/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/weaver/chl-node-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:01:05,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:01:05,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:01:05,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:01:05,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:01:05,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:01:05,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:01:05,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:01:05,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:01:05,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:01:05,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:01:05,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:01:05,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:01:05,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:01:05,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:01:05,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:01:05,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:01:05,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:01:05,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:01:05,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:01:05,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:01:05,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:01:05,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:01:05,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:01:05,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:01:05,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:01:05,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:01:05,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:01:05,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:01:05,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:01:05,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:01:05,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:01:05,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:01:05,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:01:05,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:01:05,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:01:05,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:01:05,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:01:05,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:01:05,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:01:05,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:01:05,088 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 09:01:05,116 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:01:05,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:01:05,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:01:05,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:01:05,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:01:05,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:01:05,117 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:01:05,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:01:05,117 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:01:05,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:01:05,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:01:05,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:01:05,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:01:05,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:01:05,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:01:05,118 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:01:05,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:01:05,118 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:01:05,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:01:05,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:01:05,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:01:05,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:01:05,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:01:05,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:01:05,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:01:05,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:01:05,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:01:05,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:01:05,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:01:05,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:01:05,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:01:05,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:01:05,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:01:05,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:01:05,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:01:05,295 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:01:05,300 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:01:05,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-01-28 09:01:06,365 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:01:06,499 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:01:06,499 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-01-28 09:01:06,504 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eceab1e21/f4adc2ca9e074816b95c46497eadcbb3/FLAG02a60cee9 [2023-01-28 09:01:06,513 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eceab1e21/f4adc2ca9e074816b95c46497eadcbb3 [2023-01-28 09:01:06,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:01:06,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:01:06,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:01:06,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:01:06,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:01:06,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b06808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06, skipping insertion in model container [2023-01-28 09:01:06,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:01:06,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:01:06,653 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-01-28 09:01:06,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:01:06,680 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:01:06,698 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-01-28 09:01:06,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:01:06,712 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:01:06,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06 WrapperNode [2023-01-28 09:01:06,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:01:06,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:01:06,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:01:06,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:01:06,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,745 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 431 [2023-01-28 09:01:06,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:01:06,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:01:06,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:01:06,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:01:06,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:01:06,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:01:06,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:01:06,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:01:06,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (1/1) ... [2023-01-28 09:01:06,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:01:06,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:01:06,838 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 09:01:06,905 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 09:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:01:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:01:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:01:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:01:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:01:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:01:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:01:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:01:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:01:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:01:06,933 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 09:01:07,069 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:01:07,071 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:01:07,620 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:01:07,638 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:01:07,638 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 09:01:07,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:01:07 BoogieIcfgContainer [2023-01-28 09:01:07,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:01:07,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:01:07,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:01:07,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:01:07,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:01:06" (1/3) ... [2023-01-28 09:01:07,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c481e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:01:07, skipping insertion in model container [2023-01-28 09:01:07,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:06" (2/3) ... [2023-01-28 09:01:07,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c481e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:01:07, skipping insertion in model container [2023-01-28 09:01:07,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:01:07" (3/3) ... [2023-01-28 09:01:07,646 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-01-28 09:01:07,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:01:07,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:01:07,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:01:07,766 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:01:07,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 501 transitions, 1026 flow [2023-01-28 09:01:07,915 INFO L130 PetriNetUnfolder]: 41/498 cut-off events. [2023-01-28 09:01:07,915 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:01:07,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 41/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 643 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-01-28 09:01:07,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 501 transitions, 1026 flow [2023-01-28 09:01:07,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 488 transitions, 994 flow [2023-01-28 09:01:07,929 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:01:07,939 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 488 transitions, 994 flow [2023-01-28 09:01:07,941 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 488 transitions, 994 flow [2023-01-28 09:01:07,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 488 transitions, 994 flow [2023-01-28 09:01:08,001 INFO L130 PetriNetUnfolder]: 41/488 cut-off events. [2023-01-28 09:01:08,001 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:01:08,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 488 events. 41/488 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 642 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-01-28 09:01:08,012 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-01-28 09:01:20,979 INFO L134 LiptonReduction]: Checked pairs total: 21051 [2023-01-28 09:01:20,980 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-01-28 09:01:20,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:01:21,008 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;@52d4dc47, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:01:21,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:01:21,014 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-01-28 09:01:21,014 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:01:21,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:21,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:21,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:21,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash 558250822, now seen corresponding path program 1 times [2023-01-28 09:01:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:21,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579883536] [2023-01-28 09:01:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:21,305 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 09:01:21,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:21,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579883536] [2023-01-28 09:01:21,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579883536] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:21,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:21,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:01:21,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940759885] [2023-01-28 09:01:21,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:21,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 09:01:21,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 09:01:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 09:01:21,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1064 [2023-01-28 09:01:21,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states 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 09:01:21,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:21,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1064 [2023-01-28 09:01:21,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:21,485 INFO L130 PetriNetUnfolder]: 699/1048 cut-off events. [2023-01-28 09:01:21,486 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-01-28 09:01:21,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3691 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-01-28 09:01:21,491 INFO L137 encePairwiseOnDemand]: 1063/1064 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-01-28 09:01:21,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-01-28 09:01:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 09:01:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 09:01:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 972 transitions. [2023-01-28 09:01:21,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567669172932331 [2023-01-28 09:01:21,508 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 972 transitions. [2023-01-28 09:01:21,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 972 transitions. [2023-01-28 09:01:21,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:21,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 972 transitions. [2023-01-28 09:01:21,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 486.0) internal successors, (972), 2 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 09:01:21,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 09:01:21,524 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 09:01:21,525 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 972 transitions. [2023-01-28 09:01:21,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-01-28 09:01:21,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:01:21,531 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-01-28 09:01:21,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-01-28 09:01:21,537 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-01-28 09:01:21,537 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-01-28 09:01:21,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states 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 09:01:21,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:21,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:21,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:01:21,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:21,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:21,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2005961306, now seen corresponding path program 1 times [2023-01-28 09:01:21,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:21,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079724001] [2023-01-28 09:01:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:21,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:21,662 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 09:01:21,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:21,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079724001] [2023-01-28 09:01:21,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079724001] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:21,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:21,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:01:21,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019312207] [2023-01-28 09:01:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:21,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:01:21,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:21,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:01:21,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:01:21,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1064 [2023-01-28 09:01:21,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states 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 09:01:21,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:21,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1064 [2023-01-28 09:01:21,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:21,808 INFO L130 PetriNetUnfolder]: 789/1184 cut-off events. [2023-01-28 09:01:21,808 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 09:01:21,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4309 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-01-28 09:01:21,812 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-28 09:01:21,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-01-28 09:01:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:01:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:01:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2023-01-28 09:01:21,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44799498746867167 [2023-01-28 09:01:21,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2023-01-28 09:01:21,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2023-01-28 09:01:21,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:21,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2023-01-28 09:01:21,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states 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 09:01:21,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states 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 09:01:21,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states 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 09:01:21,823 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1430 transitions. [2023-01-28 09:01:21,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-01-28 09:01:21,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 09:01:21,825 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-01-28 09:01:21,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-01-28 09:01:21,825 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-01-28 09:01:21,826 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-01-28 09:01:21,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states 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 09:01:21,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:21,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:21,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:01:21,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:21,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:21,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2002543410, now seen corresponding path program 1 times [2023-01-28 09:01:21,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:21,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21658564] [2023-01-28 09:01:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:21,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:21,936 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 09:01:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21658564] [2023-01-28 09:01:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21658564] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:21,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:21,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:01:21,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783464222] [2023-01-28 09:01:21,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:21,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:01:21,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:21,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:01:21,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:01:21,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 1064 [2023-01-28 09:01:21,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 441.6666666666667) internal successors, (1325), 3 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 09:01:21,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:21,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 1064 [2023-01-28 09:01:21,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:22,094 INFO L130 PetriNetUnfolder]: 789/1185 cut-off events. [2023-01-28 09:01:22,095 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-01-28 09:01:22,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4292 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-01-28 09:01:22,099 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-01-28 09:01:22,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-01-28 09:01:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:01:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:01:22,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1339 transitions. [2023-01-28 09:01:22,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41948621553884713 [2023-01-28 09:01:22,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1339 transitions. [2023-01-28 09:01:22,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1339 transitions. [2023-01-28 09:01:22,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:22,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1339 transitions. [2023-01-28 09:01:22,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states 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 09:01:22,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states 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 09:01:22,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states 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 09:01:22,110 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1339 transitions. [2023-01-28 09:01:22,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-01-28 09:01:22,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:22,113 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-01-28 09:01:22,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-01-28 09:01:22,113 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-01-28 09:01:22,113 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-01-28 09:01:22,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 441.6666666666667) internal successors, (1325), 3 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 09:01:22,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:22,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:22,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:01:22,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:22,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash 283624533, now seen corresponding path program 1 times [2023-01-28 09:01:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:22,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662194867] [2023-01-28 09:01:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:01:22,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662194867] [2023-01-28 09:01:22,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662194867] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:22,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:22,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:01:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684964353] [2023-01-28 09:01:22,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:22,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:01:22,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:01:22,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:01:22,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 1064 [2023-01-28 09:01:22,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states 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 09:01:22,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:22,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 1064 [2023-01-28 09:01:22,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:22,371 INFO L130 PetriNetUnfolder]: 789/1186 cut-off events. [2023-01-28 09:01:22,371 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-28 09:01:22,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1185 conditions per place. [2023-01-28 09:01:22,376 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-01-28 09:01:22,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-01-28 09:01:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:01:22,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:01:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1723 transitions. [2023-01-28 09:01:22,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40484022556390975 [2023-01-28 09:01:22,379 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1723 transitions. [2023-01-28 09:01:22,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1723 transitions. [2023-01-28 09:01:22,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:22,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1723 transitions. [2023-01-28 09:01:22,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states 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 09:01:22,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:01:22,389 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:01:22,389 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 1723 transitions. [2023-01-28 09:01:22,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-01-28 09:01:22,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:22,391 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 122 flow [2023-01-28 09:01:22,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-01-28 09:01:22,392 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-01-28 09:01:22,392 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 122 flow [2023-01-28 09:01:22,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states 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 09:01:22,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:22,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:22,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:01:22,394 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:22,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:22,394 INFO L85 PathProgramCache]: Analyzing trace with hash 194249792, now seen corresponding path program 1 times [2023-01-28 09:01:22,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:22,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100024938] [2023-01-28 09:01:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:22,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 09:01:22,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:22,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100024938] [2023-01-28 09:01:22,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100024938] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:22,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:22,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:01:22,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431801377] [2023-01-28 09:01:22,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:22,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:01:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:01:22,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:01:22,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 1064 [2023-01-28 09:01:22,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:22,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:22,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 1064 [2023-01-28 09:01:22,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:22,651 INFO L130 PetriNetUnfolder]: 789/1187 cut-off events. [2023-01-28 09:01:22,651 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-28 09:01:22,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1187 events. 789/1187 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2677. Up to 1185 conditions per place. [2023-01-28 09:01:22,655 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-01-28 09:01:22,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 214 flow [2023-01-28 09:01:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:01:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:01:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2023-01-28 09:01:22,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050751879699248 [2023-01-28 09:01:22,659 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2023-01-28 09:01:22,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2023-01-28 09:01:22,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:22,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2023-01-28 09:01:22,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states 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 09:01:22,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:01:22,668 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:01:22,668 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 122 flow. Second operand 4 states and 1724 transitions. [2023-01-28 09:01:22,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 214 flow [2023-01-28 09:01:22,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:22,670 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-01-28 09:01:22,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-01-28 09:01:22,671 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-01-28 09:01:22,671 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-01-28 09:01:22,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:01:22,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:22,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:22,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:01:22,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:22,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:22,672 INFO L85 PathProgramCache]: Analyzing trace with hash 917435877, now seen corresponding path program 1 times [2023-01-28 09:01:22,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:22,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835286315] [2023-01-28 09:01:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:22,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:01:22,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:22,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835286315] [2023-01-28 09:01:22,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835286315] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:22,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:22,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:01:22,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123351590] [2023-01-28 09:01:22,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:01:22,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:22,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:01:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:01:22,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 09:01:22,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states 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 09:01:22,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:22,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 09:01:22,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:22,921 INFO L130 PetriNetUnfolder]: 789/1188 cut-off events. [2023-01-28 09:01:22,921 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-01-28 09:01:22,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1188 events. 789/1188 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2684. Up to 1187 conditions per place. [2023-01-28 09:01:22,926 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-01-28 09:01:22,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 228 flow [2023-01-28 09:01:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:01:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:01:22,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 09:01:22,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 09:01:22,929 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 09:01:22,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 09:01:22,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:22,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 09:01:22,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states 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 09:01:22,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:01:22,937 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:01:22,937 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 4 states and 1735 transitions. [2023-01-28 09:01:22,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 228 flow [2023-01-28 09:01:22,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:22,939 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 144 flow [2023-01-28 09:01:22,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-01-28 09:01:22,940 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-01-28 09:01:22,940 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 144 flow [2023-01-28 09:01:22,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states 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 09:01:22,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:22,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:22,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:01:22,941 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:22,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash -230399429, now seen corresponding path program 1 times [2023-01-28 09:01:22,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:22,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005534691] [2023-01-28 09:01:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:22,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:01:23,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:23,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005534691] [2023-01-28 09:01:23,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005534691] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:01:23,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976430902] [2023-01-28 09:01:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:23,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:01:23,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:01:23,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:01:23,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:01:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:23,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 09:01:23,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:01:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:23,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:01:23,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976430902] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:23,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:01:23,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-01-28 09:01:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109549987] [2023-01-28 09:01:23,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:23,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:01:23,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:23,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:01:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:23,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 09:01:23,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 09:01:23,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:23,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 09:01:23,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:23,496 INFO L130 PetriNetUnfolder]: 789/1189 cut-off events. [2023-01-28 09:01:23,496 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-28 09:01:23,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1189 events. 789/1189 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2690. Up to 1188 conditions per place. [2023-01-28 09:01:23,501 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-01-28 09:01:23,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 240 flow [2023-01-28 09:01:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:01:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:01:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 09:01:23,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 09:01:23,505 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 09:01:23,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 09:01:23,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:23,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 09:01:23,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states 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 09:01:23,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:01:23,514 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:01:23,514 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 144 flow. Second operand 4 states and 1735 transitions. [2023-01-28 09:01:23,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 240 flow [2023-01-28 09:01:23,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:23,516 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 152 flow [2023-01-28 09:01:23,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-01-28 09:01:23,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-01-28 09:01:23,517 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 152 flow [2023-01-28 09:01:23,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 09:01:23,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:23,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:23,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 09:01:23,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:01:23,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:23,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash 131576679, now seen corresponding path program 1 times [2023-01-28 09:01:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:23,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923095027] [2023-01-28 09:01:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:23,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 09:01:23,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:23,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923095027] [2023-01-28 09:01:23,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923095027] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:23,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:23,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:01:23,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364538561] [2023-01-28 09:01:23,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:23,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:01:23,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:01:23,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:01:23,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 09:01:23,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 431.5) internal successors, (1726), 4 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states 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 09:01:23,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:23,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 09:01:23,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:23,999 INFO L130 PetriNetUnfolder]: 789/1190 cut-off events. [2023-01-28 09:01:23,999 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-01-28 09:01:24,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1190 events. 789/1190 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4294 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2695. Up to 1189 conditions per place. [2023-01-28 09:01:24,004 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-01-28 09:01:24,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 250 flow [2023-01-28 09:01:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:01:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:01:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 09:01:24,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 09:01:24,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 09:01:24,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 09:01:24,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:24,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 09:01:24,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states 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 09:01:24,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:01:24,014 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:01:24,014 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 152 flow. Second operand 4 states and 1735 transitions. [2023-01-28 09:01:24,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 250 flow [2023-01-28 09:01:24,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:24,016 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 160 flow [2023-01-28 09:01:24,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-01-28 09:01:24,017 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-01-28 09:01:24,017 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 160 flow [2023-01-28 09:01:24,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.5) internal successors, (1726), 4 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states 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 09:01:24,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:24,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:24,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:01:24,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:24,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:24,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1404509908, now seen corresponding path program 1 times [2023-01-28 09:01:24,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:24,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268823510] [2023-01-28 09:01:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:24,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:25,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268823510] [2023-01-28 09:01:25,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268823510] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:25,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:25,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 09:01:25,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923986618] [2023-01-28 09:01:25,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:25,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 09:01:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 09:01:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:01:25,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 1064 [2023-01-28 09:01:25,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 160 flow. Second operand has 13 states, 13 states have (on average 365.6923076923077) internal successors, (4754), 13 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states 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 09:01:25,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:25,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 1064 [2023-01-28 09:01:25,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:26,911 INFO L130 PetriNetUnfolder]: 2057/3162 cut-off events. [2023-01-28 09:01:26,912 INFO L131 PetriNetUnfolder]: For 303/303 co-relation queries the response was YES. [2023-01-28 09:01:26,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7206 conditions, 3162 events. 2057/3162 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15935 event pairs, 304 based on Foata normal form. 1/2883 useless extension candidates. Maximal degree in co-relation 7195. Up to 1011 conditions per place. [2023-01-28 09:01:26,925 INFO L137 encePairwiseOnDemand]: 1051/1064 looper letters, 149 selfloop transitions, 11 changer transitions 7/167 dead transitions. [2023-01-28 09:01:26,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 167 transitions, 817 flow [2023-01-28 09:01:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 09:01:26,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 09:01:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4511 transitions. [2023-01-28 09:01:26,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35330513784461154 [2023-01-28 09:01:26,933 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4511 transitions. [2023-01-28 09:01:26,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4511 transitions. [2023-01-28 09:01:26,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:26,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4511 transitions. [2023-01-28 09:01:26,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 375.9166666666667) internal successors, (4511), 12 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states 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 09:01:26,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1064.0) internal successors, (13832), 13 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states 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 09:01:26,954 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1064.0) internal successors, (13832), 13 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states 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 09:01:26,954 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 160 flow. Second operand 12 states and 4511 transitions. [2023-01-28 09:01:26,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 167 transitions, 817 flow [2023-01-28 09:01:26,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 167 transitions, 811 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:26,965 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 216 flow [2023-01-28 09:01:26,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=216, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-01-28 09:01:26,966 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-01-28 09:01:26,966 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 216 flow [2023-01-28 09:01:26,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 365.6923076923077) internal successors, (4754), 13 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states 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 09:01:26,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:26,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:26,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:01:26,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:26,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2043930938, now seen corresponding path program 2 times [2023-01-28 09:01:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094520432] [2023-01-28 09:01:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:26,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:28,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:28,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094520432] [2023-01-28 09:01:28,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094520432] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:28,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:28,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:01:28,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109823270] [2023-01-28 09:01:28,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:28,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:01:28,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:01:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:01:28,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:01:28,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 09:01:28,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:28,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:01:28,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:29,918 INFO L130 PetriNetUnfolder]: 4081/6398 cut-off events. [2023-01-28 09:01:29,918 INFO L131 PetriNetUnfolder]: For 3403/3403 co-relation queries the response was YES. [2023-01-28 09:01:29,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16807 conditions, 6398 events. 4081/6398 cut-off events. For 3403/3403 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 38481 event pairs, 819 based on Foata normal form. 1/6398 useless extension candidates. Maximal degree in co-relation 16790. Up to 2803 conditions per place. [2023-01-28 09:01:29,954 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 134 selfloop transitions, 12 changer transitions 7/153 dead transitions. [2023-01-28 09:01:29,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 153 transitions, 837 flow [2023-01-28 09:01:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:01:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:01:29,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3616 transitions. [2023-01-28 09:01:29,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37761069340016706 [2023-01-28 09:01:29,961 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3616 transitions. [2023-01-28 09:01:29,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3616 transitions. [2023-01-28 09:01:29,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:29,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3616 transitions. [2023-01-28 09:01:29,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 401.77777777777777) internal successors, (3616), 9 states have internal predecessors, (3616), 0 states have call successors, (0), 0 states 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 09:01:29,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states 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 09:01:29,979 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states 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 09:01:29,979 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 216 flow. Second operand 9 states and 3616 transitions. [2023-01-28 09:01:29,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 153 transitions, 837 flow [2023-01-28 09:01:30,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 153 transitions, 804 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 09:01:30,005 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 307 flow [2023-01-28 09:01:30,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=307, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2023-01-28 09:01:30,007 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-01-28 09:01:30,007 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 307 flow [2023-01-28 09:01:30,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 09:01:30,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:30,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:30,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 09:01:30,009 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:30,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1268587720, now seen corresponding path program 3 times [2023-01-28 09:01:30,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:30,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528387790] [2023-01-28 09:01:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:30,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:31,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528387790] [2023-01-28 09:01:31,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528387790] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:31,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:31,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 09:01:31,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830258385] [2023-01-28 09:01:31,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:31,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 09:01:31,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:31,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 09:01:31,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-01-28 09:01:31,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 1064 [2023-01-28 09:01:31,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 307 flow. Second operand has 14 states, 14 states have (on average 354.5) internal successors, (4963), 14 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states 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 09:01:31,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:31,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 1064 [2023-01-28 09:01:31,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:34,516 INFO L130 PetriNetUnfolder]: 5335/8834 cut-off events. [2023-01-28 09:01:34,517 INFO L131 PetriNetUnfolder]: For 10406/10406 co-relation queries the response was YES. [2023-01-28 09:01:34,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26166 conditions, 8834 events. 5335/8834 cut-off events. For 10406/10406 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 60337 event pairs, 1122 based on Foata normal form. 1/8834 useless extension candidates. Maximal degree in co-relation 26143. Up to 2974 conditions per place. [2023-01-28 09:01:34,560 INFO L137 encePairwiseOnDemand]: 1046/1064 looper letters, 172 selfloop transitions, 64 changer transitions 7/243 dead transitions. [2023-01-28 09:01:34,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 243 transitions, 1590 flow [2023-01-28 09:01:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 09:01:34,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 09:01:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 6525 transitions. [2023-01-28 09:01:34,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3406954887218045 [2023-01-28 09:01:34,572 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 6525 transitions. [2023-01-28 09:01:34,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 6525 transitions. [2023-01-28 09:01:34,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:34,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 6525 transitions. [2023-01-28 09:01:34,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 362.5) internal successors, (6525), 18 states have internal predecessors, (6525), 0 states have call successors, (0), 0 states 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 09:01:34,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states 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 09:01:34,596 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states 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 09:01:34,596 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 307 flow. Second operand 18 states and 6525 transitions. [2023-01-28 09:01:34,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 243 transitions, 1590 flow [2023-01-28 09:01:34,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 243 transitions, 1580 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:34,644 INFO L231 Difference]: Finished difference. Result has 103 places, 123 transitions, 934 flow [2023-01-28 09:01:34,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=934, PETRI_PLACES=103, PETRI_TRANSITIONS=123} [2023-01-28 09:01:34,645 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2023-01-28 09:01:34,645 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 123 transitions, 934 flow [2023-01-28 09:01:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 354.5) internal successors, (4963), 14 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states 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 09:01:34,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:34,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:34,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 09:01:34,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:34,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1785788936, now seen corresponding path program 4 times [2023-01-28 09:01:34,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:34,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158175558] [2023-01-28 09:01:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:34,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:35,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:35,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158175558] [2023-01-28 09:01:35,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158175558] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:35,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:35,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:01:35,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674602479] [2023-01-28 09:01:35,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:35,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:01:35,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:01:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:01:35,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:01:35,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 123 transitions, 934 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 09:01:35,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:35,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:01:35,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:37,720 INFO L130 PetriNetUnfolder]: 5889/9930 cut-off events. [2023-01-28 09:01:37,720 INFO L131 PetriNetUnfolder]: For 28769/28769 co-relation queries the response was YES. [2023-01-28 09:01:37,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39219 conditions, 9930 events. 5889/9930 cut-off events. For 28769/28769 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 70810 event pairs, 1305 based on Foata normal form. 1/9930 useless extension candidates. Maximal degree in co-relation 39184. Up to 3953 conditions per place. [2023-01-28 09:01:37,779 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 274 selfloop transitions, 29 changer transitions 7/310 dead transitions. [2023-01-28 09:01:37,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 310 transitions, 2717 flow [2023-01-28 09:01:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:01:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:01:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3624 transitions. [2023-01-28 09:01:37,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37844611528822053 [2023-01-28 09:01:37,784 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3624 transitions. [2023-01-28 09:01:37,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3624 transitions. [2023-01-28 09:01:37,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:37,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3624 transitions. [2023-01-28 09:01:37,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.6666666666667) internal successors, (3624), 9 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states 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 09:01:37,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states 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 09:01:37,800 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states 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 09:01:37,800 INFO L175 Difference]: Start difference. First operand has 103 places, 123 transitions, 934 flow. Second operand 9 states and 3624 transitions. [2023-01-28 09:01:37,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 310 transitions, 2717 flow [2023-01-28 09:01:37,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 310 transitions, 2638 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-01-28 09:01:37,992 INFO L231 Difference]: Finished difference. Result has 113 places, 132 transitions, 1121 flow [2023-01-28 09:01:37,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1121, PETRI_PLACES=113, PETRI_TRANSITIONS=132} [2023-01-28 09:01:37,993 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-01-28 09:01:37,993 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 132 transitions, 1121 flow [2023-01-28 09:01:37,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 09:01:37,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:37,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:37,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 09:01:37,995 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:37,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:37,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1312490772, now seen corresponding path program 5 times [2023-01-28 09:01:37,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:37,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701167576] [2023-01-28 09:01:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:37,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:39,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:39,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701167576] [2023-01-28 09:01:39,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701167576] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:39,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:39,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:01:39,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089621332] [2023-01-28 09:01:39,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:39,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:01:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:01:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:01:39,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 09:01:39,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 132 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:01:39,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:39,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 09:01:39,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:42,634 INFO L130 PetriNetUnfolder]: 6944/11873 cut-off events. [2023-01-28 09:01:42,634 INFO L131 PetriNetUnfolder]: For 44867/44867 co-relation queries the response was YES. [2023-01-28 09:01:42,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48976 conditions, 11873 events. 6944/11873 cut-off events. For 44867/44867 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 87849 event pairs, 1776 based on Foata normal form. 1/11873 useless extension candidates. Maximal degree in co-relation 48935. Up to 6148 conditions per place. [2023-01-28 09:01:42,718 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 230 selfloop transitions, 43 changer transitions 7/280 dead transitions. [2023-01-28 09:01:42,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 280 transitions, 2693 flow [2023-01-28 09:01:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:01:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:01:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3893 transitions. [2023-01-28 09:01:42,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36588345864661653 [2023-01-28 09:01:42,724 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3893 transitions. [2023-01-28 09:01:42,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3893 transitions. [2023-01-28 09:01:42,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:42,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3893 transitions. [2023-01-28 09:01:42,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 389.3) internal successors, (3893), 10 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states 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 09:01:42,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states 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 09:01:42,736 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states 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 09:01:42,736 INFO L175 Difference]: Start difference. First operand has 113 places, 132 transitions, 1121 flow. Second operand 10 states and 3893 transitions. [2023-01-28 09:01:42,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 280 transitions, 2693 flow [2023-01-28 09:01:42,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 280 transitions, 2634 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:42,982 INFO L231 Difference]: Finished difference. Result has 127 places, 145 transitions, 1393 flow [2023-01-28 09:01:42,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1393, PETRI_PLACES=127, PETRI_TRANSITIONS=145} [2023-01-28 09:01:42,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-01-28 09:01:42,984 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 145 transitions, 1393 flow [2023-01-28 09:01:42,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:01:42,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:42,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:42,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 09:01:42,985 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:42,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1161360985, now seen corresponding path program 1 times [2023-01-28 09:01:42,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:42,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611322543] [2023-01-28 09:01:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:42,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:43,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611322543] [2023-01-28 09:01:43,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611322543] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:43,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:43,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:01:43,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590852604] [2023-01-28 09:01:43,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:43,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:01:43,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:01:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:01:43,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1064 [2023-01-28 09:01:43,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 145 transitions, 1393 flow. Second operand has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 09:01:43,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:43,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1064 [2023-01-28 09:01:43,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:45,181 INFO L130 PetriNetUnfolder]: 9347/16523 cut-off events. [2023-01-28 09:01:45,182 INFO L131 PetriNetUnfolder]: For 86663/86663 co-relation queries the response was YES. [2023-01-28 09:01:45,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70143 conditions, 16523 events. 9347/16523 cut-off events. For 86663/86663 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 135666 event pairs, 3438 based on Foata normal form. 248/16770 useless extension candidates. Maximal degree in co-relation 70095. Up to 8790 conditions per place. [2023-01-28 09:01:45,315 INFO L137 encePairwiseOnDemand]: 1058/1064 looper letters, 258 selfloop transitions, 24 changer transitions 0/282 dead transitions. [2023-01-28 09:01:45,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 282 transitions, 3368 flow [2023-01-28 09:01:45,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:01:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:01:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2176 transitions. [2023-01-28 09:01:45,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40902255639097745 [2023-01-28 09:01:45,319 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2176 transitions. [2023-01-28 09:01:45,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2176 transitions. [2023-01-28 09:01:45,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:45,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2176 transitions. [2023-01-28 09:01:45,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 435.2) internal successors, (2176), 5 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states 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 09:01:45,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1064.0) internal successors, (6384), 6 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states 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 09:01:45,325 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1064.0) internal successors, (6384), 6 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states 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 09:01:45,325 INFO L175 Difference]: Start difference. First operand has 127 places, 145 transitions, 1393 flow. Second operand 5 states and 2176 transitions. [2023-01-28 09:01:45,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 282 transitions, 3368 flow [2023-01-28 09:01:45,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 282 transitions, 3274 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:45,842 INFO L231 Difference]: Finished difference. Result has 132 places, 159 transitions, 1617 flow [2023-01-28 09:01:45,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1617, PETRI_PLACES=132, PETRI_TRANSITIONS=159} [2023-01-28 09:01:45,843 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2023-01-28 09:01:45,843 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 159 transitions, 1617 flow [2023-01-28 09:01:45,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 09:01:45,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:45,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:45,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 09:01:45,843 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:45,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:45,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1918445084, now seen corresponding path program 6 times [2023-01-28 09:01:45,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:45,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064464244] [2023-01-28 09:01:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:45,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:47,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:47,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064464244] [2023-01-28 09:01:47,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064464244] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:47,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:47,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 09:01:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885550245] [2023-01-28 09:01:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:47,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 09:01:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 09:01:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:01:47,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 360 out of 1064 [2023-01-28 09:01:47,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 159 transitions, 1617 flow. Second operand has 13 states, 13 states have (on average 362.6923076923077) internal successors, (4715), 13 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states 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 09:01:47,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:47,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 360 of 1064 [2023-01-28 09:01:47,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:51,527 INFO L130 PetriNetUnfolder]: 9370/16593 cut-off events. [2023-01-28 09:01:51,527 INFO L131 PetriNetUnfolder]: For 85888/85888 co-relation queries the response was YES. [2023-01-28 09:01:51,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75956 conditions, 16593 events. 9370/16593 cut-off events. For 85888/85888 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 136810 event pairs, 1154 based on Foata normal form. 1/16593 useless extension candidates. Maximal degree in co-relation 75906. Up to 5499 conditions per place. [2023-01-28 09:01:51,647 INFO L137 encePairwiseOnDemand]: 1049/1064 looper letters, 260 selfloop transitions, 130 changer transitions 7/397 dead transitions. [2023-01-28 09:01:51,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 397 transitions, 4114 flow [2023-01-28 09:01:51,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 09:01:51,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 09:01:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 6690 transitions. [2023-01-28 09:01:51,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3493107769423559 [2023-01-28 09:01:51,656 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 6690 transitions. [2023-01-28 09:01:51,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 6690 transitions. [2023-01-28 09:01:51,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:51,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 6690 transitions. [2023-01-28 09:01:51,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 371.6666666666667) internal successors, (6690), 18 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states 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 09:01:51,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states 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 09:01:51,676 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states 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 09:01:51,676 INFO L175 Difference]: Start difference. First operand has 132 places, 159 transitions, 1617 flow. Second operand 18 states and 6690 transitions. [2023-01-28 09:01:51,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 397 transitions, 4114 flow [2023-01-28 09:01:52,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 397 transitions, 4110 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 09:01:52,297 INFO L231 Difference]: Finished difference. Result has 157 places, 222 transitions, 2668 flow [2023-01-28 09:01:52,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2668, PETRI_PLACES=157, PETRI_TRANSITIONS=222} [2023-01-28 09:01:52,297 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2023-01-28 09:01:52,297 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 222 transitions, 2668 flow [2023-01-28 09:01:52,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 362.6923076923077) internal successors, (4715), 13 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states 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 09:01:52,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:52,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:52,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 09:01:52,298 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:52,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:52,299 INFO L85 PathProgramCache]: Analyzing trace with hash -605776418, now seen corresponding path program 7 times [2023-01-28 09:01:52,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:52,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336929461] [2023-01-28 09:01:52,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:52,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:53,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:53,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336929461] [2023-01-28 09:01:53,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336929461] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:53,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:53,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:01:53,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666722773] [2023-01-28 09:01:53,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:53,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:01:53,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:01:53,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:01:53,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 09:01:53,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 222 transitions, 2668 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:01:53,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:53,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 09:01:53,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:56,486 INFO L130 PetriNetUnfolder]: 9569/17260 cut-off events. [2023-01-28 09:01:56,486 INFO L131 PetriNetUnfolder]: For 124559/124559 co-relation queries the response was YES. [2023-01-28 09:01:56,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86201 conditions, 17260 events. 9569/17260 cut-off events. For 124559/124559 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 146290 event pairs, 2246 based on Foata normal form. 1/17260 useless extension candidates. Maximal degree in co-relation 86142. Up to 6581 conditions per place. [2023-01-28 09:01:56,690 INFO L137 encePairwiseOnDemand]: 1052/1064 looper letters, 325 selfloop transitions, 99 changer transitions 8/432 dead transitions. [2023-01-28 09:01:56,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 432 transitions, 5698 flow [2023-01-28 09:01:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:01:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:01:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3905 transitions. [2023-01-28 09:01:56,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36701127819548873 [2023-01-28 09:01:56,697 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3905 transitions. [2023-01-28 09:01:56,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3905 transitions. [2023-01-28 09:01:56,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:56,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3905 transitions. [2023-01-28 09:01:56,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 390.5) internal successors, (3905), 10 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states 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 09:01:56,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states 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 09:01:56,707 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states 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 09:01:56,707 INFO L175 Difference]: Start difference. First operand has 157 places, 222 transitions, 2668 flow. Second operand 10 states and 3905 transitions. [2023-01-28 09:01:56,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 432 transitions, 5698 flow [2023-01-28 09:01:57,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 432 transitions, 5582 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-01-28 09:01:57,825 INFO L231 Difference]: Finished difference. Result has 167 places, 267 transitions, 3618 flow [2023-01-28 09:01:57,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3618, PETRI_PLACES=167, PETRI_TRANSITIONS=267} [2023-01-28 09:01:57,825 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2023-01-28 09:01:57,825 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 267 transitions, 3618 flow [2023-01-28 09:01:57,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:01:57,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:57,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:57,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 09:01:57,826 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:01:57,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:57,826 INFO L85 PathProgramCache]: Analyzing trace with hash -948365568, now seen corresponding path program 8 times [2023-01-28 09:01:57,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:57,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796634260] [2023-01-28 09:01:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:57,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:01:58,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:58,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796634260] [2023-01-28 09:01:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796634260] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:58,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:58,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 09:01:58,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45852156] [2023-01-28 09:01:58,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:58,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 09:01:58,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 09:01:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-01-28 09:01:58,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 1064 [2023-01-28 09:01:58,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 267 transitions, 3618 flow. Second operand has 14 states, 14 states have (on average 354.5) internal successors, (4963), 14 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states 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 09:01:58,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:58,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 1064 [2023-01-28 09:01:58,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:02,114 INFO L130 PetriNetUnfolder]: 9564/17247 cut-off events. [2023-01-28 09:02:02,114 INFO L131 PetriNetUnfolder]: For 152468/152468 co-relation queries the response was YES. [2023-01-28 09:02:02,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93023 conditions, 17247 events. 9564/17247 cut-off events. For 152468/152468 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 145908 event pairs, 3027 based on Foata normal form. 1/17247 useless extension candidates. Maximal degree in co-relation 92958. Up to 8681 conditions per place. [2023-01-28 09:02:02,433 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 317 selfloop transitions, 86 changer transitions 8/411 dead transitions. [2023-01-28 09:02:02,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 411 transitions, 5896 flow [2023-01-28 09:02:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 09:02:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 09:02:02,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4722 transitions. [2023-01-28 09:02:02,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3413823019086177 [2023-01-28 09:02:02,439 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4722 transitions. [2023-01-28 09:02:02,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4722 transitions. [2023-01-28 09:02:02,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:02,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4722 transitions. [2023-01-28 09:02:02,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 363.2307692307692) internal successors, (4722), 13 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states 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 09:02:02,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1064.0) internal successors, (14896), 14 states have internal predecessors, (14896), 0 states have call successors, (0), 0 states 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 09:02:02,657 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1064.0) internal successors, (14896), 14 states have internal predecessors, (14896), 0 states have call successors, (0), 0 states 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 09:02:02,657 INFO L175 Difference]: Start difference. First operand has 167 places, 267 transitions, 3618 flow. Second operand 13 states and 4722 transitions. [2023-01-28 09:02:02,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 411 transitions, 5896 flow [2023-01-28 09:02:03,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 411 transitions, 5684 flow, removed 64 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:03,967 INFO L231 Difference]: Finished difference. Result has 181 places, 289 transitions, 4154 flow [2023-01-28 09:02:03,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4154, PETRI_PLACES=181, PETRI_TRANSITIONS=289} [2023-01-28 09:02:03,967 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 139 predicate places. [2023-01-28 09:02:03,967 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 289 transitions, 4154 flow [2023-01-28 09:02:03,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 354.5) internal successors, (4963), 14 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states 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 09:02:03,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:03,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:03,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 09:02:03,968 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:03,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash -770924642, now seen corresponding path program 9 times [2023-01-28 09:02:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:03,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075844226] [2023-01-28 09:02:03,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:03,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:05,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:05,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075844226] [2023-01-28 09:02:05,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075844226] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:05,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:05,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:02:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532822151] [2023-01-28 09:02:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:05,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:02:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:02:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:02:05,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:02:05,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 289 transitions, 4154 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 09:02:05,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:05,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:02:05,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:08,971 INFO L130 PetriNetUnfolder]: 11008/19865 cut-off events. [2023-01-28 09:02:08,972 INFO L131 PetriNetUnfolder]: For 190407/190407 co-relation queries the response was YES. [2023-01-28 09:02:09,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108701 conditions, 19865 events. 11008/19865 cut-off events. For 190407/190407 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 171512 event pairs, 2564 based on Foata normal form. 1/19865 useless extension candidates. Maximal degree in co-relation 108631. Up to 9344 conditions per place. [2023-01-28 09:02:09,231 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 423 selfloop transitions, 78 changer transitions 7/508 dead transitions. [2023-01-28 09:02:09,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 508 transitions, 7584 flow [2023-01-28 09:02:09,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:02:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:02:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3631 transitions. [2023-01-28 09:02:09,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37917710944026733 [2023-01-28 09:02:09,236 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3631 transitions. [2023-01-28 09:02:09,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3631 transitions. [2023-01-28 09:02:09,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:09,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3631 transitions. [2023-01-28 09:02:09,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.44444444444446) internal successors, (3631), 9 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states 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 09:02:09,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states 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 09:02:09,245 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states 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 09:02:09,246 INFO L175 Difference]: Start difference. First operand has 181 places, 289 transitions, 4154 flow. Second operand 9 states and 3631 transitions. [2023-01-28 09:02:09,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 508 transitions, 7584 flow [2023-01-28 09:02:11,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 508 transitions, 7380 flow, removed 26 selfloop flow, removed 7 redundant places. [2023-01-28 09:02:11,438 INFO L231 Difference]: Finished difference. Result has 187 places, 314 transitions, 4730 flow [2023-01-28 09:02:11,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4037, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4730, PETRI_PLACES=187, PETRI_TRANSITIONS=314} [2023-01-28 09:02:11,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 145 predicate places. [2023-01-28 09:02:11,439 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 314 transitions, 4730 flow [2023-01-28 09:02:11,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 09:02:11,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:11,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:11,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 09:02:11,439 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:11,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:11,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1701044426, now seen corresponding path program 10 times [2023-01-28 09:02:11,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:11,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303881397] [2023-01-28 09:02:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:11,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:12,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:12,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303881397] [2023-01-28 09:02:12,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303881397] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:12,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:12,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 09:02:12,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566993729] [2023-01-28 09:02:12,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:12,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:02:12,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:12,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:02:12,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-01-28 09:02:12,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 1064 [2023-01-28 09:02:12,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 314 transitions, 4730 flow. Second operand has 12 states, 12 states have (on average 373.9166666666667) internal successors, (4487), 12 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states 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 09:02:12,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:12,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 1064 [2023-01-28 09:02:12,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:17,471 INFO L130 PetriNetUnfolder]: 12254/22399 cut-off events. [2023-01-28 09:02:17,472 INFO L131 PetriNetUnfolder]: For 212135/212135 co-relation queries the response was YES. [2023-01-28 09:02:17,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121963 conditions, 22399 events. 12254/22399 cut-off events. For 212135/212135 co-relation queries the response was YES. Maximal size of possible extension queue 1498. Compared 199758 event pairs, 2513 based on Foata normal form. 1/22399 useless extension candidates. Maximal degree in co-relation 121888. Up to 9772 conditions per place. [2023-01-28 09:02:17,668 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 429 selfloop transitions, 53 changer transitions 7/489 dead transitions. [2023-01-28 09:02:17,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 489 transitions, 7616 flow [2023-01-28 09:02:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:02:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:02:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4216 transitions. [2023-01-28 09:02:17,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36021872863978127 [2023-01-28 09:02:17,687 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4216 transitions. [2023-01-28 09:02:17,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4216 transitions. [2023-01-28 09:02:17,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:17,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4216 transitions. [2023-01-28 09:02:17,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 383.27272727272725) internal successors, (4216), 11 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states 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 09:02:17,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states 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 09:02:17,712 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states 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 09:02:17,712 INFO L175 Difference]: Start difference. First operand has 187 places, 314 transitions, 4730 flow. Second operand 11 states and 4216 transitions. [2023-01-28 09:02:17,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 489 transitions, 7616 flow [2023-01-28 09:02:19,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 489 transitions, 7476 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:19,915 INFO L231 Difference]: Finished difference. Result has 199 places, 324 transitions, 4988 flow [2023-01-28 09:02:19,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4628, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4988, PETRI_PLACES=199, PETRI_TRANSITIONS=324} [2023-01-28 09:02:19,918 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-01-28 09:02:19,918 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 324 transitions, 4988 flow [2023-01-28 09:02:19,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 373.9166666666667) internal successors, (4487), 12 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states 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 09:02:19,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:19,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:19,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 09:02:19,919 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:19,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:19,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1165370582, now seen corresponding path program 11 times [2023-01-28 09:02:19,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:19,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245266993] [2023-01-28 09:02:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:19,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:20,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245266993] [2023-01-28 09:02:20,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245266993] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:20,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:20,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:02:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961111854] [2023-01-28 09:02:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:20,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:02:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:02:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:02:20,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 09:02:20,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 324 transitions, 4988 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:02:20,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:20,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 09:02:20,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:27,292 INFO L130 PetriNetUnfolder]: 16860/30772 cut-off events. [2023-01-28 09:02:27,292 INFO L131 PetriNetUnfolder]: For 347694/347694 co-relation queries the response was YES. [2023-01-28 09:02:27,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170136 conditions, 30772 events. 16860/30772 cut-off events. For 347694/347694 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 285896 event pairs, 4772 based on Foata normal form. 2/30773 useless extension candidates. Maximal degree in co-relation 170056. Up to 10862 conditions per place. [2023-01-28 09:02:27,935 INFO L137 encePairwiseOnDemand]: 1052/1064 looper letters, 603 selfloop transitions, 152 changer transitions 16/771 dead transitions. [2023-01-28 09:02:27,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 771 transitions, 11672 flow [2023-01-28 09:02:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 09:02:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 09:02:27,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6642 transitions. [2023-01-28 09:02:27,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3672047766475011 [2023-01-28 09:02:27,954 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6642 transitions. [2023-01-28 09:02:27,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6642 transitions. [2023-01-28 09:02:27,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:27,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6642 transitions. [2023-01-28 09:02:27,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 390.70588235294116) internal successors, (6642), 17 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states 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 09:02:27,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states 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 09:02:27,989 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states 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 09:02:27,989 INFO L175 Difference]: Start difference. First operand has 199 places, 324 transitions, 4988 flow. Second operand 17 states and 6642 transitions. [2023-01-28 09:02:27,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 771 transitions, 11672 flow [2023-01-28 09:02:31,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 771 transitions, 11503 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-01-28 09:02:31,525 INFO L231 Difference]: Finished difference. Result has 224 places, 404 transitions, 6993 flow [2023-01-28 09:02:31,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4910, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6993, PETRI_PLACES=224, PETRI_TRANSITIONS=404} [2023-01-28 09:02:31,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2023-01-28 09:02:31,525 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 404 transitions, 6993 flow [2023-01-28 09:02:31,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:02:31,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:31,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:31,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 09:02:31,526 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:31,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:31,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1478290662, now seen corresponding path program 12 times [2023-01-28 09:02:31,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:31,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989439054] [2023-01-28 09:02:31,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:31,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:32,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:32,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989439054] [2023-01-28 09:02:32,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989439054] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:32,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:32,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 09:02:32,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075727537] [2023-01-28 09:02:32,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:32,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 09:02:32,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:32,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 09:02:32,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:02:32,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 1064 [2023-01-28 09:02:32,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 404 transitions, 6993 flow. Second operand has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states 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 09:02:32,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:32,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 1064 [2023-01-28 09:02:32,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:02:42,551 INFO L130 PetriNetUnfolder]: 24515/44858 cut-off events. [2023-01-28 09:02:42,551 INFO L131 PetriNetUnfolder]: For 528886/528886 co-relation queries the response was YES. [2023-01-28 09:02:43,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257531 conditions, 44858 events. 24515/44858 cut-off events. For 528886/528886 co-relation queries the response was YES. Maximal size of possible extension queue 3065. Compared 443078 event pairs, 8839 based on Foata normal form. 2/44859 useless extension candidates. Maximal degree in co-relation 257437. Up to 19099 conditions per place. [2023-01-28 09:02:43,468 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 734 selfloop transitions, 100 changer transitions 7/841 dead transitions. [2023-01-28 09:02:43,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 841 transitions, 15062 flow [2023-01-28 09:02:43,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:02:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:02:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3808 transitions. [2023-01-28 09:02:43,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35789473684210527 [2023-01-28 09:02:43,471 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3808 transitions. [2023-01-28 09:02:43,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3808 transitions. [2023-01-28 09:02:43,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:02:43,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3808 transitions. [2023-01-28 09:02:43,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 380.8) internal successors, (3808), 10 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states 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 09:02:43,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states 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 09:02:43,507 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states 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 09:02:43,507 INFO L175 Difference]: Start difference. First operand has 224 places, 404 transitions, 6993 flow. Second operand 10 states and 3808 transitions. [2023-01-28 09:02:43,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 841 transitions, 15062 flow [2023-01-28 09:02:53,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 841 transitions, 14769 flow, removed 98 selfloop flow, removed 3 redundant places. [2023-01-28 09:02:53,142 INFO L231 Difference]: Finished difference. Result has 235 places, 467 transitions, 8600 flow [2023-01-28 09:02:53,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=6779, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8600, PETRI_PLACES=235, PETRI_TRANSITIONS=467} [2023-01-28 09:02:53,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2023-01-28 09:02:53,143 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 467 transitions, 8600 flow [2023-01-28 09:02:53,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states 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 09:02:53,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:02:53,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:02:53,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 09:02:53,143 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:02:53,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:02:53,144 INFO L85 PathProgramCache]: Analyzing trace with hash -447950648, now seen corresponding path program 13 times [2023-01-28 09:02:53,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:02:53,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494686420] [2023-01-28 09:02:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:02:53,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:02:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:02:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:02:54,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:02:54,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494686420] [2023-01-28 09:02:54,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494686420] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:02:54,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:02:54,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:02:54,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666032494] [2023-01-28 09:02:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:02:54,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:02:54,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:02:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:02:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:02:54,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 1064 [2023-01-28 09:02:54,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 467 transitions, 8600 flow. Second operand has 10 states, 10 states have (on average 369.5) internal successors, (3695), 10 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states 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 09:02:54,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:02:54,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 1064 [2023-01-28 09:02:54,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:08,227 INFO L130 PetriNetUnfolder]: 30871/56791 cut-off events. [2023-01-28 09:03:08,227 INFO L131 PetriNetUnfolder]: For 739638/739638 co-relation queries the response was YES. [2023-01-28 09:03:09,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332116 conditions, 56791 events. 30871/56791 cut-off events. For 739638/739638 co-relation queries the response was YES. Maximal size of possible extension queue 3875. Compared 581275 event pairs, 12627 based on Foata normal form. 2/56792 useless extension candidates. Maximal degree in co-relation 332017. Up to 28003 conditions per place. [2023-01-28 09:03:09,565 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 876 selfloop transitions, 160 changer transitions 14/1050 dead transitions. [2023-01-28 09:03:09,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1050 transitions, 18904 flow [2023-01-28 09:03:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 09:03:09,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 09:03:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6099 transitions. [2023-01-28 09:03:09,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35825892857142855 [2023-01-28 09:03:09,571 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6099 transitions. [2023-01-28 09:03:09,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6099 transitions. [2023-01-28 09:03:09,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:09,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6099 transitions. [2023-01-28 09:03:09,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 381.1875) internal successors, (6099), 16 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states 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 09:03:09,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1064.0) internal successors, (18088), 17 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states 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 09:03:09,584 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1064.0) internal successors, (18088), 17 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states 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 09:03:09,584 INFO L175 Difference]: Start difference. First operand has 235 places, 467 transitions, 8600 flow. Second operand 16 states and 6099 transitions. [2023-01-28 09:03:09,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 1050 transitions, 18904 flow [2023-01-28 09:03:26,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1050 transitions, 18683 flow, removed 101 selfloop flow, removed 3 redundant places. [2023-01-28 09:03:26,906 INFO L231 Difference]: Finished difference. Result has 259 places, 528 transitions, 10555 flow [2023-01-28 09:03:26,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=8521, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10555, PETRI_PLACES=259, PETRI_TRANSITIONS=528} [2023-01-28 09:03:26,908 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2023-01-28 09:03:26,908 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 528 transitions, 10555 flow [2023-01-28 09:03:26,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 369.5) internal successors, (3695), 10 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states 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 09:03:26,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:03:26,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:03:26,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 09:03:26,921 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:03:26,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:03:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1864998854, now seen corresponding path program 14 times [2023-01-28 09:03:26,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:03:26,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114848602] [2023-01-28 09:03:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:03:26,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:03:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:03:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:03:27,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:03:27,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114848602] [2023-01-28 09:03:27,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114848602] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:03:27,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:03:27,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:03:27,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237058795] [2023-01-28 09:03:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:03:27,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:03:27,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:03:27,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:03:27,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:03:27,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 09:03:27,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 528 transitions, 10555 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:03:27,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:03:27,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 09:03:27,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:03:43,144 INFO L130 PetriNetUnfolder]: 30869/56774 cut-off events. [2023-01-28 09:03:43,145 INFO L131 PetriNetUnfolder]: For 803964/803964 co-relation queries the response was YES. [2023-01-28 09:03:44,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339350 conditions, 56774 events. 30869/56774 cut-off events. For 803964/803964 co-relation queries the response was YES. Maximal size of possible extension queue 3873. Compared 581699 event pairs, 9335 based on Foata normal form. 1/56774 useless extension candidates. Maximal degree in co-relation 339239. Up to 26768 conditions per place. [2023-01-28 09:03:44,645 INFO L137 encePairwiseOnDemand]: 1049/1064 looper letters, 429 selfloop transitions, 460 changer transitions 7/896 dead transitions. [2023-01-28 09:03:44,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 896 transitions, 17622 flow [2023-01-28 09:03:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 09:03:44,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 09:03:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 5833 transitions. [2023-01-28 09:03:44,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36547619047619045 [2023-01-28 09:03:44,650 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 5833 transitions. [2023-01-28 09:03:44,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 5833 transitions. [2023-01-28 09:03:44,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:03:44,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 5833 transitions. [2023-01-28 09:03:44,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 388.8666666666667) internal successors, (5833), 15 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states 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 09:03:44,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states 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 09:03:44,663 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states 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 09:03:44,663 INFO L175 Difference]: Start difference. First operand has 259 places, 528 transitions, 10555 flow. Second operand 15 states and 5833 transitions. [2023-01-28 09:03:44,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 896 transitions, 17622 flow [2023-01-28 09:04:03,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 896 transitions, 17479 flow, removed 71 selfloop flow, removed 3 redundant places. [2023-01-28 09:04:03,272 INFO L231 Difference]: Finished difference. Result has 276 places, 702 transitions, 14937 flow [2023-01-28 09:04:03,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=10450, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14937, PETRI_PLACES=276, PETRI_TRANSITIONS=702} [2023-01-28 09:04:03,273 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2023-01-28 09:04:03,273 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 702 transitions, 14937 flow [2023-01-28 09:04:03,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:04:03,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:03,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:03,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 09:04:03,273 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:04:03,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1317815394, now seen corresponding path program 15 times [2023-01-28 09:04:03,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:03,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968739603] [2023-01-28 09:04:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:03,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:04,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:04,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968739603] [2023-01-28 09:04:04,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968739603] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:04,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:04,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:04:04,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253529852] [2023-01-28 09:04:04,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:04,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:04:04,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:04,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:04:04,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:04:04,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:04:04,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 702 transitions, 14937 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 09:04:04,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:04,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:04:04,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:04:21,665 INFO L130 PetriNetUnfolder]: 33320/61333 cut-off events. [2023-01-28 09:04:21,666 INFO L131 PetriNetUnfolder]: For 1000612/1000612 co-relation queries the response was YES. [2023-01-28 09:04:23,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386771 conditions, 61333 events. 33320/61333 cut-off events. For 1000612/1000612 co-relation queries the response was YES. Maximal size of possible extension queue 4178. Compared 633571 event pairs, 13362 based on Foata normal form. 2/61334 useless extension candidates. Maximal degree in co-relation 386654. Up to 28004 conditions per place. [2023-01-28 09:04:23,581 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1005 selfloop transitions, 211 changer transitions 16/1232 dead transitions. [2023-01-28 09:04:23,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1232 transitions, 25059 flow [2023-01-28 09:04:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 09:04:23,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 09:04:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6055 transitions. [2023-01-28 09:04:23,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793859649122807 [2023-01-28 09:04:23,586 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6055 transitions. [2023-01-28 09:04:23,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6055 transitions. [2023-01-28 09:04:23,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:04:23,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6055 transitions. [2023-01-28 09:04:23,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 403.6666666666667) internal successors, (6055), 15 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states 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 09:04:23,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states 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 09:04:23,599 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states 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 09:04:23,599 INFO L175 Difference]: Start difference. First operand has 276 places, 702 transitions, 14937 flow. Second operand 15 states and 6055 transitions. [2023-01-28 09:04:23,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1232 transitions, 25059 flow [2023-01-28 09:04:53,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1232 transitions, 24749 flow, removed 155 selfloop flow, removed 1 redundant places. [2023-01-28 09:04:53,159 INFO L231 Difference]: Finished difference. Result has 298 places, 749 transitions, 16646 flow [2023-01-28 09:04:53,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=14759, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16646, PETRI_PLACES=298, PETRI_TRANSITIONS=749} [2023-01-28 09:04:53,160 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2023-01-28 09:04:53,160 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 749 transitions, 16646 flow [2023-01-28 09:04:53,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 09:04:53,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:04:53,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:04:53,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-28 09:04:53,160 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:04:53,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:04:53,161 INFO L85 PathProgramCache]: Analyzing trace with hash 178866192, now seen corresponding path program 16 times [2023-01-28 09:04:53,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:04:53,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366006455] [2023-01-28 09:04:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:04:53,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:04:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:04:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:04:53,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:04:53,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366006455] [2023-01-28 09:04:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366006455] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:04:53,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:04:53,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:04:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756349077] [2023-01-28 09:04:53,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:04:53,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:04:53,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:04:53,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:04:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:04:53,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 09:04:53,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 749 transitions, 16646 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:04:53,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:04:53,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 09:04:53,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:05:12,664 INFO L130 PetriNetUnfolder]: 33317/61347 cut-off events. [2023-01-28 09:05:12,664 INFO L131 PetriNetUnfolder]: For 1014682/1014682 co-relation queries the response was YES. [2023-01-28 09:05:14,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389198 conditions, 61347 events. 33317/61347 cut-off events. For 1014682/1014682 co-relation queries the response was YES. Maximal size of possible extension queue 4180. Compared 634775 event pairs, 11205 based on Foata normal form. 1/61347 useless extension candidates. Maximal degree in co-relation 389071. Up to 28119 conditions per place. [2023-01-28 09:05:14,355 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 403 selfloop transitions, 518 changer transitions 7/928 dead transitions. [2023-01-28 09:05:14,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 928 transitions, 20423 flow [2023-01-28 09:05:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 09:05:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 09:05:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 5842 transitions. [2023-01-28 09:05:14,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36604010025062655 [2023-01-28 09:05:14,387 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 5842 transitions. [2023-01-28 09:05:14,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 5842 transitions. [2023-01-28 09:05:14,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:05:14,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 5842 transitions. [2023-01-28 09:05:14,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 389.46666666666664) internal successors, (5842), 15 states have internal predecessors, (5842), 0 states have call successors, (0), 0 states 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 09:05:14,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states 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 09:05:14,398 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states 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 09:05:14,398 INFO L175 Difference]: Start difference. First operand has 298 places, 749 transitions, 16646 flow. Second operand 15 states and 5842 transitions. [2023-01-28 09:05:14,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 928 transitions, 20423 flow [2023-01-28 09:05:40,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 928 transitions, 19968 flow, removed 94 selfloop flow, removed 6 redundant places. [2023-01-28 09:05:40,307 INFO L231 Difference]: Finished difference. Result has 311 places, 768 transitions, 18052 flow [2023-01-28 09:05:40,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16215, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=18052, PETRI_PLACES=311, PETRI_TRANSITIONS=768} [2023-01-28 09:05:40,308 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-01-28 09:05:40,308 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 768 transitions, 18052 flow [2023-01-28 09:05:40,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:05:40,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:05:40,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:05:40,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 09:05:40,308 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:05:40,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:05:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash -317965381, now seen corresponding path program 2 times [2023-01-28 09:05:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:05:40,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035683898] [2023-01-28 09:05:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:05:40,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:05:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:05:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:05:40,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:05:40,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035683898] [2023-01-28 09:05:40,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035683898] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:05:40,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:05:40,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:05:40,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628704503] [2023-01-28 09:05:40,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:05:40,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:05:40,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:05:40,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:05:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:05:40,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1064 [2023-01-28 09:05:40,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 768 transitions, 18052 flow. Second operand has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 09:05:40,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:05:40,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1064 [2023-01-28 09:05:40,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:06:02,969 INFO L130 PetriNetUnfolder]: 39389/73419 cut-off events. [2023-01-28 09:06:02,970 INFO L131 PetriNetUnfolder]: For 1377659/1377659 co-relation queries the response was YES. [2023-01-28 09:06:04,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480271 conditions, 73419 events. 39389/73419 cut-off events. For 1377659/1377659 co-relation queries the response was YES. Maximal size of possible extension queue 4819. Compared 786743 event pairs, 10546 based on Foata normal form. 789/74207 useless extension candidates. Maximal degree in co-relation 480139. Up to 32138 conditions per place. [2023-01-28 09:06:05,108 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 1096 selfloop transitions, 206 changer transitions 0/1302 dead transitions. [2023-01-28 09:06:05,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1302 transitions, 32290 flow [2023-01-28 09:06:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:06:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:06:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1762 transitions. [2023-01-28 09:06:05,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41400375939849626 [2023-01-28 09:06:05,110 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1762 transitions. [2023-01-28 09:06:05,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1762 transitions. [2023-01-28 09:06:05,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:06:05,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1762 transitions. [2023-01-28 09:06:05,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 440.5) internal successors, (1762), 4 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states 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 09:06:05,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:06:05,113 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:06:05,113 INFO L175 Difference]: Start difference. First operand has 311 places, 768 transitions, 18052 flow. Second operand 4 states and 1762 transitions. [2023-01-28 09:06:05,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1302 transitions, 32290 flow [2023-01-28 09:06:44,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1302 transitions, 31026 flow, removed 178 selfloop flow, removed 5 redundant places. [2023-01-28 09:06:44,259 INFO L231 Difference]: Finished difference. Result has 311 places, 841 transitions, 20192 flow [2023-01-28 09:06:44,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=17068, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=20192, PETRI_PLACES=311, PETRI_TRANSITIONS=841} [2023-01-28 09:06:44,260 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-01-28 09:06:44,260 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 841 transitions, 20192 flow [2023-01-28 09:06:44,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 09:06:44,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:06:44,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:06:44,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-28 09:06:44,261 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:06:44,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:06:44,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1330045670, now seen corresponding path program 17 times [2023-01-28 09:06:44,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:06:44,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712473965] [2023-01-28 09:06:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:06:44,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:06:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:06:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:06:44,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:06:44,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712473965] [2023-01-28 09:06:44,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712473965] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:06:44,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:06:44,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:06:44,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241007962] [2023-01-28 09:06:44,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:06:44,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:06:44,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:06:44,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:06:44,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:06:44,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 09:06:44,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 841 transitions, 20192 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:06:44,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:06:44,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 09:06:44,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:07:11,040 INFO L130 PetriNetUnfolder]: 41546/77438 cut-off events. [2023-01-28 09:07:11,041 INFO L131 PetriNetUnfolder]: For 1418452/1418452 co-relation queries the response was YES. [2023-01-28 09:07:13,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517543 conditions, 77438 events. 41546/77438 cut-off events. For 1418452/1418452 co-relation queries the response was YES. Maximal size of possible extension queue 5089. Compared 830930 event pairs, 19593 based on Foata normal form. 2/77439 useless extension candidates. Maximal degree in co-relation 517410. Up to 35892 conditions per place. [2023-01-28 09:07:13,486 INFO L137 encePairwiseOnDemand]: 1050/1064 looper letters, 1153 selfloop transitions, 280 changer transitions 16/1449 dead transitions. [2023-01-28 09:07:13,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 1449 transitions, 32823 flow [2023-01-28 09:07:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 09:07:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 09:07:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6669 transitions. [2023-01-28 09:07:13,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36869747899159666 [2023-01-28 09:07:13,509 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6669 transitions. [2023-01-28 09:07:13,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6669 transitions. [2023-01-28 09:07:13,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:07:13,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6669 transitions. [2023-01-28 09:07:13,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 392.29411764705884) internal successors, (6669), 17 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states 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 09:07:13,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states 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 09:07:13,525 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states 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 09:07:13,525 INFO L175 Difference]: Start difference. First operand has 311 places, 841 transitions, 20192 flow. Second operand 17 states and 6669 transitions. [2023-01-28 09:07:13,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 1449 transitions, 32823 flow [2023-01-28 09:08:05,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1449 transitions, 32807 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-01-28 09:08:05,049 INFO L231 Difference]: Finished difference. Result has 341 places, 908 transitions, 22973 flow [2023-01-28 09:08:05,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=20190, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=22973, PETRI_PLACES=341, PETRI_TRANSITIONS=908} [2023-01-28 09:08:05,050 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2023-01-28 09:08:05,050 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 908 transitions, 22973 flow [2023-01-28 09:08:05,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states 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 09:08:05,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:08:05,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:08:05,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-28 09:08:05,051 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:08:05,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:08:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash -857679955, now seen corresponding path program 3 times [2023-01-28 09:08:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:08:05,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604660479] [2023-01-28 09:08:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:08:05,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:08:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:08:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:08:05,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:08:05,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604660479] [2023-01-28 09:08:05,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604660479] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:08:05,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:08:05,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:08:05,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210944681] [2023-01-28 09:08:05,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:08:05,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:08:05,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:08:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:08:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:08:05,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1064 [2023-01-28 09:08:05,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 908 transitions, 22973 flow. Second operand has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 09:08:05,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:08:05,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1064 [2023-01-28 09:08:05,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:08:31,778 INFO L130 PetriNetUnfolder]: 42071/76230 cut-off events. [2023-01-28 09:08:31,778 INFO L131 PetriNetUnfolder]: For 1524772/1524772 co-relation queries the response was YES. [2023-01-28 09:08:34,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516578 conditions, 76230 events. 42071/76230 cut-off events. For 1524772/1524772 co-relation queries the response was YES. Maximal size of possible extension queue 4880. Compared 792088 event pairs, 10702 based on Foata normal form. 781/77010 useless extension candidates. Maximal degree in co-relation 516430. Up to 37857 conditions per place. [2023-01-28 09:08:34,832 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 966 selfloop transitions, 269 changer transitions 0/1235 dead transitions. [2023-01-28 09:08:34,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1235 transitions, 31633 flow [2023-01-28 09:08:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:08:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:08:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1758 transitions. [2023-01-28 09:08:34,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130639097744361 [2023-01-28 09:08:34,834 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1758 transitions. [2023-01-28 09:08:34,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1758 transitions. [2023-01-28 09:08:34,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:08:34,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1758 transitions. [2023-01-28 09:08:34,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 439.5) internal successors, (1758), 4 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:08:34,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:08:34,838 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 09:08:34,838 INFO L175 Difference]: Start difference. First operand has 341 places, 908 transitions, 22973 flow. Second operand 4 states and 1758 transitions. [2023-01-28 09:08:34,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 1235 transitions, 31633 flow [2023-01-28 09:09:16,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1235 transitions, 30772 flow, removed 240 selfloop flow, removed 5 redundant places. [2023-01-28 09:09:16,737 INFO L231 Difference]: Finished difference. Result has 339 places, 942 transitions, 23740 flow [2023-01-28 09:09:16,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=19921, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=23740, PETRI_PLACES=339, PETRI_TRANSITIONS=942} [2023-01-28 09:09:16,742 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2023-01-28 09:09:16,742 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 942 transitions, 23740 flow [2023-01-28 09:09:16,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 09:09:16,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:09:16,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:09:16,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-28 09:09:16,743 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:09:16,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:09:16,743 INFO L85 PathProgramCache]: Analyzing trace with hash -777514146, now seen corresponding path program 18 times [2023-01-28 09:09:16,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:09:16,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793364137] [2023-01-28 09:09:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:09:16,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:09:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:09:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 09:09:17,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:09:17,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793364137] [2023-01-28 09:09:17,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793364137] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:09:17,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:09:17,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:09:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083867479] [2023-01-28 09:09:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:09:17,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:09:17,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:09:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:09:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:09:17,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 09:09:17,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 942 transitions, 23740 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 09:09:17,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:09:17,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 09:09:17,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:09:44,416 INFO L130 PetriNetUnfolder]: 42071/76229 cut-off events. [2023-01-28 09:09:44,416 INFO L131 PetriNetUnfolder]: For 1497092/1497092 co-relation queries the response was YES. [2023-01-28 09:09:46,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526524 conditions, 76229 events. 42071/76229 cut-off events. For 1497092/1497092 co-relation queries the response was YES. Maximal size of possible extension queue 4799. Compared 787673 event pairs, 21493 based on Foata normal form. 1/76229 useless extension candidates. Maximal degree in co-relation 526377. Up to 52952 conditions per place. [2023-01-28 09:09:46,918 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 726 selfloop transitions, 330 changer transitions 7/1063 dead transitions. [2023-01-28 09:09:46,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1063 transitions, 27274 flow [2023-01-28 09:09:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:09:46,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:09:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3624 transitions. [2023-01-28 09:09:47,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37844611528822053 [2023-01-28 09:09:47,034 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3624 transitions. [2023-01-28 09:09:47,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3624 transitions. [2023-01-28 09:09:47,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:09:47,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3624 transitions. [2023-01-28 09:09:47,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.6666666666667) internal successors, (3624), 9 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states 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 09:09:47,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states 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 09:09:47,040 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states 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 09:09:47,040 INFO L175 Difference]: Start difference. First operand has 339 places, 942 transitions, 23740 flow. Second operand 9 states and 3624 transitions. [2023-01-28 09:09:47,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1063 transitions, 27274 flow [2023-01-28 09:10:34,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1063 transitions, 27242 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-01-28 09:10:34,281 INFO L231 Difference]: Finished difference. Result has 348 places, 941 transitions, 24346 flow [2023-01-28 09:10:34,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=23710, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24346, PETRI_PLACES=348, PETRI_TRANSITIONS=941} [2023-01-28 09:10:34,284 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 306 predicate places. [2023-01-28 09:10:34,284 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 941 transitions, 24346 flow [2023-01-28 09:10:34,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 09:10:34,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:34,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:34,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-28 09:10:34,284 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:10:34,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash 117954734, now seen corresponding path program 19 times [2023-01-28 09:10:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:34,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608339920] [2023-01-28 09:10:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:34,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 09:10:35,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:35,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608339920] [2023-01-28 09:10:35,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608339920] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:10:35,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178800028] [2023-01-28 09:10:35,368 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 09:10:35,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:10:35,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:10:35,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:10:35,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:10:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:35,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 09:10:35,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-01-28 09:14:29,476 WARN L238 SmtUtils]: Removed 500 from assertion stack [2023-01-28 09:14:29,482 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:14:29,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 09:14:29,502 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:14:29,502 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:14:29,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:14:29,683 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7342 for 224639ms.. [2023-01-28 09:14:29,684 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:14:29,684 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:14:29,684 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:14:29,684 INFO L445 BasicCegarLoop]: Path program histogram: [19, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:14:29,686 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:14:29,686 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:14:29,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:14:29 BasicIcfg [2023-01-28 09:14:29,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:14:29,688 INFO L158 Benchmark]: Toolchain (without parser) took 803172.20ms. Allocated memory was 497.0MB in the beginning and 15.1GB in the end (delta: 14.6GB). Free memory was 447.6MB in the beginning and 10.2GB in the end (delta: -9.7GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2023-01-28 09:14:29,688 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 352.3MB. Free memory is still 301.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:14:29,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.95ms. Allocated memory is still 497.0MB. Free memory was 447.2MB in the beginning and 434.3MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 09:14:29,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.50ms. Allocated memory is still 497.0MB. Free memory was 434.3MB in the beginning and 431.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:14:29,689 INFO L158 Benchmark]: Boogie Preprocessor took 39.06ms. Allocated memory is still 497.0MB. Free memory was 431.1MB in the beginning and 428.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 09:14:29,689 INFO L158 Benchmark]: RCFGBuilder took 854.14ms. Allocated memory is still 497.0MB. Free memory was 428.3MB in the beginning and 394.4MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-01-28 09:14:29,689 INFO L158 Benchmark]: TraceAbstraction took 802046.39ms. Allocated memory was 497.0MB in the beginning and 15.1GB in the end (delta: 14.6GB). Free memory was 393.7MB in the beginning and 10.2GB in the end (delta: -9.8GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2023-01-28 09:14:29,690 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 352.3MB. Free memory is still 301.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 195.95ms. Allocated memory is still 497.0MB. Free memory was 447.2MB in the beginning and 434.3MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.50ms. Allocated memory is still 497.0MB. Free memory was 434.3MB in the beginning and 431.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.06ms. Allocated memory is still 497.0MB. Free memory was 431.1MB in the beginning and 428.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 854.14ms. Allocated memory is still 497.0MB. Free memory was 428.3MB in the beginning and 394.4MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * TraceAbstraction took 802046.39ms. Allocated memory was 497.0MB in the beginning and 15.1GB in the end (delta: 14.6GB). Free memory was 393.7MB in the beginning and 10.2GB in the end (delta: -9.8GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.0s, 457 PlacesBefore, 42 PlacesAfterwards, 488 TransitionsBefore, 42 TransitionsAfterwards, 17280 CoEnabledTransitionPairs, 11 FixpointIterations, 281 TrivialSequentialCompositions, 140 ConcurrentSequentialCompositions, 76 TrivialYvCompositions, 35 ConcurrentYvCompositions, 31 ChoiceCompositions, 563 TotalNumberOfCompositions, 21051 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17976, independent: 17711, independent conditional: 0, independent unconditional: 17711, dependent: 265, dependent conditional: 0, dependent unconditional: 265, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10069, independent: 10017, independent conditional: 0, independent unconditional: 10017, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17976, independent: 7694, independent conditional: 0, independent unconditional: 7694, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 10069, unknown conditional: 0, unknown unconditional: 10069] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 137, Positive conditional cache size: 0, Positive unconditional cache size: 137, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7342 for 224639ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7342 for 224639ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7342 for 224639ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7342 for 224639ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 599 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 801.9s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 530.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3231 SdHoareTripleChecker+Valid, 10.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3231 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16506 IncrementalHoareTripleChecker+Invalid, 16584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 0 mSDtfsCounter, 16506 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 462 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24346occurred in iteration=29, InterpolantAutomatonStates: 274, 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: 0.1s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 1010 NumberOfCodeBlocks, 1010 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 980 ConstructedInterpolants, 0 QuantifiedInterpolants, 18284 SizeOfPredicates, 2 NumberOfNonLiveVariables, 430 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 30 InterpolantComputations, 29 PerfectInterpolantSequences, 144/145 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown