. [2023-01-28 02:35:55,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:35:55,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 17488 transitions. [2023-01-28 02:35:55,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 192.17582417582418) internal successors, (17488), 91 states have internal predecessors, (17488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:55,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 654.0) internal successors, (60168), 92 states have internal predecessors, (60168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:55,831 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 654.0) internal successors, (60168), 92 states have internal predecessors, (60168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:35:55,831 INFO L175 Difference]: Start difference. First operand has 145 places, 157 transitions, 1429 flow. Second operand 91 states and 17488 transitions. [2023-01-28 02:35:55,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1424 transitions, 13675 flow [2023-01-28 02:36:01,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 1424 transitions, 12765 flow, removed 433 selfloop flow, removed 5 redundant places. [2023-01-28 02:36:01,356 INFO L231 Difference]: Finished difference. Result has 287 places, 354 transitions, 4125 flow [2023-01-28 02:36:01,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=4125, PETRI_PLACES=287, PETRI_TRANSITIONS=354} [2023-01-28 02:36:01,357 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 249 predicate places. [2023-01-28 02:36:01,357 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 354 transitions, 4125 flow [2023-01-28 02:36:01,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 182.875) internal successors, (8778), 48 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:36:01,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:36:01,358 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, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:36:01,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 02:36:01,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:01,562 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)] === [2023-01-28 02:36:01,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:36:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1816406924, now seen corresponding path program 2 times [2023-01-28 02:36:01,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:36:01,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305776593] [2023-01-28 02:36:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:36:01,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:36:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:36:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:36:02,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:36:02,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305776593] [2023-01-28 02:36:02,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305776593] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:36:02,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236195520] [2023-01-28 02:36:02,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:36:02,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:36:02,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:36:02,213 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) [2023-01-28 02:36:02,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 02:36:02,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:36:02,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:36:02,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 02:36:02,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:36:02,816 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 02:36:02,816 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 89 treesize of output 45 [2023-01-28 02:36:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 02:36:02,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:36:04,035 INFO L321 Elim1Store]: treesize reduction 44, result has 93.0 percent of original size [2023-01-28 02:36:04,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 153 treesize of output 633 Received shutdown request... [2023-01-28 02:45:17,703 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 02:45:17,705 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 02:45:17,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 02:45:17,713 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:45:17,713 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 [2023-01-28 02:45:17,909 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,SelfDestructingSolverStorable12 [2023-01-28 02:45:17,909 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 49ms.. [2023-01-28 02:45:17,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 02:45:17,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 02:45:17,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 02:45:17,911 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:17,913 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:45:17,913 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:45:17,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:45:17 BasicIcfg [2023-01-28 02:45:17,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:45:17,915 INFO L158 Benchmark]: Toolchain (without parser) took 849108.65ms. Allocated memory was 681.6MB in the beginning and 10.0GB in the end (delta: 9.3GB). Free memory was 631.7MB in the beginning and 4.8GB in the end (delta: -4.2GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-01-28 02:45:17,915 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 362.8MB. Free memory is still 310.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:45:17,915 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.83ms. Allocated memory is still 681.6MB. Free memory was 631.7MB in the beginning and 618.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 02:45:17,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.47ms. Allocated memory is still 681.6MB. Free memory was 618.9MB in the beginning and 616.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:45:17,916 INFO L158 Benchmark]: Boogie Preprocessor took 20.82ms. Allocated memory is still 681.6MB. Free memory was 616.4MB in the beginning and 614.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:45:17,916 INFO L158 Benchmark]: RCFGBuilder took 475.95ms. Allocated memory is still 681.6MB. Free memory was 614.3MB in the beginning and 589.4MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 02:45:17,916 INFO L158 Benchmark]: TraceAbstraction took 848415.20ms. Allocated memory was 681.6MB in the beginning and 10.0GB in the end (delta: 9.3GB). Free memory was 588.8MB in the beginning and 4.8GB in the end (delta: -4.3GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-01-28 02:45:17,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 362.8MB. Free memory is still 310.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 157.83ms. Allocated memory is still 681.6MB. Free memory was 631.7MB in the beginning and 618.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.47ms. Allocated memory is still 681.6MB. Free memory was 618.9MB in the beginning and 616.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.82ms. Allocated memory is still 681.6MB. Free memory was 616.4MB in the beginning and 614.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 475.95ms. Allocated memory is still 681.6MB. Free memory was 614.3MB in the beginning and 589.4MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 848415.20ms. Allocated memory was 681.6MB in the beginning and 10.0GB in the end (delta: 9.3GB). Free memory was 588.8MB in the beginning and 4.8GB in the end (delta: -4.3GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.1s, 287 PlacesBefore, 38 PlacesAfterwards, 305 TransitionsBefore, 36 TransitionsAfterwards, 14784 CoEnabledTransitionPairs, 8 FixpointIterations, 133 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 33 TrivialYvCompositions, 38 ConcurrentYvCompositions, 20 ChoiceCompositions, 336 TotalNumberOfCompositions, 16298 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13847, independent: 13700, independent conditional: 0, independent unconditional: 13700, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8584, independent: 8544, independent conditional: 0, independent unconditional: 8544, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13847, independent: 5156, independent conditional: 0, independent unconditional: 5156, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 8584, unknown conditional: 0, unknown unconditional: 8584] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 127, Positive conditional cache size: 0, Positive unconditional cache size: 127, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 49ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 49ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 49ms.. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 49ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 414 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: 848.2s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 55.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5477 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5477 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 477 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10178 IncrementalHoareTripleChecker+Invalid, 10775 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 0 mSDtfsCounter, 10178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 718 GetRequests, 316 SyntacticMatches, 4 SemanticMatches, 398 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7764 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4125occurred in iteration=12, InterpolantAutomatonStates: 224, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 225.5s InterpolantComputationTime, 583 NumberOfCodeBlocks, 577 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 748 ConstructedInterpolants, 49 QuantifiedInterpolants, 11527 SizeOfPredicates, 223 NumberOfNonLiveVariables, 2823 ConjunctsInSsa, 283 ConjunctsInUnsatCore, 28 InterpolantComputations, 8 PerfectInterpolantSequences, 48/88 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