/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:04:19,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:04:19,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:04:19,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:04:19,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:04:19,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:04:19,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:04:19,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:04:20,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:04:20,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:04:20,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:04:20,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:04:20,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:04:20,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:04:20,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:04:20,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:04:20,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:04:20,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:04:20,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:04:20,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:04:20,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:04:20,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:04:20,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:04:20,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:04:20,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:04:20,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:04:20,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:04:20,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:04:20,033 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 07:04:20,053 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:04:20,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:04:20,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:04:20,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:04:20,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:04:20,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:04:20,055 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:04:20,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:04:20,055 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:04:20,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:04:20,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:04:20,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:04:20,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:04:20,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:04:20,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:04:20,056 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:04:20,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:04:20,056 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:04:20,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:04:20,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:04:20,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:04:20,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:04:20,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:04:20,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:20,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:04:20,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:04:20,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:04:20,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:04:20,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:04:20,058 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:04:20,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:04:20,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:04:20,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:04:20,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:04:20,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:04:20,266 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:04:20,267 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:04:20,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-01-28 07:04:21,201 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:04:21,392 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:04:21,392 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-01-28 07:04:21,403 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ba3dc31/4095292b432a4adc85888b60e5bac400/FLAG4a65c80bc [2023-01-28 07:04:21,426 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ba3dc31/4095292b432a4adc85888b60e5bac400 [2023-01-28 07:04:21,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:04:21,429 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:04:21,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:21,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:04:21,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:04:21,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@172a986a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21, skipping insertion in model container [2023-01-28 07:04:21,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:04:21,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:04:21,601 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2023-01-28 07:04:21,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:21,781 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:04:21,789 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2023-01-28 07:04:21,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:21,840 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:21,840 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:21,845 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:04:21,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21 WrapperNode [2023-01-28 07:04:21,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:21,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:21,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:04:21,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:04:21,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,899 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2023-01-28 07:04:21,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:21,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:04:21,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:04:21,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:04:21,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,929 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:04:21,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:04:21,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:04:21,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:04:21,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (1/1) ... [2023-01-28 07:04:21,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:21,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:04:21,980 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 07:04:21,998 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 07:04:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:04:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:04:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:04:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:04:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:04:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:04:22,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:04:22,012 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:04:22,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:04:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:04:22,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:04:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:04:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:04:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:04:22,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:04:22,014 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 07:04:22,153 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:04:22,154 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:04:22,518 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:04:22,735 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:04:22,736 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:04:22,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:22 BoogieIcfgContainer [2023-01-28 07:04:22,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:04:22,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:04:22,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:04:22,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:04:22,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:04:21" (1/3) ... [2023-01-28 07:04:22,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c39f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:22, skipping insertion in model container [2023-01-28 07:04:22,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:21" (2/3) ... [2023-01-28 07:04:22,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c39f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:22, skipping insertion in model container [2023-01-28 07:04:22,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:22" (3/3) ... [2023-01-28 07:04:22,743 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-01-28 07:04:22,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:04:22,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 07:04:22,755 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:04:22,802 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:04:22,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2023-01-28 07:04:22,875 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2023-01-28 07:04:22,876 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:22,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-01-28 07:04:22,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2023-01-28 07:04:22,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2023-01-28 07:04:22,886 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:04:22,896 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 227 flow [2023-01-28 07:04:22,899 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 227 flow [2023-01-28 07:04:22,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 227 flow [2023-01-28 07:04:22,929 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2023-01-28 07:04:22,929 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:22,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-01-28 07:04:22,935 INFO L119 LiptonReduction]: Number of co-enabled transitions 2202 [2023-01-28 07:04:26,221 INFO L134 LiptonReduction]: Checked pairs total: 6197 [2023-01-28 07:04:26,221 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-01-28 07:04:26,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:04:26,269 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;@1ef09afd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:04:26,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 07:04:26,273 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-28 07:04:26,274 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:26,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:26,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:26,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:26,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:26,278 INFO L85 PathProgramCache]: Analyzing trace with hash 243412563, now seen corresponding path program 1 times [2023-01-28 07:04:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272049150] [2023-01-28 07:04:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:26,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:26,756 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 07:04:26,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:26,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272049150] [2023-01-28 07:04:26,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272049150] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:26,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:26,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:04:26,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915132565] [2023-01-28 07:04:26,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:26,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:04:26,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:26,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:04:26,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:04:26,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-01-28 07:04:26,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 07:04:26,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:26,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-01-28 07:04:26,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:27,250 INFO L130 PetriNetUnfolder]: 2147/3120 cut-off events. [2023-01-28 07:04:27,250 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-01-28 07:04:27,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6315 conditions, 3120 events. 2147/3120 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14344 event pairs, 322 based on Foata normal form. 0/2939 useless extension candidates. Maximal degree in co-relation 6304. Up to 2576 conditions per place. [2023-01-28 07:04:27,264 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-01-28 07:04:27,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2023-01-28 07:04:27,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-01-28 07:04:27,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129449838187702 [2023-01-28 07:04:27,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-01-28 07:04:27,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-01-28 07:04:27,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:27,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-01-28 07:04:27,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 07:04:27,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 07:04:27,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 07:04:27,283 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 61 flow. Second operand 3 states and 317 transitions. [2023-01-28 07:04:27,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2023-01-28 07:04:27,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:04:27,287 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2023-01-28 07:04:27,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-01-28 07:04:27,291 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-01-28 07:04:27,291 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2023-01-28 07:04:27,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 07:04:27,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:27,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:27,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:04:27,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:27,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1991260440, now seen corresponding path program 1 times [2023-01-28 07:04:27,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:27,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205595996] [2023-01-28 07:04:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:27,768 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 07:04:27,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:27,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205595996] [2023-01-28 07:04:27,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205595996] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:27,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:27,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:27,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987951484] [2023-01-28 07:04:27,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:27,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:27,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:27,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:27,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:27,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2023-01-28 07:04:27,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 07:04:27,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:27,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2023-01-28 07:04:27,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:28,112 INFO L130 PetriNetUnfolder]: 1686/2503 cut-off events. [2023-01-28 07:04:28,112 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-01-28 07:04:28,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5164 conditions, 2503 events. 1686/2503 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11342 event pairs, 542 based on Foata normal form. 6/2509 useless extension candidates. Maximal degree in co-relation 5154. Up to 2419 conditions per place. [2023-01-28 07:04:28,121 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 33 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-01-28 07:04:28,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 162 flow [2023-01-28 07:04:28,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-01-28 07:04:28,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967637540453074 [2023-01-28 07:04:28,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-01-28 07:04:28,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-01-28 07:04:28,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:28,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-01-28 07:04:28,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 07:04:28,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 07:04:28,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 07:04:28,126 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 307 transitions. [2023-01-28 07:04:28,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 162 flow [2023-01-28 07:04:28,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:28,127 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 73 flow [2023-01-28 07:04:28,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-01-28 07:04:28,128 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-01-28 07:04:28,128 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 73 flow [2023-01-28 07:04:28,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 07:04:28,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:28,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:28,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:04:28,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:28,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1599530495, now seen corresponding path program 1 times [2023-01-28 07:04:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441464507] [2023-01-28 07:04:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:28,276 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 07:04:28,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:28,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441464507] [2023-01-28 07:04:28,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441464507] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:28,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:28,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:04:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019364673] [2023-01-28 07:04:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:28,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:04:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:04:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:04:28,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-01-28 07:04:28,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 07:04:28,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:28,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-01-28 07:04:28,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:28,508 INFO L130 PetriNetUnfolder]: 1466/2169 cut-off events. [2023-01-28 07:04:28,508 INFO L131 PetriNetUnfolder]: For 318/318 co-relation queries the response was YES. [2023-01-28 07:04:28,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 2169 events. 1466/2169 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9230 event pairs, 662 based on Foata normal form. 84/2252 useless extension candidates. Maximal degree in co-relation 4772. Up to 1189 conditions per place. [2023-01-28 07:04:28,516 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 34 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-01-28 07:04:28,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 169 flow [2023-01-28 07:04:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-01-28 07:04:28,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080906148867314 [2023-01-28 07:04:28,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-01-28 07:04:28,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-01-28 07:04:28,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:28,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-01-28 07:04:28,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 07:04:28,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 07:04:28,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 07:04:28,522 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 73 flow. Second operand 3 states and 314 transitions. [2023-01-28 07:04:28,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 169 flow [2023-01-28 07:04:28,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:28,525 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 78 flow [2023-01-28 07:04:28,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-01-28 07:04:28,526 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-01-28 07:04:28,529 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 78 flow [2023-01-28 07:04:28,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 07:04:28,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:28,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:28,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:04:28,530 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:28,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash -576501497, now seen corresponding path program 1 times [2023-01-28 07:04:28,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:28,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713252049] [2023-01-28 07:04:28,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:28,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:29,338 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 07:04:29,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:29,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713252049] [2023-01-28 07:04:29,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713252049] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:29,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:29,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:04:29,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319703746] [2023-01-28 07:04:29,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:29,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:04:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:29,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:04:29,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:04:29,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-01-28 07:04:29,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states 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 07:04:29,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:29,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-01-28 07:04:29,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:29,746 INFO L130 PetriNetUnfolder]: 2017/2976 cut-off events. [2023-01-28 07:04:29,746 INFO L131 PetriNetUnfolder]: For 498/498 co-relation queries the response was YES. [2023-01-28 07:04:29,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6805 conditions, 2976 events. 2017/2976 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13968 event pairs, 1046 based on Foata normal form. 30/3005 useless extension candidates. Maximal degree in co-relation 6792. Up to 2320 conditions per place. [2023-01-28 07:04:29,759 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 40 selfloop transitions, 21 changer transitions 0/62 dead transitions. [2023-01-28 07:04:29,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 281 flow [2023-01-28 07:04:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:04:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:04:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 576 transitions. [2023-01-28 07:04:29,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46601941747572817 [2023-01-28 07:04:29,760 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 576 transitions. [2023-01-28 07:04:29,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 576 transitions. [2023-01-28 07:04:29,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:29,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 576 transitions. [2023-01-28 07:04:29,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 07:04:29,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 07:04:29,764 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 07:04:29,764 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 78 flow. Second operand 6 states and 576 transitions. [2023-01-28 07:04:29,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 281 flow [2023-01-28 07:04:29,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:29,769 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 201 flow [2023-01-28 07:04:29,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2023-01-28 07:04:29,770 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-01-28 07:04:29,770 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 201 flow [2023-01-28 07:04:29,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states 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 07:04:29,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:29,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:29,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:04:29,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:29,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2100453712, now seen corresponding path program 1 times [2023-01-28 07:04:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957402330] [2023-01-28 07:04:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:29,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:30,352 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 07:04:30,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:30,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957402330] [2023-01-28 07:04:30,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957402330] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:30,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:30,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 07:04:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329720820] [2023-01-28 07:04:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:30,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:04:30,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:04:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:04:30,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-01-28 07:04:30,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states 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 07:04:30,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:30,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-01-28 07:04:30,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:31,081 INFO L130 PetriNetUnfolder]: 3104/4623 cut-off events. [2023-01-28 07:04:31,081 INFO L131 PetriNetUnfolder]: For 2825/2825 co-relation queries the response was YES. [2023-01-28 07:04:31,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13619 conditions, 4623 events. 3104/4623 cut-off events. For 2825/2825 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 23603 event pairs, 940 based on Foata normal form. 6/4628 useless extension candidates. Maximal degree in co-relation 13603. Up to 2016 conditions per place. [2023-01-28 07:04:31,098 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 65 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-01-28 07:04:31,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 89 transitions, 537 flow [2023-01-28 07:04:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:04:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:04:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 677 transitions. [2023-01-28 07:04:31,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4694868238557559 [2023-01-28 07:04:31,100 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 677 transitions. [2023-01-28 07:04:31,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 677 transitions. [2023-01-28 07:04:31,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:31,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 677 transitions. [2023-01-28 07:04:31,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 07:04:31,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 07:04:31,103 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 07:04:31,103 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 201 flow. Second operand 7 states and 677 transitions. [2023-01-28 07:04:31,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 89 transitions, 537 flow [2023-01-28 07:04:31,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 532 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:31,111 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 354 flow [2023-01-28 07:04:31,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-01-28 07:04:31,112 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-01-28 07:04:31,112 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 354 flow [2023-01-28 07:04:31,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states 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 07:04:31,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:31,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:31,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:04:31,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:31,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1048871140, now seen corresponding path program 2 times [2023-01-28 07:04:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:31,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100601502] [2023-01-28 07:04:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:31,286 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 07:04:31,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:31,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100601502] [2023-01-28 07:04:31,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100601502] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:31,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:31,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:31,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706225515] [2023-01-28 07:04:31,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:31,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:31,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:31,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:31,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-01-28 07:04:31,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 07:04:31,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:31,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-01-28 07:04:31,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:31,698 INFO L130 PetriNetUnfolder]: 2310/3672 cut-off events. [2023-01-28 07:04:31,698 INFO L131 PetriNetUnfolder]: For 8086/8086 co-relation queries the response was YES. [2023-01-28 07:04:31,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13451 conditions, 3672 events. 2310/3672 cut-off events. For 8086/8086 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20357 event pairs, 515 based on Foata normal form. 392/4063 useless extension candidates. Maximal degree in co-relation 13431. Up to 1342 conditions per place. [2023-01-28 07:04:31,710 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 138 selfloop transitions, 5 changer transitions 1/145 dead transitions. [2023-01-28 07:04:31,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 145 transitions, 1208 flow [2023-01-28 07:04:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:31,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 406 transitions. [2023-01-28 07:04:31,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271844660194175 [2023-01-28 07:04:31,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 406 transitions. [2023-01-28 07:04:31,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 406 transitions. [2023-01-28 07:04:31,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:31,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 406 transitions. [2023-01-28 07:04:31,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states 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 07:04:31,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 07:04:31,713 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 07:04:31,713 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 354 flow. Second operand 4 states and 406 transitions. [2023-01-28 07:04:31,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 145 transitions, 1208 flow [2023-01-28 07:04:31,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 145 transitions, 1117 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-01-28 07:04:31,721 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 351 flow [2023-01-28 07:04:31,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2023-01-28 07:04:31,722 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-01-28 07:04:31,722 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 351 flow [2023-01-28 07:04:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 07:04:31,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:31,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:31,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:04:31,722 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:31,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash -393579275, now seen corresponding path program 1 times [2023-01-28 07:04:31,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:31,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124978291] [2023-01-28 07:04:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:31,927 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 07:04:31,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:31,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124978291] [2023-01-28 07:04:31,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124978291] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:31,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:31,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:04:31,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874757810] [2023-01-28 07:04:31,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:31,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:04:31,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:04:31,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:04:31,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-01-28 07:04:31,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 07:04:31,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:31,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-01-28 07:04:31,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:32,199 INFO L130 PetriNetUnfolder]: 1049/1792 cut-off events. [2023-01-28 07:04:32,199 INFO L131 PetriNetUnfolder]: For 3886/3886 co-relation queries the response was YES. [2023-01-28 07:04:32,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 1792 events. 1049/1792 cut-off events. For 3886/3886 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9282 event pairs, 182 based on Foata normal form. 176/1967 useless extension candidates. Maximal degree in co-relation 7284. Up to 798 conditions per place. [2023-01-28 07:04:32,207 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 136 selfloop transitions, 8 changer transitions 1/146 dead transitions. [2023-01-28 07:04:32,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 146 transitions, 1167 flow [2023-01-28 07:04:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:04:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:04:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 509 transitions. [2023-01-28 07:04:32,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941747572815534 [2023-01-28 07:04:32,209 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 509 transitions. [2023-01-28 07:04:32,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 509 transitions. [2023-01-28 07:04:32,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:32,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 509 transitions. [2023-01-28 07:04:32,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 07:04:32,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 07:04:32,211 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 07:04:32,211 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 351 flow. Second operand 5 states and 509 transitions. [2023-01-28 07:04:32,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 146 transitions, 1167 flow [2023-01-28 07:04:32,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 146 transitions, 1157 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:32,218 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 391 flow [2023-01-28 07:04:32,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-01-28 07:04:32,218 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-01-28 07:04:32,219 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 391 flow [2023-01-28 07:04:32,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 07:04:32,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:32,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:32,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:04:32,219 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:32,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash 720337333, now seen corresponding path program 1 times [2023-01-28 07:04:32,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:32,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052401680] [2023-01-28 07:04:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:32,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:33,346 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 07:04:33,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:33,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052401680] [2023-01-28 07:04:33,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052401680] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:33,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:33,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 07:04:33,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949582069] [2023-01-28 07:04:33,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:33,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 07:04:33,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:33,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 07:04:33,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-28 07:04:33,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-01-28 07:04:33,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 391 flow. Second operand has 9 states, 9 states have (on average 88.0) internal successors, (792), 9 states have internal predecessors, (792), 0 states have call successors, (0), 0 states 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 07:04:33,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:33,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-01-28 07:04:33,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:33,839 INFO L130 PetriNetUnfolder]: 978/1747 cut-off events. [2023-01-28 07:04:33,839 INFO L131 PetriNetUnfolder]: For 4227/4227 co-relation queries the response was YES. [2023-01-28 07:04:33,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7483 conditions, 1747 events. 978/1747 cut-off events. For 4227/4227 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9386 event pairs, 61 based on Foata normal form. 12/1759 useless extension candidates. Maximal degree in co-relation 7459. Up to 816 conditions per place. [2023-01-28 07:04:33,850 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 81 selfloop transitions, 21 changer transitions 30/133 dead transitions. [2023-01-28 07:04:33,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 133 transitions, 1117 flow [2023-01-28 07:04:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:04:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:04:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 869 transitions. [2023-01-28 07:04:33,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46871628910463864 [2023-01-28 07:04:33,853 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 869 transitions. [2023-01-28 07:04:33,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 869 transitions. [2023-01-28 07:04:33,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:33,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 869 transitions. [2023-01-28 07:04:33,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.55555555555556) internal successors, (869), 9 states have internal predecessors, (869), 0 states have call successors, (0), 0 states 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 07:04:33,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states 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 07:04:33,856 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states 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 07:04:33,857 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 391 flow. Second operand 9 states and 869 transitions. [2023-01-28 07:04:33,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 133 transitions, 1117 flow [2023-01-28 07:04:33,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 1011 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-01-28 07:04:33,865 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 440 flow [2023-01-28 07:04:33,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=440, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-01-28 07:04:33,867 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-01-28 07:04:33,868 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 440 flow [2023-01-28 07:04:33,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.0) internal successors, (792), 9 states have internal predecessors, (792), 0 states have call successors, (0), 0 states 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 07:04:33,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:33,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:33,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:04:33,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:33,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:33,871 INFO L85 PathProgramCache]: Analyzing trace with hash -69634631, now seen corresponding path program 2 times [2023-01-28 07:04:33,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:33,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347078041] [2023-01-28 07:04:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:33,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:35,153 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 07:04:35,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:35,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347078041] [2023-01-28 07:04:35,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347078041] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:35,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:35,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 07:04:35,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446629928] [2023-01-28 07:04:35,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:35,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 07:04:35,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:35,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 07:04:35,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 07:04:35,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2023-01-28 07:04:35,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 440 flow. Second operand has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 07:04:35,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:35,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2023-01-28 07:04:35,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:35,711 INFO L130 PetriNetUnfolder]: 1099/1981 cut-off events. [2023-01-28 07:04:35,711 INFO L131 PetriNetUnfolder]: For 5091/5091 co-relation queries the response was YES. [2023-01-28 07:04:35,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8689 conditions, 1981 events. 1099/1981 cut-off events. For 5091/5091 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11222 event pairs, 97 based on Foata normal form. 10/1991 useless extension candidates. Maximal degree in co-relation 8663. Up to 840 conditions per place. [2023-01-28 07:04:35,719 INFO L137 encePairwiseOnDemand]: 195/206 looper letters, 92 selfloop transitions, 23 changer transitions 23/139 dead transitions. [2023-01-28 07:04:35,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 139 transitions, 1184 flow [2023-01-28 07:04:35,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 07:04:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 07:04:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 772 transitions. [2023-01-28 07:04:35,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684466019417476 [2023-01-28 07:04:35,722 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 772 transitions. [2023-01-28 07:04:35,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 772 transitions. [2023-01-28 07:04:35,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:35,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 772 transitions. [2023-01-28 07:04:35,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.5) internal successors, (772), 8 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 07:04:35,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 07:04:35,727 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 07:04:35,727 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 440 flow. Second operand 8 states and 772 transitions. [2023-01-28 07:04:35,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 139 transitions, 1184 flow [2023-01-28 07:04:35,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 139 transitions, 1149 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 07:04:35,736 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 563 flow [2023-01-28 07:04:35,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-01-28 07:04:35,737 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-01-28 07:04:35,737 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 563 flow [2023-01-28 07:04:35,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 07:04:35,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:35,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:35,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:04:35,737 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:35,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash 653242567, now seen corresponding path program 1 times [2023-01-28 07:04:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:35,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303549661] [2023-01-28 07:04:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:35,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:36,089 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 07:04:36,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:36,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303549661] [2023-01-28 07:04:36,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303549661] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:36,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:36,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:04:36,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991020701] [2023-01-28 07:04:36,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:36,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:04:36,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:04:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:04:36,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-01-28 07:04:36,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 563 flow. Second operand has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 07:04:36,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:36,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-01-28 07:04:36,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:36,357 INFO L130 PetriNetUnfolder]: 865/1564 cut-off events. [2023-01-28 07:04:36,357 INFO L131 PetriNetUnfolder]: For 6038/6038 co-relation queries the response was YES. [2023-01-28 07:04:36,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7214 conditions, 1564 events. 865/1564 cut-off events. For 6038/6038 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8667 event pairs, 210 based on Foata normal form. 43/1606 useless extension candidates. Maximal degree in co-relation 7185. Up to 738 conditions per place. [2023-01-28 07:04:36,365 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 109 selfloop transitions, 11 changer transitions 14/135 dead transitions. [2023-01-28 07:04:36,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 135 transitions, 1364 flow [2023-01-28 07:04:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:04:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:04:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 582 transitions. [2023-01-28 07:04:36,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470873786407767 [2023-01-28 07:04:36,367 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 582 transitions. [2023-01-28 07:04:36,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 582 transitions. [2023-01-28 07:04:36,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:36,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 582 transitions. [2023-01-28 07:04:36,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 07:04:36,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 07:04:36,370 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 07:04:36,370 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 563 flow. Second operand 6 states and 582 transitions. [2023-01-28 07:04:36,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 135 transitions, 1364 flow [2023-01-28 07:04:36,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 135 transitions, 1251 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-01-28 07:04:36,380 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 519 flow [2023-01-28 07:04:36,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-01-28 07:04:36,381 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-01-28 07:04:36,381 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 519 flow [2023-01-28 07:04:36,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 07:04:36,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:36,381 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 07:04:36,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:04:36,381 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:36,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:36,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1161937857, now seen corresponding path program 1 times [2023-01-28 07:04:36,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:36,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508105824] [2023-01-28 07:04:36,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:36,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:36,665 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 07:04:36,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:36,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508105824] [2023-01-28 07:04:36,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508105824] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:36,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:36,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:36,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827304906] [2023-01-28 07:04:36,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:36,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:36,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:36,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:36,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:36,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2023-01-28 07:04:36,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 519 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 07:04:36,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:36,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2023-01-28 07:04:36,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:36,957 INFO L130 PetriNetUnfolder]: 1354/2377 cut-off events. [2023-01-28 07:04:36,957 INFO L131 PetriNetUnfolder]: For 8238/8238 co-relation queries the response was YES. [2023-01-28 07:04:36,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11109 conditions, 2377 events. 1354/2377 cut-off events. For 8238/8238 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13629 event pairs, 188 based on Foata normal form. 2/2379 useless extension candidates. Maximal degree in co-relation 11080. Up to 1361 conditions per place. [2023-01-28 07:04:36,966 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 65 selfloop transitions, 1 changer transitions 71/137 dead transitions. [2023-01-28 07:04:36,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 137 transitions, 1337 flow [2023-01-28 07:04:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 412 transitions. [2023-01-28 07:04:36,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-28 07:04:36,968 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 412 transitions. [2023-01-28 07:04:36,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 412 transitions. [2023-01-28 07:04:36,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:36,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 412 transitions. [2023-01-28 07:04:36,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 07:04:36,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 07:04:36,970 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 07:04:36,970 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 519 flow. Second operand 4 states and 412 transitions. [2023-01-28 07:04:36,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 137 transitions, 1337 flow [2023-01-28 07:04:36,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 137 transitions, 1175 flow, removed 28 selfloop flow, removed 10 redundant places. [2023-01-28 07:04:36,985 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 353 flow [2023-01-28 07:04:36,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-01-28 07:04:36,986 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2023-01-28 07:04:36,986 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 353 flow [2023-01-28 07:04:36,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 07:04:36,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:36,986 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 07:04:36,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 07:04:36,986 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:36,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:36,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1198941303, now seen corresponding path program 2 times [2023-01-28 07:04:36,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:36,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570889813] [2023-01-28 07:04:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:36,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:38,297 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 07:04:38,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570889813] [2023-01-28 07:04:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570889813] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:38,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:38,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 07:04:38,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172005878] [2023-01-28 07:04:38,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:38,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:04:38,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:04:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:04:38,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-01-28 07:04:38,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 353 flow. Second operand has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 07:04:38,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:38,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-01-28 07:04:38,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:38,635 INFO L130 PetriNetUnfolder]: 843/1616 cut-off events. [2023-01-28 07:04:38,635 INFO L131 PetriNetUnfolder]: For 4138/4138 co-relation queries the response was YES. [2023-01-28 07:04:38,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1616 events. 843/1616 cut-off events. For 4138/4138 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9239 event pairs, 215 based on Foata normal form. 1/1609 useless extension candidates. Maximal degree in co-relation 6833. Up to 932 conditions per place. [2023-01-28 07:04:38,641 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 53 selfloop transitions, 10 changer transitions 58/122 dead transitions. [2023-01-28 07:04:38,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 122 transitions, 996 flow [2023-01-28 07:04:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 07:04:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 07:04:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 747 transitions. [2023-01-28 07:04:38,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532766990291262 [2023-01-28 07:04:38,643 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 747 transitions. [2023-01-28 07:04:38,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 747 transitions. [2023-01-28 07:04:38,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:38,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 747 transitions. [2023-01-28 07:04:38,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.375) internal successors, (747), 8 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 07:04:38,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 07:04:38,647 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 07:04:38,647 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 353 flow. Second operand 8 states and 747 transitions. [2023-01-28 07:04:38,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 122 transitions, 996 flow [2023-01-28 07:04:38,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 122 transitions, 984 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:38,655 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 396 flow [2023-01-28 07:04:38,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2023-01-28 07:04:38,656 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-01-28 07:04:38,656 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 396 flow [2023-01-28 07:04:38,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 07:04:38,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:38,656 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 07:04:38,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 07:04:38,656 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:38,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:38,656 INFO L85 PathProgramCache]: Analyzing trace with hash 309582873, now seen corresponding path program 3 times [2023-01-28 07:04:38,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:38,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134199071] [2023-01-28 07:04:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:38,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:39,241 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 07:04:39,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134199071] [2023-01-28 07:04:39,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134199071] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:39,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:39,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 07:04:39,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139890193] [2023-01-28 07:04:39,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:39,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:04:39,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:04:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:04:39,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-01-28 07:04:39,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 396 flow. Second operand has 8 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 0 states have call successors, (0), 0 states 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 07:04:39,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:39,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-01-28 07:04:39,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:39,541 INFO L130 PetriNetUnfolder]: 665/1303 cut-off events. [2023-01-28 07:04:39,541 INFO L131 PetriNetUnfolder]: For 5338/5339 co-relation queries the response was YES. [2023-01-28 07:04:39,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 1303 events. 665/1303 cut-off events. For 5338/5339 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7246 event pairs, 384 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 6170. Up to 961 conditions per place. [2023-01-28 07:04:39,546 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 43 selfloop transitions, 16 changer transitions 37/97 dead transitions. [2023-01-28 07:04:39,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 97 transitions, 870 flow [2023-01-28 07:04:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:04:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:04:39,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 668 transitions. [2023-01-28 07:04:39,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463245492371706 [2023-01-28 07:04:39,548 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 668 transitions. [2023-01-28 07:04:39,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 668 transitions. [2023-01-28 07:04:39,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:39,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 668 transitions. [2023-01-28 07:04:39,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.42857142857143) internal successors, (668), 7 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 07:04:39,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 07:04:39,551 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 07:04:39,551 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 396 flow. Second operand 7 states and 668 transitions. [2023-01-28 07:04:39,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 97 transitions, 870 flow [2023-01-28 07:04:39,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 97 transitions, 831 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-01-28 07:04:39,557 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 442 flow [2023-01-28 07:04:39,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2023-01-28 07:04:39,558 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-01-28 07:04:39,558 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 442 flow [2023-01-28 07:04:39,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 0 states have call successors, (0), 0 states 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 07:04:39,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:39,559 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 07:04:39,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 07:04:39,559 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:39,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:39,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1196264807, now seen corresponding path program 4 times [2023-01-28 07:04:39,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:39,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452296886] [2023-01-28 07:04:39,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:39,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:41,263 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 07:04:41,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:41,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452296886] [2023-01-28 07:04:41,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452296886] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:41,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:41,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 07:04:41,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380586838] [2023-01-28 07:04:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:41,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 07:04:41,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 07:04:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-01-28 07:04:41,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 206 [2023-01-28 07:04:41,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 442 flow. Second operand has 12 states, 12 states have (on average 81.91666666666667) internal successors, (983), 12 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 07:04:41,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:41,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 206 [2023-01-28 07:04:41,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:41,735 INFO L130 PetriNetUnfolder]: 677/1382 cut-off events. [2023-01-28 07:04:41,735 INFO L131 PetriNetUnfolder]: For 6604/6604 co-relation queries the response was YES. [2023-01-28 07:04:41,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6937 conditions, 1382 events. 677/1382 cut-off events. For 6604/6604 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8068 event pairs, 148 based on Foata normal form. 4/1379 useless extension candidates. Maximal degree in co-relation 6913. Up to 532 conditions per place. [2023-01-28 07:04:41,742 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 37 selfloop transitions, 11 changer transitions 81/130 dead transitions. [2023-01-28 07:04:41,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 130 transitions, 1183 flow [2023-01-28 07:04:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:04:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:04:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 808 transitions. [2023-01-28 07:04:41,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43581445523193096 [2023-01-28 07:04:41,744 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 808 transitions. [2023-01-28 07:04:41,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 808 transitions. [2023-01-28 07:04:41,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:41,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 808 transitions. [2023-01-28 07:04:41,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.77777777777777) internal successors, (808), 9 states have internal predecessors, (808), 0 states have call successors, (0), 0 states 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 07:04:41,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states 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 07:04:41,748 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states 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 07:04:41,748 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 442 flow. Second operand 9 states and 808 transitions. [2023-01-28 07:04:41,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 130 transitions, 1183 flow [2023-01-28 07:04:41,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 130 transitions, 1094 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-01-28 07:04:41,757 INFO L231 Difference]: Finished difference. Result has 76 places, 41 transitions, 316 flow [2023-01-28 07:04:41,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=316, PETRI_PLACES=76, PETRI_TRANSITIONS=41} [2023-01-28 07:04:41,757 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-01-28 07:04:41,757 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 41 transitions, 316 flow [2023-01-28 07:04:41,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.91666666666667) internal successors, (983), 12 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 07:04:41,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:41,758 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 07:04:41,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 07:04:41,758 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:41,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1417680957, now seen corresponding path program 5 times [2023-01-28 07:04:41,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:41,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538888600] [2023-01-28 07:04:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:41,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:42,800 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 07:04:42,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:42,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538888600] [2023-01-28 07:04:42,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538888600] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:42,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:42,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 07:04:42,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191776095] [2023-01-28 07:04:42,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:42,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:04:42,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:42,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:04:42,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:04:42,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-01-28 07:04:42,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 41 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 07:04:42,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:42,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-01-28 07:04:42,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:43,145 INFO L130 PetriNetUnfolder]: 311/625 cut-off events. [2023-01-28 07:04:43,146 INFO L131 PetriNetUnfolder]: For 3100/3100 co-relation queries the response was YES. [2023-01-28 07:04:43,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 625 events. 311/625 cut-off events. For 3100/3100 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2832 event pairs, 73 based on Foata normal form. 1/618 useless extension candidates. Maximal degree in co-relation 3083. Up to 233 conditions per place. [2023-01-28 07:04:43,149 INFO L137 encePairwiseOnDemand]: 197/206 looper letters, 63 selfloop transitions, 15 changer transitions 31/110 dead transitions. [2023-01-28 07:04:43,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 964 flow [2023-01-28 07:04:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:04:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:04:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 822 transitions. [2023-01-28 07:04:43,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44336569579288027 [2023-01-28 07:04:43,155 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 822 transitions. [2023-01-28 07:04:43,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 822 transitions. [2023-01-28 07:04:43,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:43,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 822 transitions. [2023-01-28 07:04:43,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.33333333333333) internal successors, (822), 9 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 07:04:43,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states 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 07:04:43,164 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states 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 07:04:43,164 INFO L175 Difference]: Start difference. First operand has 76 places, 41 transitions, 316 flow. Second operand 9 states and 822 transitions. [2023-01-28 07:04:43,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 964 flow [2023-01-28 07:04:43,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 862 flow, removed 40 selfloop flow, removed 11 redundant places. [2023-01-28 07:04:43,172 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 353 flow [2023-01-28 07:04:43,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=353, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2023-01-28 07:04:43,173 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-01-28 07:04:43,173 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 353 flow [2023-01-28 07:04:43,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 07:04:43,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:43,173 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 07:04:43,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 07:04:43,173 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:43,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:43,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1521466457, now seen corresponding path program 6 times [2023-01-28 07:04:43,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:43,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577595331] [2023-01-28 07:04:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:43,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:44,679 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 07:04:44,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:44,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577595331] [2023-01-28 07:04:44,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577595331] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:44,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:44,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 07:04:44,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477996962] [2023-01-28 07:04:44,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:44,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 07:04:44,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:44,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 07:04:44,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-01-28 07:04:44,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-01-28 07:04:44,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 353 flow. Second operand has 11 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 0 states have call successors, (0), 0 states 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 07:04:44,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:44,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-01-28 07:04:44,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:44,954 INFO L130 PetriNetUnfolder]: 310/638 cut-off events. [2023-01-28 07:04:44,954 INFO L131 PetriNetUnfolder]: For 2302/2302 co-relation queries the response was YES. [2023-01-28 07:04:44,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 638 events. 310/638 cut-off events. For 2302/2302 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3069 event pairs, 18 based on Foata normal form. 1/634 useless extension candidates. Maximal degree in co-relation 3006. Up to 259 conditions per place. [2023-01-28 07:04:44,957 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 60 selfloop transitions, 11 changer transitions 9/81 dead transitions. [2023-01-28 07:04:44,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 725 flow [2023-01-28 07:04:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:04:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:04:44,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2023-01-28 07:04:44,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4457928802588997 [2023-01-28 07:04:44,959 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 551 transitions. [2023-01-28 07:04:44,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 551 transitions. [2023-01-28 07:04:44,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:44,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 551 transitions. [2023-01-28 07:04:44,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 07:04:44,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 07:04:44,962 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 07:04:44,962 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 353 flow. Second operand 6 states and 551 transitions. [2023-01-28 07:04:44,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 725 flow [2023-01-28 07:04:44,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 681 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-01-28 07:04:44,966 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 402 flow [2023-01-28 07:04:44,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-01-28 07:04:44,967 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-01-28 07:04:44,967 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 402 flow [2023-01-28 07:04:44,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 0 states have call successors, (0), 0 states 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 07:04:44,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:44,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:44,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 07:04:44,967 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:44,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash -345399677, now seen corresponding path program 7 times [2023-01-28 07:04:44,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:44,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670783650] [2023-01-28 07:04:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:44,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:45,921 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 07:04:45,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:45,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670783650] [2023-01-28 07:04:45,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670783650] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:45,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:45,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 07:04:45,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549502532] [2023-01-28 07:04:45,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:45,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 07:04:45,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:45,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 07:04:45,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-28 07:04:45,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-01-28 07:04:45,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 402 flow. Second operand has 9 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 07:04:45,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:45,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-01-28 07:04:45,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:46,162 INFO L130 PetriNetUnfolder]: 431/892 cut-off events. [2023-01-28 07:04:46,163 INFO L131 PetriNetUnfolder]: For 3518/3518 co-relation queries the response was YES. [2023-01-28 07:04:46,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 892 events. 431/892 cut-off events. For 3518/3518 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4700 event pairs, 154 based on Foata normal form. 1/888 useless extension candidates. Maximal degree in co-relation 4199. Up to 484 conditions per place. [2023-01-28 07:04:46,167 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 52 selfloop transitions, 7 changer transitions 31/91 dead transitions. [2023-01-28 07:04:46,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 870 flow [2023-01-28 07:04:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:04:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:04:46,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2023-01-28 07:04:46,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459084604715673 [2023-01-28 07:04:46,169 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2023-01-28 07:04:46,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2023-01-28 07:04:46,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:46,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2023-01-28 07:04:46,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 07:04:46,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 07:04:46,172 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 07:04:46,172 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 402 flow. Second operand 7 states and 643 transitions. [2023-01-28 07:04:46,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 870 flow [2023-01-28 07:04:46,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 829 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-28 07:04:46,176 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 430 flow [2023-01-28 07:04:46,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2023-01-28 07:04:46,177 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-01-28 07:04:46,177 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 430 flow [2023-01-28 07:04:46,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 07:04:46,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:46,177 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 07:04:46,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 07:04:46,177 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:46,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash -342773901, now seen corresponding path program 8 times [2023-01-28 07:04:46,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:46,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364720188] [2023-01-28 07:04:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:46,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:47,165 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 07:04:47,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:47,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364720188] [2023-01-28 07:04:47,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364720188] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:47,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:47,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 07:04:47,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161081729] [2023-01-28 07:04:47,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:47,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 07:04:47,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:47,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 07:04:47,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-28 07:04:47,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-01-28 07:04:47,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 430 flow. Second operand has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states 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 07:04:47,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:47,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-01-28 07:04:47,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:47,452 INFO L130 PetriNetUnfolder]: 368/759 cut-off events. [2023-01-28 07:04:47,453 INFO L131 PetriNetUnfolder]: For 3198/3198 co-relation queries the response was YES. [2023-01-28 07:04:47,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 759 events. 368/759 cut-off events. For 3198/3198 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3837 event pairs, 165 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 3561. Up to 418 conditions per place. [2023-01-28 07:04:47,459 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 35 selfloop transitions, 2 changer transitions 52/90 dead transitions. [2023-01-28 07:04:47,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 845 flow [2023-01-28 07:04:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:04:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:04:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2023-01-28 07:04:47,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4457928802588997 [2023-01-28 07:04:47,466 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 551 transitions. [2023-01-28 07:04:47,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 551 transitions. [2023-01-28 07:04:47,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:47,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 551 transitions. [2023-01-28 07:04:47,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 07:04:47,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 07:04:47,468 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 07:04:47,468 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 430 flow. Second operand 6 states and 551 transitions. [2023-01-28 07:04:47,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 845 flow [2023-01-28 07:04:47,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 829 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-01-28 07:04:47,473 INFO L231 Difference]: Finished difference. Result has 72 places, 38 transitions, 276 flow [2023-01-28 07:04:47,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=72, PETRI_TRANSITIONS=38} [2023-01-28 07:04:47,473 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-01-28 07:04:47,473 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 38 transitions, 276 flow [2023-01-28 07:04:47,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states 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 07:04:47,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:47,474 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 07:04:47,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 07:04:47,474 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:47,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:47,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1741772747, now seen corresponding path program 9 times [2023-01-28 07:04:47,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:47,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402209539] [2023-01-28 07:04:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:47,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:49,053 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 07:04:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402209539] [2023-01-28 07:04:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402209539] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:49,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:49,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 07:04:49,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566113058] [2023-01-28 07:04:49,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:49,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 07:04:49,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 07:04:49,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-28 07:04:49,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-01-28 07:04:49,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 38 transitions, 276 flow. Second operand has 9 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 07:04:49,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:49,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-01-28 07:04:49,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:49,244 INFO L130 PetriNetUnfolder]: 215/428 cut-off events. [2023-01-28 07:04:49,244 INFO L131 PetriNetUnfolder]: For 1959/1966 co-relation queries the response was YES. [2023-01-28 07:04:49,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 428 events. 215/428 cut-off events. For 1959/1966 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1807 event pairs, 31 based on Foata normal form. 5/430 useless extension candidates. Maximal degree in co-relation 2054. Up to 220 conditions per place. [2023-01-28 07:04:49,246 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2023-01-28 07:04:49,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 62 transitions, 592 flow [2023-01-28 07:04:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 07:04:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 07:04:49,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 712 transitions. [2023-01-28 07:04:49,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4320388349514563 [2023-01-28 07:04:49,248 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 712 transitions. [2023-01-28 07:04:49,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 712 transitions. [2023-01-28 07:04:49,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:49,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 712 transitions. [2023-01-28 07:04:49,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 07:04:49,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 07:04:49,251 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 07:04:49,251 INFO L175 Difference]: Start difference. First operand has 72 places, 38 transitions, 276 flow. Second operand 8 states and 712 transitions. [2023-01-28 07:04:49,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 62 transitions, 592 flow [2023-01-28 07:04:49,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 552 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-01-28 07:04:49,254 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2023-01-28 07:04:49,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2023-01-28 07:04:49,254 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-01-28 07:04:49,254 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2023-01-28 07:04:49,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 07:04:49,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-28 07:04:49,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-28 07:04:49,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-28 07:04:49,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-01-28 07:04:49,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-01-28 07:04:49,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-28 07:04:49,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 07:04:49,258 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 2, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:49,261 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:04:49,261 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:04:49,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:04:49 BasicIcfg [2023-01-28 07:04:49,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:04:49,265 INFO L158 Benchmark]: Toolchain (without parser) took 27836.23ms. Allocated memory was 373.3MB in the beginning and 1.2GB in the end (delta: 820.0MB). Free memory was 340.8MB in the beginning and 879.1MB in the end (delta: -538.3MB). Peak memory consumption was 285.3MB. Max. memory is 16.0GB. [2023-01-28 07:04:49,265 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 213.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:04:49,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.63ms. Allocated memory is still 373.3MB. Free memory was 340.8MB in the beginning and 313.2MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-28 07:04:49,265 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.77ms. Allocated memory is still 373.3MB. Free memory was 313.2MB in the beginning and 309.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 07:04:49,265 INFO L158 Benchmark]: Boogie Preprocessor took 52.44ms. Allocated memory is still 373.3MB. Free memory was 309.9MB in the beginning and 307.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:04:49,265 INFO L158 Benchmark]: RCFGBuilder took 784.69ms. Allocated memory is still 373.3MB. Free memory was 307.4MB in the beginning and 309.2MB in the end (delta: -1.8MB). Peak memory consumption was 36.4MB. Max. memory is 16.0GB. [2023-01-28 07:04:49,266 INFO L158 Benchmark]: TraceAbstraction took 26525.62ms. Allocated memory was 373.3MB in the beginning and 1.2GB in the end (delta: 820.0MB). Free memory was 309.2MB in the beginning and 879.1MB in the end (delta: -570.0MB). Peak memory consumption was 251.0MB. Max. memory is 16.0GB. [2023-01-28 07:04:49,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 213.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 416.63ms. Allocated memory is still 373.3MB. Free memory was 340.8MB in the beginning and 313.2MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.77ms. Allocated memory is still 373.3MB. Free memory was 313.2MB in the beginning and 309.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 52.44ms. Allocated memory is still 373.3MB. Free memory was 309.9MB in the beginning and 307.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 784.69ms. Allocated memory is still 373.3MB. Free memory was 307.4MB in the beginning and 309.2MB in the end (delta: -1.8MB). Peak memory consumption was 36.4MB. Max. memory is 16.0GB. * TraceAbstraction took 26525.62ms. Allocated memory was 373.3MB in the beginning and 1.2GB in the end (delta: 820.0MB). Free memory was 309.2MB in the beginning and 879.1MB in the end (delta: -570.0MB). Peak memory consumption was 251.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 117 PlacesBefore, 36 PlacesAfterwards, 109 TransitionsBefore, 26 TransitionsAfterwards, 2202 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 94 TotalNumberOfCompositions, 6197 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2315, independent: 2124, independent conditional: 0, independent unconditional: 2124, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1176, independent: 1120, independent conditional: 0, independent unconditional: 1120, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2315, independent: 1004, independent conditional: 0, independent unconditional: 1004, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 1176, unknown conditional: 0, unknown unconditional: 1176] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 142 locations, 6 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: 26.4s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 687 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 687 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 328 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3242 IncrementalHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 328 mSolverCounterUnsat, 1 mSDtfsCounter, 3242 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred in iteration=9, InterpolantAutomatonStates: 118, 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: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 334 ConstructedInterpolants, 0 QuantifiedInterpolants, 3438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 07:04:49,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...