/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 15:38:23,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 15:38:23,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 15:38:23,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 15:38:23,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 15:38:23,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 15:38:23,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 15:38:23,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 15:38:23,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 15:38:23,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 15:38:23,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 15:38:23,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 15:38:23,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 15:38:23,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 15:38:23,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 15:38:23,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 15:38:23,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 15:38:23,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 15:38:23,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 15:38:23,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 15:38:23,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 15:38:23,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 15:38:23,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 15:38:23,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 15:38:23,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 15:38:23,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 15:38:23,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 15:38:23,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 15:38:23,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 15:38:23,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 15:38:23,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 15:38:23,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 15:38:23,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 15:38:23,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 15:38:23,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 15:38:23,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 15:38:24,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 15:38:24,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 15:38:24,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 15:38:24,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 15:38:24,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 15:38:24,019 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-RepeatedSemanticLbe.epf [2021-03-25 15:38:24,050 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 15:38:24,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 15:38:24,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 15:38:24,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 15:38:24,052 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 15:38:24,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 15:38:24,053 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 15:38:24,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 15:38:24,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 15:38:24,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 15:38:24,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 15:38:24,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 15:38:24,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 15:38:24,054 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 15:38:24,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 15:38:24,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 15:38:24,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 15:38:24,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 15:38:24,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 15:38:24,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 15:38:24,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 15:38:24,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 15:38:24,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 15:38:24,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 15:38:24,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 15:38:24,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 15:38:24,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 15:38:24,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 15:38:24,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 15:38:24,056 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 15:38:24,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 15:38:24,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 15:38:24,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 15:38:24,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 15:38:24,432 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 15:38:24,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2021-03-25 15:38:24,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194e3606f/8078146a52d043a0a76e991cc3a50557/FLAGb534a4348 [2021-03-25 15:38:25,027 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 15:38:25,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2021-03-25 15:38:25,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194e3606f/8078146a52d043a0a76e991cc3a50557/FLAGb534a4348 [2021-03-25 15:38:25,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194e3606f/8078146a52d043a0a76e991cc3a50557 [2021-03-25 15:38:25,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 15:38:25,484 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 15:38:25,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 15:38:25,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 15:38:25,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 15:38:25,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:38:25" (1/1) ... [2021-03-25 15:38:25,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa30a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:25, skipping insertion in model container [2021-03-25 15:38:25,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:38:25" (1/1) ... [2021-03-25 15:38:25,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 15:38:25,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 15:38:25,662 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-25 15:38:25,853 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i[30458,30471] [2021-03-25 15:38:25,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 15:38:25,877 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 15:38:25,890 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-25 15:38:25,918 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i[30458,30471] [2021-03-25 15:38:25,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 15:38:26,003 INFO L208 MainTranslator]: Completed translation [2021-03-25 15:38:26,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26 WrapperNode [2021-03-25 15:38:26,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 15:38:26,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 15:38:26,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 15:38:26,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 15:38:26,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (1/1) ... [2021-03-25 15:38:26,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (1/1) ... [2021-03-25 15:38:26,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 15:38:26,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 15:38:26,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 15:38:26,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 15:38:26,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (1/1) ... [2021-03-25 15:38:26,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (1/1) ... [2021-03-25 15:38:26,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (1/1) ... [2021-03-25 15:38:26,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (1/1) ... [2021-03-25 15:38:26,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (1/1) ... [2021-03-25 15:38:26,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (1/1) ... [2021-03-25 15:38:26,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (1/1) ... [2021-03-25 15:38:26,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 15:38:26,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 15:38:26,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 15:38:26,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 15:38:26,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 15:38:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 15:38:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 15:38:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-25 15:38:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 15:38:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 15:38:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 15:38:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-03-25 15:38:26,201 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-03-25 15:38:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 15:38:26,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 15:38:26,202 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 15:38:26,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 15:38:26,587 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-25 15:38:26,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:38:26 BoogieIcfgContainer [2021-03-25 15:38:26,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 15:38:26,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 15:38:26,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 15:38:26,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 15:38:26,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 03:38:25" (1/3) ... [2021-03-25 15:38:26,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:38:26, skipping insertion in model container [2021-03-25 15:38:26,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:38:26" (2/3) ... [2021-03-25 15:38:26,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:38:26, skipping insertion in model container [2021-03-25 15:38:26,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:38:26" (3/3) ... [2021-03-25 15:38:26,595 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2021-03-25 15:38:26,600 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 15:38:26,605 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 15:38:26,606 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 15:38:26,642 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,642 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,642 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,642 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,643 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,643 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,644 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,644 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,644 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,645 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,646 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,647 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,647 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,647 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,648 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,648 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,648 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,648 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,650 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,650 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,650 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,650 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,650 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,651 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:38:26,656 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-25 15:38:26,672 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 15:38:26,690 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 15:38:26,690 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 15:38:26,690 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 15:38:26,691 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 15:38:26,691 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 15:38:26,691 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 15:38:26,691 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 15:38:26,691 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 15:38:26,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 69 transitions, 146 flow [2021-03-25 15:38:26,730 INFO L129 PetriNetUnfolder]: 5/68 cut-off events. [2021-03-25 15:38:26,730 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:26,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 5/68 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2021-03-25 15:38:26,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 69 transitions, 146 flow [2021-03-25 15:38:26,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 62 transitions, 127 flow [2021-03-25 15:38:26,738 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:26,749 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 62 transitions, 127 flow [2021-03-25 15:38:26,752 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 62 transitions, 127 flow [2021-03-25 15:38:26,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 127 flow [2021-03-25 15:38:26,767 INFO L129 PetriNetUnfolder]: 5/62 cut-off events. [2021-03-25 15:38:26,767 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:38:26,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 5/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2021-03-25 15:38:26,770 INFO L142 LiptonReduction]: Number of co-enabled transitions 352 [2021-03-25 15:38:28,535 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-03-25 15:38:28,757 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-03-25 15:38:29,374 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 126 [2021-03-25 15:38:29,531 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-03-25 15:38:29,877 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 126 [2021-03-25 15:38:30,009 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-03-25 15:38:30,015 INFO L154 LiptonReduction]: Checked pairs total: 193 [2021-03-25 15:38:30,016 INFO L156 LiptonReduction]: Total number of compositions: 48 [2021-03-25 15:38:30,018 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3281 [2021-03-25 15:38:30,025 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-03-25 15:38:30,026 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:38:30,026 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:30,027 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:30,027 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:30,031 INFO L82 PathProgramCache]: Analyzing trace with hash 21335183, now seen corresponding path program 1 times [2021-03-25 15:38:30,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:30,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301061573] [2021-03-25 15:38:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:30,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:30,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:30,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:30,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:30,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:30,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:30,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301061573] [2021-03-25 15:38:30,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:38:30,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 15:38:30,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552910106] [2021-03-25 15:38:30,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:38:30,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:30,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:38:30,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:38:30,226 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 117 [2021-03-25 15:38:30,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:30,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:30,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 117 [2021-03-25 15:38:30,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:30,252 INFO L129 PetriNetUnfolder]: 3/21 cut-off events. [2021-03-25 15:38:30,253 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:38:30,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 21 events. 3/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 27 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 22. Up to 5 conditions per place. [2021-03-25 15:38:30,255 INFO L132 encePairwiseOnDemand]: 114/117 looper letters, 3 selfloop transitions, 2 changer transitions 1/19 dead transitions. [2021-03-25 15:38:30,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 51 flow [2021-03-25 15:38:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:38:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:38:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2021-03-25 15:38:30,272 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8717948717948718 [2021-03-25 15:38:30,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2021-03-25 15:38:30,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2021-03-25 15:38:30,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:30,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2021-03-25 15:38:30,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:30,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:30,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:30,304 INFO L185 Difference]: Start difference. First operand has 20 places, 18 transitions, 39 flow. Second operand 3 states and 306 transitions. [2021-03-25 15:38:30,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 51 flow [2021-03-25 15:38:30,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 50 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 15:38:30,308 INFO L241 Difference]: Finished difference. Result has 22 places, 17 transitions, 44 flow [2021-03-25 15:38:30,310 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2021-03-25 15:38:30,310 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2021-03-25 15:38:30,311 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:30,311 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 17 transitions, 44 flow [2021-03-25 15:38:30,311 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 17 transitions, 44 flow [2021-03-25 15:38:30,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 17 transitions, 44 flow [2021-03-25 15:38:30,317 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-25 15:38:30,317 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:30,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 16. Up to 3 conditions per place. [2021-03-25 15:38:30,319 INFO L142 LiptonReduction]: Number of co-enabled transitions 60 [2021-03-25 15:38:31,028 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2021-03-25 15:38:31,229 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-03-25 15:38:31,620 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2021-03-25 15:38:31,842 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-03-25 15:38:31,844 INFO L154 LiptonReduction]: Checked pairs total: 28 [2021-03-25 15:38:31,844 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 15:38:31,844 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1533 [2021-03-25 15:38:31,845 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 30 flow [2021-03-25 15:38:31,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:31,845 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:31,846 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:31,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 15:38:31,846 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:31,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:31,846 INFO L82 PathProgramCache]: Analyzing trace with hash -103533736, now seen corresponding path program 1 times [2021-03-25 15:38:31,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:31,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80874738] [2021-03-25 15:38:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:31,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:31,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:31,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:31,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:31,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:31,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:31,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80874738] [2021-03-25 15:38:31,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:38:31,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 15:38:31,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963881009] [2021-03-25 15:38:31,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:38:31,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:31,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:38:31,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:38:31,903 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 124 [2021-03-25 15:38:31,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:31,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:31,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 124 [2021-03-25 15:38:31,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:31,918 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:31,918 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:38:31,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 16. Up to 5 conditions per place. [2021-03-25 15:38:31,919 INFO L132 encePairwiseOnDemand]: 121/124 looper letters, 3 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2021-03-25 15:38:31,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 42 flow [2021-03-25 15:38:31,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:38:31,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:38:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-03-25 15:38:31,921 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8145161290322581 [2021-03-25 15:38:31,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-03-25 15:38:31,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-03-25 15:38:31,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:31,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-03-25 15:38:31,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:31,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:31,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:31,926 INFO L185 Difference]: Start difference. First operand has 14 places, 10 transitions, 30 flow. Second operand 3 states and 303 transitions. [2021-03-25 15:38:31,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 42 flow [2021-03-25 15:38:31,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 38 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:31,927 INFO L241 Difference]: Finished difference. Result has 15 places, 11 transitions, 38 flow [2021-03-25 15:38:31,927 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=15, PETRI_TRANSITIONS=11} [2021-03-25 15:38:31,927 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -5 predicate places. [2021-03-25 15:38:31,928 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:31,928 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 11 transitions, 38 flow [2021-03-25 15:38:31,929 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 11 transitions, 38 flow [2021-03-25 15:38:31,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 15 places, 11 transitions, 38 flow [2021-03-25 15:38:31,932 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:31,932 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:31,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 16. Up to 4 conditions per place. [2021-03-25 15:38:31,933 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:31,941 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:31,941 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:31,941 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-25 15:38:31,943 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 36 flow [2021-03-25 15:38:31,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:31,943 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:31,943 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:31,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 15:38:31,944 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:31,944 INFO L82 PathProgramCache]: Analyzing trace with hash 560849992, now seen corresponding path program 1 times [2021-03-25 15:38:31,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:31,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192108069] [2021-03-25 15:38:31,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:32,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:32,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192108069] [2021-03-25 15:38:32,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928073443] [2021-03-25 15:38:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:32,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-03-25 15:38:32,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:32,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:32,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:32,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:32,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:32,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:32,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:32,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,177 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:32,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:32,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:32,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-03-25 15:38:32,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982172128] [2021-03-25 15:38:32,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:32,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:32,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:32,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:32,187 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 125 [2021-03-25 15:38:32,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 36 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:32,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:32,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 125 [2021-03-25 15:38:32,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:32,205 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:32,205 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 15:38:32,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 11 events. 2/11 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 22. Up to 5 conditions per place. [2021-03-25 15:38:32,205 INFO L132 encePairwiseOnDemand]: 122/125 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:32,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 52 flow [2021-03-25 15:38:32,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:32,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:32,207 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.806 [2021-03-25 15:38:32,207 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:32,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:32,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:32,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:32,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:32,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:32,210 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:32,210 INFO L185 Difference]: Start difference. First operand has 14 places, 10 transitions, 36 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:32,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 52 flow [2021-03-25 15:38:32,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 15:38:32,211 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:32,211 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:32,211 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:32,211 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:32,211 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:32,211 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:32,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:32,214 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:32,214 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:32,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:32,214 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:32,244 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:32,244 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:32,244 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-25 15:38:32,245 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:32,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:32,245 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:32,246 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:32,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-03-25 15:38:32,468 INFO L428 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:32,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:32,468 INFO L82 PathProgramCache]: Analyzing trace with hash 2133807638, now seen corresponding path program 1 times [2021-03-25 15:38:32,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:32,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900006413] [2021-03-25 15:38:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:32,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:32,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900006413] [2021-03-25 15:38:32,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719587582] [2021-03-25 15:38:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:32,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:32,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:32,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:32,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:32,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:32,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:32,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:32,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:32,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:32,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:32,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:32,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:32,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:32,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:32,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:32,695 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:32,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:32,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:32,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:32,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-03-25 15:38:32,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100233278] [2021-03-25 15:38:32,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 15:38:32,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:32,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 15:38:32,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-25 15:38:32,700 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 126 [2021-03-25 15:38:32,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:32,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:32,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 126 [2021-03-25 15:38:32,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:32,721 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:32,721 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:32,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:32,722 INFO L132 encePairwiseOnDemand]: 123/126 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:32,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:32,724 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7996031746031746 [2021-03-25 15:38:32,724 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:32,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:32,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:32,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:32,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:32,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:32,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:32,727 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:32,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:32,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:32,729 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:32,729 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:32,729 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:32,729 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:32,729 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:32,729 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:32,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:32,732 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:32,732 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:32,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:32,732 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:32,765 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:32,765 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:32,765 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 15:38:32,768 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:32,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:32,769 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:32,769 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:32,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:32,980 INFO L428 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:32,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2134731159, now seen corresponding path program 1 times [2021-03-25 15:38:32,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:32,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518021200] [2021-03-25 15:38:32,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:33,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 15:38:33,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:33,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518021200] [2021-03-25 15:38:33,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584324407] [2021-03-25 15:38:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:33,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:33,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:33,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:33,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:33,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:33,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:33,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:33,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:33,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:33,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:33,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:33,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:33,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:33,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:33,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,181 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:33,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:33,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:33,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-03-25 15:38:33,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445457062] [2021-03-25 15:38:33,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 15:38:33,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:33,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 15:38:33,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-25 15:38:33,195 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 127 [2021-03-25 15:38:33,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:33,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:33,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 127 [2021-03-25 15:38:33,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:33,221 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:33,221 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:33,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:33,224 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:33,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:33,227 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7933070866141733 [2021-03-25 15:38:33,227 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:33,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:33,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:33,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:33,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:33,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:33,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:33,231 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:33,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:33,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:33,234 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:33,234 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:33,234 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:33,235 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:33,235 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:33,235 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:33,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:33,238 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:33,238 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:33,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:33,239 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:33,271 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:33,272 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:33,272 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-25 15:38:33,273 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:33,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:33,274 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:33,274 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:33,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:33,488 INFO L428 AbstractCegarLoop]: === Iteration 6 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:33,488 INFO L82 PathProgramCache]: Analyzing trace with hash 378966104, now seen corresponding path program 1 times [2021-03-25 15:38:33,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:33,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180006381] [2021-03-25 15:38:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:33,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:33,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180006381] [2021-03-25 15:38:33,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649937967] [2021-03-25 15:38:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:33,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:33,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:33,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:33,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:33,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:33,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:33,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:33,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:33,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:33,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:33,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:33,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:33,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:33,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:33,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:33,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:33,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:33,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:33,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:33,651 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:33,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:33,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:33,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:33,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:33,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224339092] [2021-03-25 15:38:33,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:33,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:33,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:33,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:33,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 128 [2021-03-25 15:38:33,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:33,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:33,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 128 [2021-03-25 15:38:33,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:33,684 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:33,684 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:33,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:33,685 INFO L132 encePairwiseOnDemand]: 125/128 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:33,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:33,687 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.787109375 [2021-03-25 15:38:33,687 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:33,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:33,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:33,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:33,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:33,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:33,689 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:33,690 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:33,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:33,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:33,691 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:33,691 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:33,691 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:33,692 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:33,692 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:33,692 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:33,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:33,697 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:33,697 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:33,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:33,697 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:33,734 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:33,734 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:33,734 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-03-25 15:38:33,735 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:33,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:33,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:33,736 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:33,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:33,960 INFO L428 AbstractCegarLoop]: === Iteration 7 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:33,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1266469785, now seen corresponding path program 1 times [2021-03-25 15:38:33,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:33,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800138927] [2021-03-25 15:38:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:34,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:34,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800138927] [2021-03-25 15:38:34,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39800370] [2021-03-25 15:38:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:34,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:34,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:34,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,117 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:34,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:34,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:34,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:34,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066073049] [2021-03-25 15:38:34,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:34,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:34,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:34,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:34,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 129 [2021-03-25 15:38:34,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:34,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 129 [2021-03-25 15:38:34,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:34,142 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:34,142 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:34,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:34,143 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:34,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:34,145 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7810077519379846 [2021-03-25 15:38:34,145 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:34,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:34,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:34,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:34,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,147 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:34,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:34,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:34,148 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:34,148 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:34,149 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:34,149 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:34,149 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:34,149 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:34,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:34,151 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:34,152 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:34,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:34,152 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:34,202 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:34,203 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:34,203 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 54 [2021-03-25 15:38:34,203 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:34,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,204 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:34,204 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:34,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-03-25 15:38:34,408 INFO L428 AbstractCegarLoop]: === Iteration 8 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:34,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:34,408 INFO L82 PathProgramCache]: Analyzing trace with hash 2137501722, now seen corresponding path program 1 times [2021-03-25 15:38:34,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:34,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804478674] [2021-03-25 15:38:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:34,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:34,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804478674] [2021-03-25 15:38:34,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945342164] [2021-03-25 15:38:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:34,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:34,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:34,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,557 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:34,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:34,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:34,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:34,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849645989] [2021-03-25 15:38:34,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:34,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:34,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:34,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:34,562 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 130 [2021-03-25 15:38:34,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:34,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 130 [2021-03-25 15:38:34,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:34,580 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:34,580 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:34,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:34,581 INFO L132 encePairwiseOnDemand]: 127/130 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:34,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:34,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:34,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.775 [2021-03-25 15:38:34,583 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:34,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:34,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:34,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:34,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,586 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,586 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:34,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:34,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:34,587 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:34,587 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:34,587 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:34,587 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:34,587 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:34,587 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:34,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:34,590 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:34,591 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:34,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:34,591 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:34,628 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:34,628 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:34,628 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-03-25 15:38:34,628 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:34,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:34,629 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:34,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:34,844 INFO L428 AbstractCegarLoop]: === Iteration 9 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:34,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:34,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2138425243, now seen corresponding path program 1 times [2021-03-25 15:38:34,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:34,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232706475] [2021-03-25 15:38:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:34,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:34,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232706475] [2021-03-25 15:38:34,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578637775] [2021-03-25 15:38:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:34,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:34,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:34,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:34,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:34,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:34,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:34,989 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:34,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:34,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:34,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:34,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:34,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004126964] [2021-03-25 15:38:34,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:34,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:34,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:34,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:34,997 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 131 [2021-03-25 15:38:34,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:34,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:34,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 131 [2021-03-25 15:38:34,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:35,018 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:35,018 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:35,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:35,019 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:35,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:35,020 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7690839694656488 [2021-03-25 15:38:35,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:35,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:35,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:35,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:35,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,023 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:35,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:35,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:35,024 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,024 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:35,024 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:35,024 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:35,024 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,025 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,027 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:35,027 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:35,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:35,028 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:35,059 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:35,059 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:35,059 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-03-25 15:38:35,060 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:35,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,060 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:35,060 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:35,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:35,284 INFO L428 AbstractCegarLoop]: === Iteration 10 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash -365986468, now seen corresponding path program 1 times [2021-03-25 15:38:35,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:35,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941653517] [2021-03-25 15:38:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:35,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 15:38:35,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:35,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941653517] [2021-03-25 15:38:35,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789964311] [2021-03-25 15:38:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:35,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:35,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:35,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:35,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:35,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:35,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:35,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:35,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:35,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:35,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:35,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:35,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:35,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:35,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:35,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,416 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:35,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:35,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:35,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-03-25 15:38:35,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311205682] [2021-03-25 15:38:35,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 15:38:35,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:35,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 15:38:35,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-25 15:38:35,425 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 132 [2021-03-25 15:38:35,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:35,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 132 [2021-03-25 15:38:35,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:35,444 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:35,445 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:35,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:35,445 INFO L132 encePairwiseOnDemand]: 129/132 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:35,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:35,447 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7632575757575758 [2021-03-25 15:38:35,447 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:35,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:35,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:35,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:35,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,449 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,449 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:35,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:35,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:35,451 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,451 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:35,452 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:35,452 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:35,452 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,453 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,458 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:35,458 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:35,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:35,458 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:35,489 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:35,489 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:35,489 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-25 15:38:35,490 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:35,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,490 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:35,490 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:35,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-03-25 15:38:35,692 INFO L428 AbstractCegarLoop]: === Iteration 11 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:35,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:35,692 INFO L82 PathProgramCache]: Analyzing trace with hash 521517213, now seen corresponding path program 1 times [2021-03-25 15:38:35,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:35,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13959093] [2021-03-25 15:38:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:35,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:35,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13959093] [2021-03-25 15:38:35,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223398384] [2021-03-25 15:38:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:35,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:35,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:35,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:35,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:35,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:35,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:35,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:35,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:35,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:35,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:35,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:35,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:35,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:35,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:35,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:35,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:35,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:35,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:35,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:35,833 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:35,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:35,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:35,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:35,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:35,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738339466] [2021-03-25 15:38:35,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:35,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:35,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:35,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:35,841 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 133 [2021-03-25 15:38:35,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:35,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 133 [2021-03-25 15:38:35,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:35,857 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:35,858 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:35,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:35,858 INFO L132 encePairwiseOnDemand]: 130/133 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:35,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:35,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:35,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7575187969924813 [2021-03-25 15:38:35,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:35,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:35,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:35,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:35,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,862 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:35,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:35,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:35,863 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,863 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:35,864 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:35,864 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:35,864 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,864 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:35,867 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:35,867 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:35,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:35,867 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:35,902 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:35,902 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:35,903 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-03-25 15:38:35,904 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:35,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:35,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:35,905 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:36,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:36,121 INFO L428 AbstractCegarLoop]: === Iteration 12 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:36,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:36,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1409020894, now seen corresponding path program 1 times [2021-03-25 15:38:36,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:36,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624329910] [2021-03-25 15:38:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:36,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:36,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624329910] [2021-03-25 15:38:36,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802128592] [2021-03-25 15:38:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:36,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:36,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:36,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:36,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:36,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:36,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:36,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:36,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:36,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:36,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:36,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:36,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:36,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,255 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:36,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:36,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:36,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:36,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402144527] [2021-03-25 15:38:36,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:36,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:36,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:36,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:36,265 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2021-03-25 15:38:36,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:36,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:36,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2021-03-25 15:38:36,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:36,280 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:36,280 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:36,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:36,280 INFO L132 encePairwiseOnDemand]: 131/134 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:36,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:36,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:36,282 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7518656716417911 [2021-03-25 15:38:36,282 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:36,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:36,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:36,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:36,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:36,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:36,285 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:36,285 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:36,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:36,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:36,287 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:36,287 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:36,287 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:36,287 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:36,287 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:36,287 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:36,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:36,292 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:36,292 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:36,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:36,293 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:36,330 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:36,330 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:36,330 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-25 15:38:36,330 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:36,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:36,331 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:36,331 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:36,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:36,546 INFO L428 AbstractCegarLoop]: === Iteration 13 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:36,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:36,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2142119327, now seen corresponding path program 1 times [2021-03-25 15:38:36,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:36,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63943078] [2021-03-25 15:38:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:36,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:36,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63943078] [2021-03-25 15:38:36,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528363668] [2021-03-25 15:38:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:36,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:36,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:36,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:36,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:36,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:36,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:36,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:36,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:36,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:36,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:36,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:36,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:36,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:36,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:36,708 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:36,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:36,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:36,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:36,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:36,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962934789] [2021-03-25 15:38:36,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:36,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:36,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:36,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:36,715 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 135 [2021-03-25 15:38:36,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:36,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:36,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 135 [2021-03-25 15:38:36,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:36,731 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:36,731 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:36,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:36,733 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:36,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:36,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:36,734 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7462962962962963 [2021-03-25 15:38:36,734 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:36,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:36,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:36,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:36,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:36,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:36,737 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:36,737 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:36,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:36,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:36,738 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:36,738 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:36,738 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:36,738 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:36,738 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:36,739 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:36,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:36,740 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:36,740 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:36,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:36,741 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:36,773 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:36,773 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:36,773 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-03-25 15:38:36,774 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:36,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:36,774 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:36,774 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:36,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-03-25 15:38:36,996 INFO L428 AbstractCegarLoop]: === Iteration 14 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:36,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:36,996 INFO L82 PathProgramCache]: Analyzing trace with hash 2143042848, now seen corresponding path program 1 times [2021-03-25 15:38:36,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:36,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594694112] [2021-03-25 15:38:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:37,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:37,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594694112] [2021-03-25 15:38:37,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399753498] [2021-03-25 15:38:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:37,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:37,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:37,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,156 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:37,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:37,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:37,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:37,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230123761] [2021-03-25 15:38:37,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:37,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:37,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:37,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:37,162 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2021-03-25 15:38:37,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:37,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2021-03-25 15:38:37,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:37,182 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:37,182 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:37,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:37,182 INFO L132 encePairwiseOnDemand]: 133/136 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:37,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:37,184 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7408088235294118 [2021-03-25 15:38:37,184 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:37,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:37,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:37,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:37,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,187 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:37,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:37,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:37,188 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,188 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:37,189 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:37,189 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:37,189 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,189 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,192 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:37,192 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:37,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:37,194 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:37,231 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:37,231 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:37,231 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-03-25 15:38:37,232 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:37,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,233 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:37,233 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:37,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-03-25 15:38:37,456 INFO L428 AbstractCegarLoop]: === Iteration 15 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:37,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2143966369, now seen corresponding path program 1 times [2021-03-25 15:38:37,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:37,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201467269] [2021-03-25 15:38:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:37,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:37,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201467269] [2021-03-25 15:38:37,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17629588] [2021-03-25 15:38:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:37,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:37,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:37,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,574 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:37,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:37,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:37,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:37,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84704264] [2021-03-25 15:38:37,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:37,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:37,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:37,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:37,584 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 137 [2021-03-25 15:38:37,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:37,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 137 [2021-03-25 15:38:37,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:37,597 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:37,597 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:37,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:37,598 INFO L132 encePairwiseOnDemand]: 134/137 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:37,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:37,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:37,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:37,599 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7354014598540146 [2021-03-25 15:38:37,599 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:37,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:37,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:37,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:37,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,601 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,601 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:37,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:37,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:37,602 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,602 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:37,603 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:37,603 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:37,603 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,603 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,604 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:37,605 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:37,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:37,605 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:37,637 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:37,637 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:37,638 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-03-25 15:38:37,641 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:37,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,642 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:37,642 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:37,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-03-25 15:38:37,852 INFO L428 AbstractCegarLoop]: === Iteration 16 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:37,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:37,852 INFO L82 PathProgramCache]: Analyzing trace with hash 664068322, now seen corresponding path program 1 times [2021-03-25 15:38:37,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:37,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190304792] [2021-03-25 15:38:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:37,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:37,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190304792] [2021-03-25 15:38:37,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861271034] [2021-03-25 15:38:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:37,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:37,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:37,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:37,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:37,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:37,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:37,957 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:37,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:37,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:37,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:37,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:37,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481263420] [2021-03-25 15:38:37,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:37,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:37,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:37,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:37,964 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 138 [2021-03-25 15:38:37,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:37,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 138 [2021-03-25 15:38:37,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:37,979 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:37,980 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:37,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:37,980 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:37,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:37,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:37,982 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.730072463768116 [2021-03-25 15:38:37,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:37,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:37,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:37,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:37,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,984 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:37,984 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:37,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:37,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:37,985 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,985 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:37,985 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:37,985 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:37,986 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,986 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:37,987 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:37,988 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:37,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:37,988 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:38,017 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:38,018 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:38,018 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-25 15:38:38,019 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:38,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,019 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:38,019 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:38,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:38,220 INFO L428 AbstractCegarLoop]: === Iteration 17 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:38,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:38,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1551572003, now seen corresponding path program 1 times [2021-03-25 15:38:38,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:38,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774609105] [2021-03-25 15:38:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:38,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:38,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774609105] [2021-03-25 15:38:38,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281912432] [2021-03-25 15:38:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:38,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:38,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:38,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:38,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:38,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:38,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:38,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:38,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:38,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:38,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:38,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:38,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:38,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:38,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:38,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,334 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:38,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:38,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:38,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:38,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776991302] [2021-03-25 15:38:38,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:38,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:38,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:38,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:38,341 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 139 [2021-03-25 15:38:38,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:38,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 139 [2021-03-25 15:38:38,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:38,354 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:38,354 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:38,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:38,354 INFO L132 encePairwiseOnDemand]: 136/139 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:38,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:38,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:38,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:38,356 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7248201438848921 [2021-03-25 15:38:38,356 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:38,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:38,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:38,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:38,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,359 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:38,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:38,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:38,360 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:38,360 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:38,360 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:38,360 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:38,360 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:38,360 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:38,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:38,362 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:38,362 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:38,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:38,362 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:38,394 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:38,394 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:38,394 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-25 15:38:38,395 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:38,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,395 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:38,395 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:38,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-03-25 15:38:38,608 INFO L428 AbstractCegarLoop]: === Iteration 18 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:38,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:38,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1855891612, now seen corresponding path program 1 times [2021-03-25 15:38:38,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:38,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557215183] [2021-03-25 15:38:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:38,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:38,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557215183] [2021-03-25 15:38:38,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029063759] [2021-03-25 15:38:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:38,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:38,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:38,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:38,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:38,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:38,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:38,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:38,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:38,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:38,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:38,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:38,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:38,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:38,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:38,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:38,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:38,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:38,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:38,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:38,733 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:38,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:38,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:38,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:38,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:38,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808543595] [2021-03-25 15:38:38,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:38,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:38,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:38,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:38,740 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 140 [2021-03-25 15:38:38,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:38,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 140 [2021-03-25 15:38:38,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:38,756 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:38,756 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:38,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:38,756 INFO L132 encePairwiseOnDemand]: 137/140 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:38,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:38,758 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7196428571428571 [2021-03-25 15:38:38,758 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:38,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:38,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:38,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:38,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,760 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:38,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:38,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:38,761 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:38,761 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:38,761 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:38,762 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:38,762 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:38,762 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:38,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:38,763 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:38,764 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:38,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:38,764 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:38,808 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:38,809 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:38,809 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 47 [2021-03-25 15:38:38,809 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:38,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:38,810 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:38,810 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:39,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-25 15:38:39,010 INFO L428 AbstractCegarLoop]: === Iteration 19 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:39,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:39,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2147306843, now seen corresponding path program 1 times [2021-03-25 15:38:39,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:39,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780442605] [2021-03-25 15:38:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:39,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:39,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780442605] [2021-03-25 15:38:39,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647795720] [2021-03-25 15:38:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:39,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:39,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:39,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,134 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:39,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:39,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:39,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:39,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160313705] [2021-03-25 15:38:39,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:39,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:39,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:39,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:39,138 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 141 [2021-03-25 15:38:39,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:39,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 141 [2021-03-25 15:38:39,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:39,154 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:39,154 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:39,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:39,155 INFO L132 encePairwiseOnDemand]: 138/141 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:39,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:39,156 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7145390070921985 [2021-03-25 15:38:39,156 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:39,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:39,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:39,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:39,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,159 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,160 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:39,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:39,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:39,160 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,161 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:39,161 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:39,161 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:39,161 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,162 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,163 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:39,164 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:39,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:39,164 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:39,201 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:39,202 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:39,202 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-03-25 15:38:39,203 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:39,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,203 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:39,203 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:39,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:39,408 INFO L428 AbstractCegarLoop]: === Iteration 20 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:39,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:39,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2146383322, now seen corresponding path program 1 times [2021-03-25 15:38:39,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:39,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295955256] [2021-03-25 15:38:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:39,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:39,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295955256] [2021-03-25 15:38:39,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747165235] [2021-03-25 15:38:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:39,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:39,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:39,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,532 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:39,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:39,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:39,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:39,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113845547] [2021-03-25 15:38:39,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:39,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:39,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:39,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:39,541 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 142 [2021-03-25 15:38:39,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:39,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 142 [2021-03-25 15:38:39,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:39,556 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:39,556 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:39,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:39,558 INFO L132 encePairwiseOnDemand]: 139/142 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:39,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:39,559 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7095070422535211 [2021-03-25 15:38:39,559 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:39,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:39,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:39,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:39,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,561 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:39,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:39,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:39,562 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,562 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:39,562 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:39,563 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:39,563 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,563 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,565 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:39,565 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:39,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:39,566 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:39,598 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:39,598 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:39,599 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 15:38:39,599 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:39,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,599 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:39,599 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:39,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:39,804 INFO L428 AbstractCegarLoop]: === Iteration 21 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:39,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:39,804 INFO L82 PathProgramCache]: Analyzing trace with hash 806619431, now seen corresponding path program 1 times [2021-03-25 15:38:39,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:39,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169826413] [2021-03-25 15:38:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:39,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:39,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169826413] [2021-03-25 15:38:39,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980721036] [2021-03-25 15:38:39,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:39,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:39,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:39,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:39,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:39,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:39,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:39,919 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:39,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:39,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:39,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:39,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:39,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203658725] [2021-03-25 15:38:39,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:39,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:39,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:39,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:39,927 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 143 [2021-03-25 15:38:39,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:39,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 143 [2021-03-25 15:38:39,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:39,947 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:39,947 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:39,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:39,947 INFO L132 encePairwiseOnDemand]: 140/143 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:39,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:39,949 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2021-03-25 15:38:39,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:39,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:39,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:39,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:39,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,951 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:39,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:39,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:39,952 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,952 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:39,952 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:39,952 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:39,953 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,953 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:39,954 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:39,954 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:39,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:39,955 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:39,988 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:39,988 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:39,989 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-25 15:38:39,989 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:39,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:39,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:39,989 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:40,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:40,212 INFO L428 AbstractCegarLoop]: === Iteration 22 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:40,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:40,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1694123112, now seen corresponding path program 1 times [2021-03-25 15:38:40,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:40,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060349273] [2021-03-25 15:38:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:40,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:40,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060349273] [2021-03-25 15:38:40,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662684580] [2021-03-25 15:38:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:40,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:40,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:40,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:40,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:40,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:40,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:40,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:40,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:40,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:40,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:40,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:40,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:40,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,335 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:40,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:40,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:40,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:40,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793126298] [2021-03-25 15:38:40,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:40,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:40,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:40,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:40,343 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 144 [2021-03-25 15:38:40,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:40,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:40,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 144 [2021-03-25 15:38:40,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:40,358 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:40,358 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:40,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:40,358 INFO L132 encePairwiseOnDemand]: 141/144 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:40,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:40,360 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6996527777777778 [2021-03-25 15:38:40,360 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:40,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:40,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:40,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:40,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:40,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:40,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:40,362 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:40,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:40,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:40,363 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:40,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:40,364 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:40,364 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:40,364 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:40,364 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:40,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:40,365 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:40,365 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:40,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:40,366 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:40,401 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:40,402 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:40,402 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-25 15:38:40,402 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:40,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:40,402 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:40,403 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:40,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-03-25 15:38:40,616 INFO L428 AbstractCegarLoop]: === Iteration 23 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:40,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:40,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1713340503, now seen corresponding path program 1 times [2021-03-25 15:38:40,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:40,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181284163] [2021-03-25 15:38:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:40,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:40,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181284163] [2021-03-25 15:38:40,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832199901] [2021-03-25 15:38:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:40,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:40,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:40,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:40,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:40,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:40,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:40,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:40,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:40,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:40,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:40,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:40,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:40,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:40,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:40,726 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:40,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:40,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:40,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:40,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:40,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522541324] [2021-03-25 15:38:40,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:40,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:40,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:40,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:40,733 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2021-03-25 15:38:40,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:40,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:40,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2021-03-25 15:38:40,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:40,749 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:40,749 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:40,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:40,749 INFO L132 encePairwiseOnDemand]: 142/145 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:40,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:40,751 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6948275862068966 [2021-03-25 15:38:40,751 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:40,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:40,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:40,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:40,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:40,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:40,753 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:40,753 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:40,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:40,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:40,756 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:40,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:40,756 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:40,756 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:40,757 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:40,757 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:40,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:40,758 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:40,758 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:40,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:40,759 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:40,791 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:40,792 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:40,792 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 15:38:40,792 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:40,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:40,792 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:40,792 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:40,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-03-25 15:38:40,993 INFO L428 AbstractCegarLoop]: === Iteration 24 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:40,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:40,993 INFO L82 PathProgramCache]: Analyzing trace with hash -2142689238, now seen corresponding path program 1 times [2021-03-25 15:38:40,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:40,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246923280] [2021-03-25 15:38:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:41,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:41,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246923280] [2021-03-25 15:38:41,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154148] [2021-03-25 15:38:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:41,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:41,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:41,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,107 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:41,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:41,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:41,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:41,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40989583] [2021-03-25 15:38:41,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:41,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:41,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:41,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:41,111 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 146 [2021-03-25 15:38:41,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:41,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 146 [2021-03-25 15:38:41,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:41,135 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:41,135 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:41,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:41,135 INFO L132 encePairwiseOnDemand]: 143/146 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:41,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:41,136 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.690068493150685 [2021-03-25 15:38:41,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:41,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:41,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:41,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:41,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,138 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,138 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:41,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:41,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:41,138 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,139 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:41,139 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:41,139 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:41,139 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,139 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,140 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:41,140 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:41,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:41,140 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:41,185 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:41,185 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:41,185 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 46 [2021-03-25 15:38:41,186 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:41,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,186 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:41,186 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:41,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:41,410 INFO L428 AbstractCegarLoop]: === Iteration 25 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:41,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2141765717, now seen corresponding path program 1 times [2021-03-25 15:38:41,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:41,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079698049] [2021-03-25 15:38:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:41,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:41,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079698049] [2021-03-25 15:38:41,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518351897] [2021-03-25 15:38:41,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:41,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:41,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:41,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,539 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:41,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:41,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:41,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:41,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509861929] [2021-03-25 15:38:41,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:41,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:41,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:41,544 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 147 [2021-03-25 15:38:41,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:41,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 147 [2021-03-25 15:38:41,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:41,580 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:41,580 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:41,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:41,581 INFO L132 encePairwiseOnDemand]: 144/147 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:41,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:41,582 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.685374149659864 [2021-03-25 15:38:41,582 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:41,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:41,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:41,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:41,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,584 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,584 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:41,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:41,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:41,587 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,587 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:41,587 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:41,587 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:41,587 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,588 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,590 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:41,590 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:41,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:41,590 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:41,626 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:41,626 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:41,626 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-03-25 15:38:41,627 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:41,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,627 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:41,628 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:41,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-03-25 15:38:41,844 INFO L428 AbstractCegarLoop]: === Iteration 26 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:41,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:41,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2140842196, now seen corresponding path program 1 times [2021-03-25 15:38:41,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:41,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500310455] [2021-03-25 15:38:41,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:41,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:41,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500310455] [2021-03-25 15:38:41,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734997232] [2021-03-25 15:38:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:41,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:41,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:41,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:41,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:41,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:41,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:41,964 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:41,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:41,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:41,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:41,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:41,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637233060] [2021-03-25 15:38:41,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:41,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:41,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:41,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:41,967 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 148 [2021-03-25 15:38:41,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:41,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 148 [2021-03-25 15:38:41,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:41,983 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:41,983 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:41,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:41,984 INFO L132 encePairwiseOnDemand]: 145/148 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:41,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:41,987 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6807432432432432 [2021-03-25 15:38:41,987 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:41,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:41,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:41,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:41,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,990 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:41,991 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:41,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:41,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:41,991 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,992 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:41,992 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:41,992 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:41,992 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,992 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:41,995 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:41,995 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:41,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:41,995 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:42,028 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:42,028 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:42,029 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-25 15:38:42,029 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:42,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,029 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:42,029 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:42,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:42,240 INFO L428 AbstractCegarLoop]: === Iteration 27 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:42,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:42,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1836674221, now seen corresponding path program 1 times [2021-03-25 15:38:42,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:42,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109711142] [2021-03-25 15:38:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:42,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:42,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109711142] [2021-03-25 15:38:42,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757962354] [2021-03-25 15:38:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:42,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:42,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:42,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:42,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:42,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:42,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:42,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:42,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:42,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:42,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:42,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:42,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:42,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,343 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:42,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:42,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:42,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:42,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688445249] [2021-03-25 15:38:42,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:42,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:42,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:42,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:42,350 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 149 [2021-03-25 15:38:42,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:42,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 149 [2021-03-25 15:38:42,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:42,360 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:42,360 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:42,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:42,360 INFO L132 encePairwiseOnDemand]: 146/149 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:42,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:42,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:42,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:42,362 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6761744966442953 [2021-03-25 15:38:42,362 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:42,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:42,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:42,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:42,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,363 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,363 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:42,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:42,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:42,364 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:42,364 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:42,364 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:42,364 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:42,364 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:42,364 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:42,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:42,366 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:42,366 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:42,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:42,366 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:42,396 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:42,396 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:42,396 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-25 15:38:42,397 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:42,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,397 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:42,397 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:42,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-03-25 15:38:42,597 INFO L428 AbstractCegarLoop]: === Iteration 28 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:42,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:42,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1570789394, now seen corresponding path program 1 times [2021-03-25 15:38:42,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:42,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600419920] [2021-03-25 15:38:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:42,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:42,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600419920] [2021-03-25 15:38:42,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382788864] [2021-03-25 15:38:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:42,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:42,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:42,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:42,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:42,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:42,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:42,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:42,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:42,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:42,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:42,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:42,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:42,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:42,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:42,706 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:42,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:42,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:42,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:42,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:42,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220930175] [2021-03-25 15:38:42,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:42,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:42,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:42,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:42,712 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 150 [2021-03-25 15:38:42,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:42,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 150 [2021-03-25 15:38:42,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:42,726 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:42,726 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:42,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:42,726 INFO L132 encePairwiseOnDemand]: 147/150 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:42,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:42,728 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6716666666666666 [2021-03-25 15:38:42,728 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:42,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:42,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:42,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:42,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,729 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,729 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:42,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:42,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:42,730 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:42,730 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:42,730 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:42,730 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:42,730 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:42,731 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:42,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:42,732 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:42,732 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:42,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:42,732 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:42,766 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:42,766 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:42,766 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 15:38:42,766 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:42,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:42,767 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:42,767 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:42,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-03-25 15:38:42,989 INFO L428 AbstractCegarLoop]: === Iteration 29 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:42,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2138071633, now seen corresponding path program 1 times [2021-03-25 15:38:42,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:42,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692354064] [2021-03-25 15:38:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:43,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:43,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692354064] [2021-03-25 15:38:43,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789394468] [2021-03-25 15:38:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:43,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:43,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:43,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,106 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:43,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:43,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:43,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:43,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602485071] [2021-03-25 15:38:43,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:43,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:43,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:43,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:43,110 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 151 [2021-03-25 15:38:43,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:43,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 151 [2021-03-25 15:38:43,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:43,124 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:43,124 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:43,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:43,125 INFO L132 encePairwiseOnDemand]: 148/151 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:43,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:43,126 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6672185430463576 [2021-03-25 15:38:43,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:43,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:43,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:43,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:43,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,128 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,128 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:43,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:43,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:43,128 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,129 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:43,131 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:43,131 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:43,131 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,132 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,134 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:43,134 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:43,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:43,134 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:43,180 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:43,181 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:43,181 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-03-25 15:38:43,182 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:43,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,182 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:43,182 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:43,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-03-25 15:38:43,404 INFO L428 AbstractCegarLoop]: === Iteration 30 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:43,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:43,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2137148112, now seen corresponding path program 1 times [2021-03-25 15:38:43,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:43,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988748175] [2021-03-25 15:38:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:43,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:43,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988748175] [2021-03-25 15:38:43,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173183840] [2021-03-25 15:38:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:43,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:43,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:43,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,529 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:43,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:43,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:43,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:43,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112767169] [2021-03-25 15:38:43,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:43,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:43,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:43,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:43,532 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 152 [2021-03-25 15:38:43,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:43,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 152 [2021-03-25 15:38:43,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:43,549 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:43,549 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:43,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:43,550 INFO L132 encePairwiseOnDemand]: 149/152 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:43,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:43,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:43,551 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.662828947368421 [2021-03-25 15:38:43,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:43,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:43,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:43,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:43,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,553 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,554 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:43,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:43,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:43,554 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,554 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:43,555 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:43,555 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:43,555 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,556 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,557 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:43,557 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:43,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:43,558 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:43,593 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:43,593 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:43,593 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-25 15:38:43,593 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:43,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,594 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:43,594 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:43,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:43,808 INFO L428 AbstractCegarLoop]: === Iteration 31 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:43,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:43,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2136224591, now seen corresponding path program 1 times [2021-03-25 15:38:43,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:43,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735337938] [2021-03-25 15:38:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:43,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:43,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735337938] [2021-03-25 15:38:43,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147720930] [2021-03-25 15:38:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:43,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:43,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:43,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:43,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:43,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:43,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:43,935 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:43,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:43,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:43,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:43,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:43,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855359887] [2021-03-25 15:38:43,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:43,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:43,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:43,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:43,938 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 153 [2021-03-25 15:38:43,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:43,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 153 [2021-03-25 15:38:43,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:43,950 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:43,950 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:43,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:43,951 INFO L132 encePairwiseOnDemand]: 150/153 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:43,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:43,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:43,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:43,953 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2021-03-25 15:38:43,953 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:43,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:43,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:43,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:43,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,955 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,955 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:43,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:43,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:43,955 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,955 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:43,955 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:43,956 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:43,956 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,956 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:43,959 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:43,959 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:43,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:43,959 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:43,988 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:43,988 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:43,988 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-25 15:38:43,989 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:43,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:43,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:43,989 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:44,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-03-25 15:38:44,212 INFO L428 AbstractCegarLoop]: === Iteration 32 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:44,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:44,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1979225330, now seen corresponding path program 1 times [2021-03-25 15:38:44,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:44,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106568946] [2021-03-25 15:38:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:44,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:44,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106568946] [2021-03-25 15:38:44,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486616109] [2021-03-25 15:38:44,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:44,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:44,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:44,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:44,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:44,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:44,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:44,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:44,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:44,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:44,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:44,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:44,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:44,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:44,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:44,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:44,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:44,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:44,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:44,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,327 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:44,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:44,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:44,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:44,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084022840] [2021-03-25 15:38:44,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:44,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:44,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:44,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:44,334 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 154 [2021-03-25 15:38:44,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:44,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:44,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 154 [2021-03-25 15:38:44,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:44,355 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:44,355 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:44,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:44,355 INFO L132 encePairwiseOnDemand]: 151/154 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:44,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:44,356 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6542207792207793 [2021-03-25 15:38:44,357 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:44,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:44,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:44,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:44,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:44,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:44,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:44,359 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:44,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:44,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:44,360 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:44,360 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:44,360 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:44,360 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:44,360 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:44,360 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:44,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:44,362 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:44,362 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:44,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:44,362 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:44,398 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:44,398 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:44,398 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-25 15:38:44,399 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:44,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:44,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:44,400 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:44,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:44,605 INFO L428 AbstractCegarLoop]: === Iteration 33 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:44,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1428238285, now seen corresponding path program 1 times [2021-03-25 15:38:44,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:44,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515183679] [2021-03-25 15:38:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:44,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:44,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515183679] [2021-03-25 15:38:44,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380184315] [2021-03-25 15:38:44,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:44,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:44,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:44,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:44,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:44,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:44,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:44,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:44,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:44,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:44,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:44,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:44,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:44,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:44,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:44,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,711 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:44,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:44,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:44,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:44,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945551531] [2021-03-25 15:38:44,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:44,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:44,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:44,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:44,717 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 155 [2021-03-25 15:38:44,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:44,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:44,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 155 [2021-03-25 15:38:44,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:44,733 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:44,733 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:44,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:44,734 INFO L132 encePairwiseOnDemand]: 152/155 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:44,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:44,735 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.65 [2021-03-25 15:38:44,735 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:44,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:44,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:44,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:44,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:44,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:44,737 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:44,737 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:44,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:44,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:44,738 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:44,738 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:44,738 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:44,738 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:44,738 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:44,738 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:44,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:44,739 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:44,739 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:44,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:44,740 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:44,772 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:44,772 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:44,772 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-25 15:38:44,773 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:44,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:44,774 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:44,774 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:44,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-03-25 15:38:44,980 INFO L428 AbstractCegarLoop]: === Iteration 34 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:44,980 INFO L82 PathProgramCache]: Analyzing trace with hash -540734604, now seen corresponding path program 1 times [2021-03-25 15:38:44,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:44,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320744234] [2021-03-25 15:38:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:44,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:44,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:44,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:44,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:45,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320744234] [2021-03-25 15:38:45,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470373468] [2021-03-25 15:38:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:45,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:45,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:45,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,088 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:45,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:45,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:45,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:45,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240930088] [2021-03-25 15:38:45,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:45,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:45,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:45,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:45,099 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 156 [2021-03-25 15:38:45,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:45,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 156 [2021-03-25 15:38:45,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:45,115 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:45,115 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:45,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:45,115 INFO L132 encePairwiseOnDemand]: 153/156 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:45,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:45,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:45,117 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2021-03-25 15:38:45,117 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:45,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:45,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:45,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:45,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,119 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,119 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:45,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:45,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:45,119 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,120 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:45,120 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:45,120 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:45,120 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,120 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,122 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:45,122 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:45,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:45,122 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:45,156 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:45,156 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:45,156 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 15:38:45,157 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:45,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,157 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:45,157 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:45,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-03-25 15:38:45,357 INFO L428 AbstractCegarLoop]: === Iteration 35 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:45,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:45,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2132530507, now seen corresponding path program 1 times [2021-03-25 15:38:45,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:45,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714531825] [2021-03-25 15:38:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:45,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:45,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714531825] [2021-03-25 15:38:45,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744105957] [2021-03-25 15:38:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:45,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:45,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:45,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,442 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:45,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:45,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:45,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:45,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539477692] [2021-03-25 15:38:45,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:45,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:45,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:45,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:45,446 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 157 [2021-03-25 15:38:45,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:45,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 157 [2021-03-25 15:38:45,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:45,471 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:45,471 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:45,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:45,471 INFO L132 encePairwiseOnDemand]: 154/157 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:45,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:45,473 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.64171974522293 [2021-03-25 15:38:45,473 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:45,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:45,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:45,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:45,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,475 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,476 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:45,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:45,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:45,476 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:45,476 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:45,477 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:45,477 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,477 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,478 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:45,478 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:45,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:45,478 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:45,510 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:45,510 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:45,511 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-25 15:38:45,511 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:45,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,511 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:45,511 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:45,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-03-25 15:38:45,712 INFO L428 AbstractCegarLoop]: === Iteration 36 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:45,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:45,712 INFO L82 PathProgramCache]: Analyzing trace with hash -2131606986, now seen corresponding path program 1 times [2021-03-25 15:38:45,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:45,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728683350] [2021-03-25 15:38:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:45,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:45,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728683350] [2021-03-25 15:38:45,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127233378] [2021-03-25 15:38:45,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:45,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:45,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:45,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:45,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:45,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:45,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:45,820 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:45,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:45,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:45,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:45,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:45,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13050783] [2021-03-25 15:38:45,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:45,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:45,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:45,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:45,823 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 158 [2021-03-25 15:38:45,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:45,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 158 [2021-03-25 15:38:45,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:45,837 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:45,837 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:45,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:45,838 INFO L132 encePairwiseOnDemand]: 155/158 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:45,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:45,839 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6376582278481012 [2021-03-25 15:38:45,839 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:45,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:45,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:45,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:45,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,840 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,840 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:45,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:45,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:45,840 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,840 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:45,841 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:45,841 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:45,841 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,841 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:45,842 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:45,842 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:45,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:45,842 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:45,874 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:45,874 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:45,874 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-25 15:38:45,874 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:45,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:45,875 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:45,875 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:46,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-03-25 15:38:46,080 INFO L428 AbstractCegarLoop]: === Iteration 37 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:46,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2121776439, now seen corresponding path program 1 times [2021-03-25 15:38:46,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:46,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282153505] [2021-03-25 15:38:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:46,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:46,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282153505] [2021-03-25 15:38:46,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092024098] [2021-03-25 15:38:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:46,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:46,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:46,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,186 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:46,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:46,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:46,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:46,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892855560] [2021-03-25 15:38:46,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:46,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:46,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:46,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:46,195 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 159 [2021-03-25 15:38:46,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:46,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 159 [2021-03-25 15:38:46,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:46,214 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:46,214 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:46,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:46,215 INFO L132 encePairwiseOnDemand]: 156/159 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:46,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:46,216 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6336477987421384 [2021-03-25 15:38:46,216 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:46,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:46,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:46,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:46,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,217 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,218 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:46,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:46,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:46,218 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,218 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:46,218 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:46,218 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:46,219 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,219 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,220 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:46,220 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:46,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:46,221 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:46,253 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:46,253 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:46,253 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-03-25 15:38:46,254 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:46,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,254 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:46,254 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:46,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-03-25 15:38:46,467 INFO L428 AbstractCegarLoop]: === Iteration 38 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1285687176, now seen corresponding path program 1 times [2021-03-25 15:38:46,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:46,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677273727] [2021-03-25 15:38:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:46,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:46,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677273727] [2021-03-25 15:38:46,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251868779] [2021-03-25 15:38:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:46,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:46,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:46,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,566 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:46,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:46,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:46,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:46,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210452570] [2021-03-25 15:38:46,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:46,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:46,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:46,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:46,573 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 160 [2021-03-25 15:38:46,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:46,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 160 [2021-03-25 15:38:46,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:46,587 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:46,588 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:46,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:46,588 INFO L132 encePairwiseOnDemand]: 157/160 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:46,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:46,589 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6296875 [2021-03-25 15:38:46,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:46,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:46,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:46,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:46,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,591 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,591 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:46,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:46,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:46,591 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,591 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:46,591 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:46,591 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:46,592 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,592 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,593 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:46,593 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:46,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:46,593 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:46,620 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:46,621 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:46,621 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-03-25 15:38:46,621 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:46,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,621 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:46,621 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:46,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-03-25 15:38:46,822 INFO L428 AbstractCegarLoop]: === Iteration 39 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:46,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:46,822 INFO L82 PathProgramCache]: Analyzing trace with hash -398183495, now seen corresponding path program 1 times [2021-03-25 15:38:46,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:46,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641178722] [2021-03-25 15:38:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:46,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:46,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641178722] [2021-03-25 15:38:46,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340419021] [2021-03-25 15:38:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:46,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:46,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:46,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:46,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:46,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:46,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:46,966 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:46,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:46,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:46,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:46,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:46,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141231053] [2021-03-25 15:38:46,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:46,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:46,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:46,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:46,972 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 161 [2021-03-25 15:38:46,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:46,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 161 [2021-03-25 15:38:46,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:46,989 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:46,989 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:46,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:46,989 INFO L132 encePairwiseOnDemand]: 158/161 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:46,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:46,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:46,990 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6257763975155279 [2021-03-25 15:38:46,990 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:46,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:46,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:46,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:46,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,992 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:46,992 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:46,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:46,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:46,992 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:46,993 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:46,993 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:46,993 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,993 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:46,995 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:46,995 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:46,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:46,995 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:47,028 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:47,029 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:47,029 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 15:38:47,029 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:47,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,029 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:47,029 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:47,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-03-25 15:38:47,253 INFO L428 AbstractCegarLoop]: === Iteration 40 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:47,253 INFO L82 PathProgramCache]: Analyzing trace with hash -2127912902, now seen corresponding path program 1 times [2021-03-25 15:38:47,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:47,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429754067] [2021-03-25 15:38:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:47,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:47,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429754067] [2021-03-25 15:38:47,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095546572] [2021-03-25 15:38:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:47,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:47,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:47,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:47,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:47,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:47,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:47,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:47,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:47,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:47,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:47,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:47,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:47,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:47,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:47,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,371 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:47,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:47,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:47,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:47,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067745454] [2021-03-25 15:38:47,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:47,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:47,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:47,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:47,375 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2021-03-25 15:38:47,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:47,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2021-03-25 15:38:47,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:47,393 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:47,393 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:47,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:47,393 INFO L132 encePairwiseOnDemand]: 159/162 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:47,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:47,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:47,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6219135802469136 [2021-03-25 15:38:47,394 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:47,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:47,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:47,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:47,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,396 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,396 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:47,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:47,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:47,396 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:47,397 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:47,397 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:47,397 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:47,397 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:47,397 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:47,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:47,398 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:47,398 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:47,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:47,399 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:47,432 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:47,432 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:47,433 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 15:38:47,433 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:47,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,433 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:47,433 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:47,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-03-25 15:38:47,648 INFO L428 AbstractCegarLoop]: === Iteration 41 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:47,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:47,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2126989381, now seen corresponding path program 1 times [2021-03-25 15:38:47,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:47,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461160115] [2021-03-25 15:38:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:47,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:47,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461160115] [2021-03-25 15:38:47,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903742963] [2021-03-25 15:38:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:47,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:47,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:47,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:47,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:47,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:47,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:47,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:47,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:47,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:47,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:47,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:47,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:47,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:47,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:47,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:47,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:47,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:47,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:47,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:47,742 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:47,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:47,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:47,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:47,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:47,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945396919] [2021-03-25 15:38:47,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:47,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:47,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:47,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:47,745 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 163 [2021-03-25 15:38:47,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:47,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 163 [2021-03-25 15:38:47,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:47,762 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:47,763 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:47,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:47,763 INFO L132 encePairwiseOnDemand]: 160/163 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:47,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:47,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:47,764 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6180981595092024 [2021-03-25 15:38:47,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:47,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:47,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:47,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:47,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,765 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,765 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:47,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:47,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:47,766 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:47,766 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:47,766 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:47,766 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:47,766 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:47,766 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:47,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:47,768 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:47,768 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:47,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:47,771 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:47,799 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:47,799 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:47,800 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-25 15:38:47,800 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:47,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:47,800 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:47,800 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:48,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:48,001 INFO L428 AbstractCegarLoop]: === Iteration 42 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2126065860, now seen corresponding path program 1 times [2021-03-25 15:38:48,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:48,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928854978] [2021-03-25 15:38:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:48,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:48,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928854978] [2021-03-25 15:38:48,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814683013] [2021-03-25 15:38:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:48,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:48,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:48,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,095 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:48,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:48,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:48,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:48,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274741947] [2021-03-25 15:38:48,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:48,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:48,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:48,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:48,098 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 164 [2021-03-25 15:38:48,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:48,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 164 [2021-03-25 15:38:48,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:48,112 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:48,112 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:48,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:48,112 INFO L132 encePairwiseOnDemand]: 161/164 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:48,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:48,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:48,114 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.614329268292683 [2021-03-25 15:38:48,114 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:48,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:48,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:48,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:48,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,116 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,116 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:48,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:48,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:48,117 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,117 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:48,117 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:48,117 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:48,119 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,119 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,121 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:48,121 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:48,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:48,122 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:48,160 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:48,160 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:48,161 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-03-25 15:38:48,161 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:48,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,161 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:48,162 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:48,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:48,372 INFO L428 AbstractCegarLoop]: === Iteration 43 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1143136067, now seen corresponding path program 1 times [2021-03-25 15:38:48,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:48,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075352322] [2021-03-25 15:38:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:48,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:48,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075352322] [2021-03-25 15:38:48,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442001070] [2021-03-25 15:38:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:48,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 15:38:48,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:48,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,461 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 15:38:48,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:48,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:48,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:48,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895659715] [2021-03-25 15:38:48,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:48,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:48,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:48,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:48,468 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 165 [2021-03-25 15:38:48,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:48,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 165 [2021-03-25 15:38:48,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:48,480 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:48,480 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:48,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:48,481 INFO L132 encePairwiseOnDemand]: 162/165 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:48,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:48,482 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6106060606060606 [2021-03-25 15:38:48,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:48,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:48,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:48,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:48,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,483 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,483 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:48,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:48,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:48,484 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,484 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:48,484 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:48,484 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:48,484 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,484 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,486 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:48,486 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:48,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:48,486 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:48,519 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:48,519 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:48,520 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 15:38:48,520 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:48,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,520 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:48,520 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:48,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-03-25 15:38:48,743 INFO L428 AbstractCegarLoop]: === Iteration 44 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:48,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:48,743 INFO L82 PathProgramCache]: Analyzing trace with hash -255632386, now seen corresponding path program 1 times [2021-03-25 15:38:48,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:48,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794376559] [2021-03-25 15:38:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:48,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:48,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794376559] [2021-03-25 15:38:48,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830782681] [2021-03-25 15:38:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:48,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 15:38:48,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:48,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 15:38:48,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:48,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 15:38:48,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:48,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:48,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:48,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:48,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-03-25 15:38:48,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402650266] [2021-03-25 15:38:48,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:48,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:48,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:48,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:48,844 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 166 [2021-03-25 15:38:48,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:48,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 166 [2021-03-25 15:38:48,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:48,855 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:48,855 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:48,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 2/11 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-03-25 15:38:48,855 INFO L132 encePairwiseOnDemand]: 163/166 looper letters, 3 selfloop transitions, 3 changer transitions 0/11 dead transitions. [2021-03-25 15:38:48,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:48,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 15:38:48,856 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6069277108433735 [2021-03-25 15:38:48,857 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 15:38:48,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 15:38:48,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:48,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 15:38:48,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,858 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,858 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 403 transitions. [2021-03-25 15:38:48,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 62 flow [2021-03-25 15:38:48,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 48 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:48,859 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,859 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:48,859 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:48,859 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:48,859 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,859 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:48,861 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:38:48,861 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:38:48,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 15:38:48,861 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:48,893 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:48,893 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:48,893 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-25 15:38:48,894 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:48,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:48,894 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:48,894 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:49,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:49,115 INFO L428 AbstractCegarLoop]: === Iteration 45 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:49,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:49,115 INFO L82 PathProgramCache]: Analyzing trace with hash -2123295297, now seen corresponding path program 1 times [2021-03-25 15:38:49,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:49,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524671726] [2021-03-25 15:38:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:49,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,175 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 15:38:49,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:49,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524671726] [2021-03-25 15:38:49,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012638165] [2021-03-25 15:38:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:49,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 15:38:49,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 15:38:49,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:38:49,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:49,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:49,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:49,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 15:38:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:49,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 15:38:49,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-03-25 15:38:49,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025877740] [2021-03-25 15:38:49,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:38:49,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:49,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:38:49,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:38:49,277 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 167 [2021-03-25 15:38:49,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:49,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:49,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 167 [2021-03-25 15:38:49,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:49,295 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2021-03-25 15:38:49,295 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:38:49,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 12 events. 2/12 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 33. Up to 7 conditions per place. [2021-03-25 15:38:49,296 INFO L132 encePairwiseOnDemand]: 164/167 looper letters, 5 selfloop transitions, 3 changer transitions 0/12 dead transitions. [2021-03-25 15:38:49,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 12 transitions, 73 flow [2021-03-25 15:38:49,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:38:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:38:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2021-03-25 15:38:49,297 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5404191616766467 [2021-03-25 15:38:49,297 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2021-03-25 15:38:49,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2021-03-25 15:38:49,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:49,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2021-03-25 15:38:49,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:49,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:49,298 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:49,298 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 4 states and 361 transitions. [2021-03-25 15:38:49,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 12 transitions, 73 flow [2021-03-25 15:38:49,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 57 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-03-25 15:38:49,299 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:49,299 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 15:38:49,299 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2021-03-25 15:38:49,299 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:49,300 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:49,300 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:49,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 48 flow [2021-03-25 15:38:49,301 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2021-03-25 15:38:49,301 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 15:38:49,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 12 events. 2/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 24. Up to 6 conditions per place. [2021-03-25 15:38:49,302 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 15:38:49,351 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 15:38:49,351 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:38:49,351 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-03-25 15:38:49,351 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 44 flow [2021-03-25 15:38:49,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:49,352 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:38:49,352 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:38:49,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 15:38:49,569 INFO L428 AbstractCegarLoop]: === Iteration 46 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 15:38:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:38:49,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1519374976, now seen corresponding path program 1 times [2021-03-25 15:38:49,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:38:49,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34340631] [2021-03-25 15:38:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:38:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:38:49,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:49,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:38:49,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:38:49,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:38:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:38:49,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34340631] [2021-03-25 15:38:49,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:38:49,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 15:38:49,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531722855] [2021-03-25 15:38:49,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:38:49,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:38:49,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:38:49,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:38:49,593 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 168 [2021-03-25 15:38:49,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:49,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:38:49,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 168 [2021-03-25 15:38:49,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:38:49,600 INFO L129 PetriNetUnfolder]: 1/7 cut-off events. [2021-03-25 15:38:49,600 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2021-03-25 15:38:49,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 7 events. 1/7 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 11. Up to 3 conditions per place. [2021-03-25 15:38:49,601 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-25 15:38:49,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 31 flow [2021-03-25 15:38:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:38:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:38:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2021-03-25 15:38:49,602 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2021-03-25 15:38:49,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2021-03-25 15:38:49,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2021-03-25 15:38:49,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:38:49,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2021-03-25 15:38:49,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:49,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:49,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:49,604 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 44 flow. Second operand 3 states and 301 transitions. [2021-03-25 15:38:49,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 31 flow [2021-03-25 15:38:49,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 7 transitions, 23 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-25 15:38:49,604 INFO L241 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2021-03-25 15:38:49,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2021-03-25 15:38:49,604 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, -8 predicate places. [2021-03-25 15:38:49,604 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:38:49,605 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 12 places, 0 transitions, 0 flow [2021-03-25 15:38:49,605 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 12 places, 0 transitions, 0 flow [2021-03-25 15:38:49,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 15:38:49,605 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 15:38:49,605 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:38:49,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 15:38:49,605 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 15:38:49,605 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 15:38:49,605 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:38:49,605 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 15:38:49,606 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 15:38:49,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:38:49,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-25 15:38:49,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 03:38:49 BasicIcfg [2021-03-25 15:38:49,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 15:38:49,612 INFO L168 Benchmark]: Toolchain (without parser) took 24128.51 ms. Allocated memory was 325.1 MB in the beginning and 469.8 MB in the end (delta: 144.7 MB). Free memory was 288.0 MB in the beginning and 432.9 MB in the end (delta: -144.9 MB). Peak memory consumption was 98.6 kB. Max. memory is 16.0 GB. [2021-03-25 15:38:49,612 INFO L168 Benchmark]: CDTParser took 0.96 ms. Allocated memory is still 325.1 MB. Free memory was 306.4 MB in the beginning and 306.3 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:38:49,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.41 ms. Allocated memory is still 325.1 MB. Free memory was 287.8 MB in the beginning and 289.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-03-25 15:38:49,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.38 ms. Allocated memory is still 325.1 MB. Free memory was 289.3 MB in the beginning and 287.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:38:49,613 INFO L168 Benchmark]: Boogie Preprocessor took 41.93 ms. Allocated memory is still 325.1 MB. Free memory was 287.2 MB in the beginning and 285.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:38:49,613 INFO L168 Benchmark]: RCFGBuilder took 478.92 ms. Allocated memory is still 325.1 MB. Free memory was 285.1 MB in the beginning and 263.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:38:49,613 INFO L168 Benchmark]: TraceAbstraction took 23022.24 ms. Allocated memory was 325.1 MB in the beginning and 469.8 MB in the end (delta: 144.7 MB). Free memory was 262.0 MB in the beginning and 432.9 MB in the end (delta: -170.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:38:49,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96 ms. Allocated memory is still 325.1 MB. Free memory was 306.4 MB in the beginning and 306.3 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 518.41 ms. Allocated memory is still 325.1 MB. Free memory was 287.8 MB in the beginning and 289.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 60.38 ms. Allocated memory is still 325.1 MB. Free memory was 289.3 MB in the beginning and 287.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 41.93 ms. Allocated memory is still 325.1 MB. Free memory was 287.2 MB in the beginning and 285.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 478.92 ms. Allocated memory is still 325.1 MB. Free memory was 285.1 MB in the beginning and 263.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 23022.24 ms. Allocated memory was 325.1 MB in the beginning and 469.8 MB in the end (delta: 144.7 MB). Free memory was 262.0 MB in the beginning and 432.9 MB in the end (delta: -170.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3264.1ms, 61 PlacesBefore, 20 PlacesAfterwards, 62 TransitionsBefore, 18 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 48 TotalNumberOfCompositions, 193 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 193, positive: 189, positive conditional: 0, positive unconditional: 189, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 177, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 177, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 177, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 193, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 177, unknown conditional: 0, unknown unconditional: 177] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1532.5ms, 22 PlacesBefore, 14 PlacesAfterwards, 17 TransitionsBefore, 10 TransitionsAfterwards, 60 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 28 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 22, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 22, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 24, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 22, unknown conditional: 0, unknown unconditional: 22] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.2ms, 15 PlacesBefore, 14 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.7ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.6ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.7ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.2ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 53.6ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.4ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.4ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.5ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38.4ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.3ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.7ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.1ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.6ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.8ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.7ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 46.8ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.0ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.5ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.7ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.7ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.9ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 46.3ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38.3ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.1ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.7ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.1ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 49.0ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.3ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.3ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.7ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.0ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.1ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.6ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.0ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.3ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.0ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.5ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.4ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.1ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41.4ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.0ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.8ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 51.2ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 10 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 12 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 706]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 22920.4ms, OverallIterations: 46, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 1158.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3331.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 139 SDtfs, 3 SDslu, 3 SDs, 0 SdLazy, 460 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 439.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 567 GetRequests, 429 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 449.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=3, InterpolantAutomatonStates: 181, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 329.7ms SsaConstructionTime, 965.2ms SatisfiabilityAnalysisTime, 2779.0ms InterpolantComputationTime, 802 NumberOfCodeBlocks, 802 NumberOfCodeBlocksAsserted, 89 NumberOfCheckSat, 713 ConstructedInterpolants, 0 QuantifiedInterpolants, 1277 SizeOfPredicates, 24 NumberOfNonLiveVariables, 5066 ConjunctsInSsa, 199 ConjunctsInUnsatCore, 89 InterpolantComputations, 3 PerfectInterpolantSequences, 3/257 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...