/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 23:58:24,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 23:58:24,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 23:58:24,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 23:58:24,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 23:58:24,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 23:58:24,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 23:58:24,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 23:58:24,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 23:58:24,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 23:58:24,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 23:58:24,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 23:58:24,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 23:58:24,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 23:58:24,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 23:58:24,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 23:58:24,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 23:58:24,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 23:58:24,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 23:58:24,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 23:58:24,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 23:58:24,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 23:58:24,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 23:58:24,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 23:58:24,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 23:58:24,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-28 23:58:24,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-28 23:58:24,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-28 23:58:24,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-28 23:58:24,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-28 23:58:24,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-28 23:58:24,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-28 23:58:24,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-28 23:58:24,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 23:58:24,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 23:58:24,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 23:58:24,901 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-28 23:58:24,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 23:58:24,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 23:58:24,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 23:58:24,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 23:58:24,988 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 23:58:24,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 23:58:24,989 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 23:58:24,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 23:58:24,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 23:58:24,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 23:58:24,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 23:58:24,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 23:58:24,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 23:58:24,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 23:58:24,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 23:58:24,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 23:58:24,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 23:58:24,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 23:58:24,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 23:58:24,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 23:58:24,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 23:58:24,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 23:58:24,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 23:58:24,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 23:58:24,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 23:58:24,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 23:58:24,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 23:58:24,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 23:58:24,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 23:58:24,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 23:58:24,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 23:58:25,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 23:58:25,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 23:58:25,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 23:58:25,672 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 23:58:25,672 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 23:58:25,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2021-04-28 23:58:25,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a70251e/3c0750d393ba40abb21d9923fb68a095/FLAG06e5883f7 [2021-04-28 23:58:26,645 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 23:58:26,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2021-04-28 23:58:26,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a70251e/3c0750d393ba40abb21d9923fb68a095/FLAG06e5883f7 [2021-04-28 23:58:26,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a70251e/3c0750d393ba40abb21d9923fb68a095 [2021-04-28 23:58:26,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 23:58:26,942 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 23:58:26,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 23:58:26,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 23:58:26,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 23:58:26,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:58:26" (1/1) ... [2021-04-28 23:58:26,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1723b44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:26, skipping insertion in model container [2021-04-28 23:58:26,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:58:26" (1/1) ... [2021-04-28 23:58:26,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 23:58:27,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 23:58:27,266 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-wmm/safe016_tso.oepc.i[950,963] [2021-04-28 23:58:27,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:58:27,791 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 23:58:27,819 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-wmm/safe016_tso.oepc.i[950,963] [2021-04-28 23:58:27,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:58:28,024 INFO L208 MainTranslator]: Completed translation [2021-04-28 23:58:28,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28 WrapperNode [2021-04-28 23:58:28,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 23:58:28,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 23:58:28,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 23:58:28,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 23:58:28,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (1/1) ... [2021-04-28 23:58:28,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (1/1) ... [2021-04-28 23:58:28,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 23:58:28,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 23:58:28,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 23:58:28,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 23:58:28,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (1/1) ... [2021-04-28 23:58:28,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (1/1) ... [2021-04-28 23:58:28,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (1/1) ... [2021-04-28 23:58:28,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (1/1) ... [2021-04-28 23:58:28,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (1/1) ... [2021-04-28 23:58:28,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (1/1) ... [2021-04-28 23:58:28,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (1/1) ... [2021-04-28 23:58:28,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 23:58:28,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 23:58:28,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 23:58:28,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 23:58:28,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (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 [2021-04-28 23:58:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 23:58:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 23:58:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 23:58:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 23:58:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-28 23:58:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-28 23:58:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-28 23:58:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-28 23:58:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-28 23:58:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-28 23:58:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-04-28 23:58:28,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-04-28 23:58:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 23:58:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 23:58:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 23:58:28,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 23:58:28,288 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 23:58:29,016 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 23:58:29,016 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-28 23:58:29,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:58:29 BoogieIcfgContainer [2021-04-28 23:58:29,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 23:58:29,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 23:58:29,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 23:58:29,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 23:58:29,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 11:58:26" (1/3) ... [2021-04-28 23:58:29,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d2a74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:58:29, skipping insertion in model container [2021-04-28 23:58:29,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:58:28" (2/3) ... [2021-04-28 23:58:29,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d2a74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:58:29, skipping insertion in model container [2021-04-28 23:58:29,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:58:29" (3/3) ... [2021-04-28 23:58:29,039 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2021-04-28 23:58:29,056 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 23:58:29,068 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-28 23:58:29,070 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 23:58:29,158 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,159 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,159 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,160 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,160 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,161 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,162 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,162 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,162 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,163 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,163 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,164 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,164 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,165 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,165 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,167 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,168 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,175 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,176 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,176 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,179 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,180 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,181 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,181 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,182 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,183 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,184 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,185 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,185 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,186 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,187 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,187 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,187 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,188 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,188 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,188 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,189 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,193 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,194 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,203 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,203 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,204 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,204 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,207 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,209 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,212 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,212 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,213 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,213 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:58:29,216 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 23:58:29,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-04-28 23:58:29,301 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 23:58:29,301 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 23:58:29,301 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 23:58:29,302 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 23:58:29,302 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 23:58:29,302 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 23:58:29,302 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 23:58:29,302 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 23:58:29,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2021-04-28 23:58:29,395 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-04-28 23:58:29,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:58:29,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-04-28 23:58:29,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 85 transitions, 190 flow [2021-04-28 23:58:29,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 67 transitions, 146 flow [2021-04-28 23:58:29,417 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:58:29,445 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 67 transitions, 146 flow [2021-04-28 23:58:29,453 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 67 transitions, 146 flow [2021-04-28 23:58:29,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 67 transitions, 146 flow [2021-04-28 23:58:29,482 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-04-28 23:58:29,483 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:58:29,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 1/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-04-28 23:58:29,488 INFO L146 LiptonReduction]: Number of co-enabled transitions 1250 [2021-04-28 23:58:35,595 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:58:35,770 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:58:35,956 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:58:36,161 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:58:36,332 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:58:36,502 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:58:36,672 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:58:36,859 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:58:37,048 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:58:37,205 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:58:37,395 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:58:37,606 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:58:38,927 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:58:39,132 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:58:39,360 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:58:39,605 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:58:39,845 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:58:40,083 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:58:40,277 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:58:40,460 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:58:41,570 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:58:41,735 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:58:41,953 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:58:42,210 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:58:42,453 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:58:42,704 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:58:42,912 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:58:43,108 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:58:43,352 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:58:43,655 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:58:43,904 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:58:44,099 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:58:44,329 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:58:44,598 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:58:44,943 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2021-04-28 23:58:45,048 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-04-28 23:58:45,269 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2021-04-28 23:58:45,615 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-04-28 23:58:45,731 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 23:58:45,969 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-04-28 23:58:46,083 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 23:58:46,226 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:58:46,399 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:58:46,631 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:58:46,893 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:58:47,023 INFO L158 LiptonReduction]: Checked pairs total: 10607 [2021-04-28 23:58:47,024 INFO L160 LiptonReduction]: Total number of compositions: 121 [2021-04-28 23:58:47,028 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17613 [2021-04-28 23:58:47,060 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2021-04-28 23:58:47,060 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:58:47,060 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:58:47,061 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:58:47,062 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:58:47,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:58:47,073 INFO L82 PathProgramCache]: Analyzing trace with hash 888822923, now seen corresponding path program 1 times [2021-04-28 23:58:47,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:58:47,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292265462] [2021-04-28 23:58:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:58:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:58:47,546 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:58:47,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:58:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:58:47,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292265462] [2021-04-28 23:58:47,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:58:47,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 23:58:47,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35504994] [2021-04-28 23:58:47,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 23:58:47,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:58:47,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 23:58:47,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 23:58:47,614 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 206 [2021-04-28 23:58:47,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:47,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:58:47,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 206 [2021-04-28 23:58:47,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:58:48,141 INFO L129 PetriNetUnfolder]: 796/2150 cut-off events. [2021-04-28 23:58:48,142 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:58:48,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 2150 events. 796/2150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 21468 event pairs, 348 based on Foata normal form. 0/1216 useless extension candidates. Maximal degree in co-relation 3341. Up to 857 conditions per place. [2021-04-28 23:58:48,173 INFO L132 encePairwiseOnDemand]: 183/206 looper letters, 7 selfloop transitions, 7 changer transitions 43/96 dead transitions. [2021-04-28 23:58:48,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 282 flow [2021-04-28 23:58:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 23:58:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 23:58:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2021-04-28 23:58:48,200 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6731391585760518 [2021-04-28 23:58:48,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2021-04-28 23:58:48,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2021-04-28 23:58:48,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:58:48,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2021-04-28 23:58:48,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:48,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:48,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:48,234 INFO L185 Difference]: Start difference. First operand has 98 places, 85 transitions, 182 flow. Second operand 3 states and 416 transitions. [2021-04-28 23:58:48,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 282 flow [2021-04-28 23:58:48,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 278 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-04-28 23:58:48,247 INFO L241 Difference]: Finished difference. Result has 98 places, 53 transitions, 156 flow [2021-04-28 23:58:48,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=98, PETRI_TRANSITIONS=53} [2021-04-28 23:58:48,253 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, 0 predicate places. [2021-04-28 23:58:48,254 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:58:48,254 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 53 transitions, 156 flow [2021-04-28 23:58:48,255 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 53 transitions, 156 flow [2021-04-28 23:58:48,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 53 transitions, 156 flow [2021-04-28 23:58:48,327 INFO L129 PetriNetUnfolder]: 148/520 cut-off events. [2021-04-28 23:58:48,327 INFO L130 PetriNetUnfolder]: For 36/44 co-relation queries the response was YES. [2021-04-28 23:58:48,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 520 events. 148/520 cut-off events. For 36/44 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3878 event pairs, 70 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 884. Up to 189 conditions per place. [2021-04-28 23:58:48,347 INFO L146 LiptonReduction]: Number of co-enabled transitions 1484 [2021-04-28 23:58:48,357 INFO L158 LiptonReduction]: Checked pairs total: 28 [2021-04-28 23:58:48,357 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:58:48,357 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 103 [2021-04-28 23:58:48,360 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 156 flow [2021-04-28 23:58:48,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:48,362 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:58:48,362 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:58:48,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 23:58:48,362 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:58:48,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:58:48,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2036811957, now seen corresponding path program 1 times [2021-04-28 23:58:48,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:58:48,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148531851] [2021-04-28 23:58:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:58:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:58:48,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:58:48,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:58:48,529 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:58:48,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:58:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:58:48,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148531851] [2021-04-28 23:58:48,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:58:48,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:58:48,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21175269] [2021-04-28 23:58:48,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:58:48,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:58:48,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:58:48,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:58:48,553 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 206 [2021-04-28 23:58:48,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:48,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:58:48,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 206 [2021-04-28 23:58:48,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:58:48,678 INFO L129 PetriNetUnfolder]: 105/393 cut-off events. [2021-04-28 23:58:48,678 INFO L130 PetriNetUnfolder]: For 68/410 co-relation queries the response was YES. [2021-04-28 23:58:48,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 393 events. 105/393 cut-off events. For 68/410 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2735 event pairs, 21 based on Foata normal form. 12/261 useless extension candidates. Maximal degree in co-relation 861. Up to 142 conditions per place. [2021-04-28 23:58:48,687 INFO L132 encePairwiseOnDemand]: 198/206 looper letters, 14 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2021-04-28 23:58:48,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 262 flow [2021-04-28 23:58:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:58:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:58:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 521 transitions. [2021-04-28 23:58:48,693 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6322815533980582 [2021-04-28 23:58:48,693 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 521 transitions. [2021-04-28 23:58:48,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 521 transitions. [2021-04-28 23:58:48,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:58:48,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 521 transitions. [2021-04-28 23:58:48,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:48,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:48,702 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:48,703 INFO L185 Difference]: Start difference. First operand has 60 places, 53 transitions, 156 flow. Second operand 4 states and 521 transitions. [2021-04-28 23:58:48,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 262 flow [2021-04-28 23:58:48,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 23:58:48,710 INFO L241 Difference]: Finished difference. Result has 64 places, 61 transitions, 232 flow [2021-04-28 23:58:48,710 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2021-04-28 23:58:48,711 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -34 predicate places. [2021-04-28 23:58:48,712 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:58:48,712 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 61 transitions, 232 flow [2021-04-28 23:58:48,712 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 61 transitions, 232 flow [2021-04-28 23:58:48,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 232 flow [2021-04-28 23:58:48,830 INFO L129 PetriNetUnfolder]: 105/387 cut-off events. [2021-04-28 23:58:48,830 INFO L130 PetriNetUnfolder]: For 142/226 co-relation queries the response was YES. [2021-04-28 23:58:48,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 387 events. 105/387 cut-off events. For 142/226 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2680 event pairs, 29 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 793. Up to 142 conditions per place. [2021-04-28 23:58:48,850 INFO L146 LiptonReduction]: Number of co-enabled transitions 1852 [2021-04-28 23:58:48,862 INFO L158 LiptonReduction]: Checked pairs total: 36 [2021-04-28 23:58:48,863 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:58:48,863 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 151 [2021-04-28 23:58:48,875 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 232 flow [2021-04-28 23:58:48,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:48,877 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:58:48,877 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:58:48,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 23:58:48,879 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:58:48,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:58:48,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2040143300, now seen corresponding path program 1 times [2021-04-28 23:58:48,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:58:48,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960682766] [2021-04-28 23:58:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:58:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:58:49,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:58:49,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:58:49,062 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:58:49,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:58:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:58:49,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960682766] [2021-04-28 23:58:49,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:58:49,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:58:49,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859567324] [2021-04-28 23:58:49,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:58:49,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:58:49,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:58:49,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:58:49,093 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 206 [2021-04-28 23:58:49,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:58:49,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 206 [2021-04-28 23:58:49,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:58:49,223 INFO L129 PetriNetUnfolder]: 91/353 cut-off events. [2021-04-28 23:58:49,223 INFO L130 PetriNetUnfolder]: For 205/606 co-relation queries the response was YES. [2021-04-28 23:58:49,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 353 events. 91/353 cut-off events. For 205/606 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2402 event pairs, 25 based on Foata normal form. 17/241 useless extension candidates. Maximal degree in co-relation 890. Up to 122 conditions per place. [2021-04-28 23:58:49,234 INFO L132 encePairwiseOnDemand]: 198/206 looper letters, 17 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2021-04-28 23:58:49,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 344 flow [2021-04-28 23:58:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:58:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:58:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 518 transitions. [2021-04-28 23:58:49,239 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6286407766990292 [2021-04-28 23:58:49,239 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 518 transitions. [2021-04-28 23:58:49,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 518 transitions. [2021-04-28 23:58:49,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:58:49,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 518 transitions. [2021-04-28 23:58:49,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,249 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,251 INFO L185 Difference]: Start difference. First operand has 64 places, 61 transitions, 232 flow. Second operand 4 states and 518 transitions. [2021-04-28 23:58:49,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 344 flow [2021-04-28 23:58:49,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-28 23:58:49,263 INFO L241 Difference]: Finished difference. Result has 70 places, 66 transitions, 332 flow [2021-04-28 23:58:49,264 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2021-04-28 23:58:49,264 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -28 predicate places. [2021-04-28 23:58:49,265 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:58:49,265 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 66 transitions, 332 flow [2021-04-28 23:58:49,266 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 66 transitions, 332 flow [2021-04-28 23:58:49,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 66 transitions, 332 flow [2021-04-28 23:58:49,344 INFO L129 PetriNetUnfolder]: 91/347 cut-off events. [2021-04-28 23:58:49,344 INFO L130 PetriNetUnfolder]: For 418/556 co-relation queries the response was YES. [2021-04-28 23:58:49,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 347 events. 91/347 cut-off events. For 418/556 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2321 event pairs, 22 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 893. Up to 122 conditions per place. [2021-04-28 23:58:49,373 INFO L146 LiptonReduction]: Number of co-enabled transitions 2052 [2021-04-28 23:58:49,398 INFO L158 LiptonReduction]: Checked pairs total: 41 [2021-04-28 23:58:49,398 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:58:49,399 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 134 [2021-04-28 23:58:49,403 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 332 flow [2021-04-28 23:58:49,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,405 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:58:49,405 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:58:49,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 23:58:49,410 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:58:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:58:49,411 INFO L82 PathProgramCache]: Analyzing trace with hash -539729948, now seen corresponding path program 1 times [2021-04-28 23:58:49,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:58:49,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863570126] [2021-04-28 23:58:49,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:58:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:58:49,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:58:49,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:58:49,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:58:49,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:58:49,560 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:58:49,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:58:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:58:49,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863570126] [2021-04-28 23:58:49,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:58:49,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:58:49,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311173545] [2021-04-28 23:58:49,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:58:49,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:58:49,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:58:49,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:58:49,594 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 206 [2021-04-28 23:58:49,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:58:49,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 206 [2021-04-28 23:58:49,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:58:49,783 INFO L129 PetriNetUnfolder]: 83/400 cut-off events. [2021-04-28 23:58:49,784 INFO L130 PetriNetUnfolder]: For 549/980 co-relation queries the response was YES. [2021-04-28 23:58:49,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 400 events. 83/400 cut-off events. For 549/980 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2998 event pairs, 4 based on Foata normal form. 16/260 useless extension candidates. Maximal degree in co-relation 1156. Up to 119 conditions per place. [2021-04-28 23:58:49,796 INFO L132 encePairwiseOnDemand]: 198/206 looper letters, 20 selfloop transitions, 16 changer transitions 26/99 dead transitions. [2021-04-28 23:58:49,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 99 transitions, 748 flow [2021-04-28 23:58:49,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:58:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:58:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 651 transitions. [2021-04-28 23:58:49,801 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6320388349514563 [2021-04-28 23:58:49,801 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 651 transitions. [2021-04-28 23:58:49,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 651 transitions. [2021-04-28 23:58:49,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:58:49,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 651 transitions. [2021-04-28 23:58:49,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,812 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,812 INFO L185 Difference]: Start difference. First operand has 70 places, 66 transitions, 332 flow. Second operand 5 states and 651 transitions. [2021-04-28 23:58:49,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 99 transitions, 748 flow [2021-04-28 23:58:49,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 99 transitions, 742 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:58:49,826 INFO L241 Difference]: Finished difference. Result has 75 places, 67 transitions, 402 flow [2021-04-28 23:58:49,826 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2021-04-28 23:58:49,827 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -23 predicate places. [2021-04-28 23:58:49,827 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:58:49,827 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 402 flow [2021-04-28 23:58:49,828 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 67 transitions, 402 flow [2021-04-28 23:58:49,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 67 transitions, 402 flow [2021-04-28 23:58:49,872 INFO L129 PetriNetUnfolder]: 44/226 cut-off events. [2021-04-28 23:58:49,872 INFO L130 PetriNetUnfolder]: For 410/420 co-relation queries the response was YES. [2021-04-28 23:58:49,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 226 events. 44/226 cut-off events. For 410/420 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1453 event pairs, 9 based on Foata normal form. 1/145 useless extension candidates. Maximal degree in co-relation 647. Up to 70 conditions per place. [2021-04-28 23:58:49,884 INFO L146 LiptonReduction]: Number of co-enabled transitions 1940 [2021-04-28 23:58:49,892 INFO L158 LiptonReduction]: Checked pairs total: 44 [2021-04-28 23:58:49,892 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:58:49,892 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 65 [2021-04-28 23:58:49,898 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 402 flow [2021-04-28 23:58:49,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,900 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:58:49,900 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:58:49,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 23:58:49,900 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:58:49,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:58:49,902 INFO L82 PathProgramCache]: Analyzing trace with hash 448458763, now seen corresponding path program 1 times [2021-04-28 23:58:49,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:58:49,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468377235] [2021-04-28 23:58:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:58:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:58:50,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:58:50,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:58:50,009 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:58:50,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:58:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:58:50,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468377235] [2021-04-28 23:58:50,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:58:50,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:58:50,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709336964] [2021-04-28 23:58:50,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:58:50,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:58:50,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:58:50,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:58:50,042 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 206 [2021-04-28 23:58:50,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:58:50,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 206 [2021-04-28 23:58:50,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:58:50,131 INFO L129 PetriNetUnfolder]: 41/211 cut-off events. [2021-04-28 23:58:50,131 INFO L130 PetriNetUnfolder]: For 353/372 co-relation queries the response was YES. [2021-04-28 23:58:50,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 211 events. 41/211 cut-off events. For 353/372 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1273 event pairs, 1 based on Foata normal form. 3/138 useless extension candidates. Maximal degree in co-relation 700. Up to 65 conditions per place. [2021-04-28 23:58:50,137 INFO L132 encePairwiseOnDemand]: 198/206 looper letters, 17 selfloop transitions, 20 changer transitions 0/74 dead transitions. [2021-04-28 23:58:50,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 554 flow [2021-04-28 23:58:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:58:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:58:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 518 transitions. [2021-04-28 23:58:50,140 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6286407766990292 [2021-04-28 23:58:50,141 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 518 transitions. [2021-04-28 23:58:50,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 518 transitions. [2021-04-28 23:58:50,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:58:50,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 518 transitions. [2021-04-28 23:58:50,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,152 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,152 INFO L185 Difference]: Start difference. First operand has 73 places, 67 transitions, 402 flow. Second operand 4 states and 518 transitions. [2021-04-28 23:58:50,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 554 flow [2021-04-28 23:58:50,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 512 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-04-28 23:58:50,164 INFO L241 Difference]: Finished difference. Result has 76 places, 71 transitions, 505 flow [2021-04-28 23:58:50,165 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2021-04-28 23:58:50,166 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -22 predicate places. [2021-04-28 23:58:50,166 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:58:50,166 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 71 transitions, 505 flow [2021-04-28 23:58:50,166 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 71 transitions, 505 flow [2021-04-28 23:58:50,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 71 transitions, 505 flow [2021-04-28 23:58:50,216 INFO L129 PetriNetUnfolder]: 41/226 cut-off events. [2021-04-28 23:58:50,216 INFO L130 PetriNetUnfolder]: For 497/522 co-relation queries the response was YES. [2021-04-28 23:58:50,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 226 events. 41/226 cut-off events. For 497/522 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1423 event pairs, 5 based on Foata normal form. 2/141 useless extension candidates. Maximal degree in co-relation 664. Up to 65 conditions per place. [2021-04-28 23:58:50,229 INFO L146 LiptonReduction]: Number of co-enabled transitions 2078 [2021-04-28 23:58:50,236 INFO L158 LiptonReduction]: Checked pairs total: 48 [2021-04-28 23:58:50,236 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:58:50,236 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 70 [2021-04-28 23:58:50,241 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 505 flow [2021-04-28 23:58:50,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,242 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:58:50,243 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:58:50,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-28 23:58:50,243 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:58:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:58:50,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1670534087, now seen corresponding path program 1 times [2021-04-28 23:58:50,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:58:50,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270973552] [2021-04-28 23:58:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:58:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:58:50,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:58:50,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:58:50,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:58:50,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:58:50,331 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:58:50,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:58:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:58:50,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270973552] [2021-04-28 23:58:50,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:58:50,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:58:50,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655267877] [2021-04-28 23:58:50,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:58:50,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:58:50,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:58:50,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:58:50,363 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 206 [2021-04-28 23:58:50,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 505 flow. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:58:50,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 206 [2021-04-28 23:58:50,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:58:50,479 INFO L129 PetriNetUnfolder]: 35/225 cut-off events. [2021-04-28 23:58:50,480 INFO L130 PetriNetUnfolder]: For 468/487 co-relation queries the response was YES. [2021-04-28 23:58:50,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 225 events. 35/225 cut-off events. For 468/487 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1431 event pairs, 3 based on Foata normal form. 8/146 useless extension candidates. Maximal degree in co-relation 753. Up to 63 conditions per place. [2021-04-28 23:58:50,486 INFO L132 encePairwiseOnDemand]: 199/206 looper letters, 15 selfloop transitions, 19 changer transitions 5/76 dead transitions. [2021-04-28 23:58:50,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 647 flow [2021-04-28 23:58:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:58:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:58:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 517 transitions. [2021-04-28 23:58:50,495 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6274271844660194 [2021-04-28 23:58:50,496 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 517 transitions. [2021-04-28 23:58:50,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 517 transitions. [2021-04-28 23:58:50,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:58:50,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 517 transitions. [2021-04-28 23:58:50,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,504 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,504 INFO L185 Difference]: Start difference. First operand has 76 places, 71 transitions, 505 flow. Second operand 4 states and 517 transitions. [2021-04-28 23:58:50,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 647 flow [2021-04-28 23:58:50,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:58:50,524 INFO L241 Difference]: Finished difference. Result has 81 places, 69 transitions, 565 flow [2021-04-28 23:58:50,525 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=565, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2021-04-28 23:58:50,525 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -17 predicate places. [2021-04-28 23:58:50,526 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:58:50,526 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 69 transitions, 565 flow [2021-04-28 23:58:50,527 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 69 transitions, 565 flow [2021-04-28 23:58:50,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 69 transitions, 565 flow [2021-04-28 23:58:50,587 INFO L129 PetriNetUnfolder]: 29/204 cut-off events. [2021-04-28 23:58:50,587 INFO L130 PetriNetUnfolder]: For 646/679 co-relation queries the response was YES. [2021-04-28 23:58:50,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 204 events. 29/204 cut-off events. For 646/679 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1302 event pairs, 5 based on Foata normal form. 2/125 useless extension candidates. Maximal degree in co-relation 654. Up to 57 conditions per place. [2021-04-28 23:58:50,597 INFO L146 LiptonReduction]: Number of co-enabled transitions 1990 [2021-04-28 23:58:50,606 INFO L158 LiptonReduction]: Checked pairs total: 46 [2021-04-28 23:58:50,606 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:58:50,606 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 80 [2021-04-28 23:58:50,610 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 565 flow [2021-04-28 23:58:50,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,611 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:58:50,612 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:58:50,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-28 23:58:50,613 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:58:50,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:58:50,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1782000641, now seen corresponding path program 1 times [2021-04-28 23:58:50,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:58:50,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460836556] [2021-04-28 23:58:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:58:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:58:50,752 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-28 23:58:50,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-28 23:58:50,765 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 23:58:50,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:58:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:58:50,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460836556] [2021-04-28 23:58:50,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:58:50,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:58:50,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446206658] [2021-04-28 23:58:50,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:58:50,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:58:50,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:58:50,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:58:50,787 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 206 [2021-04-28 23:58:50,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 565 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:50,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:58:50,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 206 [2021-04-28 23:58:50,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:59:09,267 INFO L129 PetriNetUnfolder]: 68887/98028 cut-off events. [2021-04-28 23:59:09,268 INFO L130 PetriNetUnfolder]: For 27124/36855 co-relation queries the response was YES. [2021-04-28 23:59:09,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200741 conditions, 98028 events. 68887/98028 cut-off events. For 27124/36855 co-relation queries the response was YES. Maximal size of possible extension queue 14085. Compared 864003 event pairs, 37569 based on Foata normal form. 501/27022 useless extension candidates. Maximal degree in co-relation 200712. Up to 60595 conditions per place. [2021-04-28 23:59:10,359 INFO L132 encePairwiseOnDemand]: 185/206 looper letters, 36 selfloop transitions, 34 changer transitions 0/114 dead transitions. [2021-04-28 23:59:10,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 114 transitions, 795 flow [2021-04-28 23:59:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:59:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:59:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 718 transitions. [2021-04-28 23:59:10,365 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6970873786407767 [2021-04-28 23:59:10,365 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 718 transitions. [2021-04-28 23:59:10,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 718 transitions. [2021-04-28 23:59:10,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:59:10,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 718 transitions. [2021-04-28 23:59:10,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:59:10,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:59:10,375 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:59:10,375 INFO L185 Difference]: Start difference. First operand has 81 places, 69 transitions, 565 flow. Second operand 5 states and 718 transitions. [2021-04-28 23:59:10,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 114 transitions, 795 flow [2021-04-28 23:59:10,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 114 transitions, 773 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-04-28 23:59:10,457 INFO L241 Difference]: Finished difference. Result has 87 places, 101 transitions, 799 flow [2021-04-28 23:59:10,458 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=799, PETRI_PLACES=87, PETRI_TRANSITIONS=101} [2021-04-28 23:59:10,459 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -11 predicate places. [2021-04-28 23:59:10,459 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:59:10,459 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 101 transitions, 799 flow [2021-04-28 23:59:10,460 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 101 transitions, 799 flow [2021-04-28 23:59:10,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 101 transitions, 799 flow [2021-04-28 23:59:22,948 INFO L129 PetriNetUnfolder]: 65254/93337 cut-off events. [2021-04-28 23:59:22,949 INFO L130 PetriNetUnfolder]: For 34952/70180 co-relation queries the response was YES. [2021-04-28 23:59:24,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 270104 conditions, 93337 events. 65254/93337 cut-off events. For 34952/70180 co-relation queries the response was YES. Maximal size of possible extension queue 13413. Compared 827389 event pairs, 36339 based on Foata normal form. 20/27277 useless extension candidates. Maximal degree in co-relation 270073. Up to 86532 conditions per place. [2021-04-28 23:59:25,686 INFO L146 LiptonReduction]: Number of co-enabled transitions 2988 [2021-04-28 23:59:25,832 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:59:25,832 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:59:25,833 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15374 [2021-04-28 23:59:25,836 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 101 transitions, 799 flow [2021-04-28 23:59:25,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:59:25,837 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:59:25,838 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:59:25,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-28 23:59:25,838 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:59:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:59:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1816349003, now seen corresponding path program 1 times [2021-04-28 23:59:25,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:59:25,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043870793] [2021-04-28 23:59:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:59:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:59:25,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:59:25,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:59:25,976 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-28 23:59:25,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-28 23:59:25,989 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 23:59:25,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:59:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:59:26,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043870793] [2021-04-28 23:59:26,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:59:26,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:59:26,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035516562] [2021-04-28 23:59:26,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:59:26,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:59:26,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:59:26,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:59:26,015 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 206 [2021-04-28 23:59:26,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 101 transitions, 799 flow. Second operand has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:59:26,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:59:26,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 206 [2021-04-28 23:59:26,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:59:44,018 INFO L129 PetriNetUnfolder]: 79402/117642 cut-off events. [2021-04-28 23:59:44,018 INFO L130 PetriNetUnfolder]: For 59982/1160124 co-relation queries the response was YES. [2021-04-28 23:59:45,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 457228 conditions, 117642 events. 79402/117642 cut-off events. For 59982/1160124 co-relation queries the response was YES. Maximal size of possible extension queue 19620. Compared 1122276 event pairs, 17526 based on Foata normal form. 696/36404 useless extension candidates. Maximal degree in co-relation 457195. Up to 109575 conditions per place. [2021-04-28 23:59:45,749 INFO L132 encePairwiseOnDemand]: 185/206 looper letters, 37 selfloop transitions, 78 changer transitions 0/159 dead transitions. [2021-04-28 23:59:45,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 159 transitions, 1354 flow [2021-04-28 23:59:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-28 23:59:45,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-28 23:59:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1008 transitions. [2021-04-28 23:59:45,756 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6990291262135923 [2021-04-28 23:59:45,756 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1008 transitions. [2021-04-28 23:59:45,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1008 transitions. [2021-04-28 23:59:45,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:59:45,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1008 transitions. [2021-04-28 23:59:45,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:59:45,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:59:45,770 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:59:45,770 INFO L185 Difference]: Start difference. First operand has 87 places, 101 transitions, 799 flow. Second operand 7 states and 1008 transitions. [2021-04-28 23:59:45,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 159 transitions, 1354 flow [2021-04-28 23:59:50,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 159 transitions, 1354 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-28 23:59:50,303 INFO L241 Difference]: Finished difference. Result has 96 places, 145 transitions, 1375 flow [2021-04-28 23:59:50,303 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1375, PETRI_PLACES=96, PETRI_TRANSITIONS=145} [2021-04-28 23:59:50,303 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -2 predicate places. [2021-04-28 23:59:50,303 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:59:50,304 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 145 transitions, 1375 flow [2021-04-28 23:59:50,304 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 145 transitions, 1375 flow [2021-04-28 23:59:50,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 145 transitions, 1375 flow [2021-04-29 00:00:06,905 INFO L129 PetriNetUnfolder]: 75463/112380 cut-off events. [2021-04-29 00:00:06,906 INFO L130 PetriNetUnfolder]: For 114621/286041 co-relation queries the response was YES. [2021-04-29 00:00:07,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 537069 conditions, 112380 events. 75463/112380 cut-off events. For 114621/286041 co-relation queries the response was YES. Maximal size of possible extension queue 18070. Compared 1109247 event pairs, 17205 based on Foata normal form. 33/33526 useless extension candidates. Maximal degree in co-relation 537033. Up to 105687 conditions per place. [2021-04-29 00:00:09,889 INFO L146 LiptonReduction]: Number of co-enabled transitions 4480 [2021-04-29 00:00:10,103 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:00:10,103 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:00:10,103 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19800 [2021-04-29 00:00:10,105 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 145 transitions, 1375 flow [2021-04-29 00:00:10,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:00:10,106 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:00:10,106 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:00:10,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 00:00:10,107 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:00:10,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:00:10,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1235058516, now seen corresponding path program 1 times [2021-04-29 00:00:10,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:00:10,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720737819] [2021-04-29 00:00:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:00:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:00:10,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:00:10,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:00:10,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:00:10,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:00:10,180 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-29 00:00:10,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-29 00:00:10,190 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:00:10,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:00:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:00:10,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720737819] [2021-04-29 00:00:10,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:00:10,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:00:10,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904243859] [2021-04-29 00:00:10,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 00:00:10,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:00:10,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 00:00:10,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 00:00:10,211 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 206 [2021-04-29 00:00:10,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 145 transitions, 1375 flow. Second operand has 6 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 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) [2021-04-29 00:00:10,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:00:10,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 206 [2021-04-29 00:00:10,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:00:32,299 INFO L129 PetriNetUnfolder]: 76918/120450 cut-off events. [2021-04-29 00:00:32,300 INFO L130 PetriNetUnfolder]: For 142576/3743465 co-relation queries the response was YES. [2021-04-29 00:00:33,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 692414 conditions, 120450 events. 76918/120450 cut-off events. For 142576/3743465 co-relation queries the response was YES. Maximal size of possible extension queue 23437. Compared 1262875 event pairs, 3000 based on Foata normal form. 916/37771 useless extension candidates. Maximal degree in co-relation 692376. Up to 112680 conditions per place. [2021-04-29 00:00:33,902 INFO L132 encePairwiseOnDemand]: 185/206 looper letters, 26 selfloop transitions, 122 changer transitions 12/204 dead transitions. [2021-04-29 00:00:33,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 204 transitions, 2231 flow [2021-04-29 00:00:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 00:00:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 00:00:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1298 transitions. [2021-04-29 00:00:33,916 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7001078748651565 [2021-04-29 00:00:33,916 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1298 transitions. [2021-04-29 00:00:33,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1298 transitions. [2021-04-29 00:00:33,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:00:33,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1298 transitions. [2021-04-29 00:00:33,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 144.22222222222223) internal successors, (1298), 9 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:00:33,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:00:33,947 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:00:33,948 INFO L185 Difference]: Start difference. First operand has 96 places, 145 transitions, 1375 flow. Second operand 9 states and 1298 transitions. [2021-04-29 00:00:33,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 204 transitions, 2231 flow [2021-04-29 00:01:03,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 204 transitions, 2108 flow, removed 43 selfloop flow, removed 2 redundant places. [2021-04-29 00:01:03,428 INFO L241 Difference]: Finished difference. Result has 105 places, 189 transitions, 2065 flow [2021-04-29 00:01:03,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2065, PETRI_PLACES=105, PETRI_TRANSITIONS=189} [2021-04-29 00:01:03,428 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, 7 predicate places. [2021-04-29 00:01:03,429 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:01:03,429 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 189 transitions, 2065 flow [2021-04-29 00:01:03,429 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 189 transitions, 2065 flow [2021-04-29 00:01:03,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 189 transitions, 2065 flow [2021-04-29 00:01:17,770 INFO L129 PetriNetUnfolder]: 51217/86595 cut-off events. [2021-04-29 00:01:17,770 INFO L130 PetriNetUnfolder]: For 222112/347649 co-relation queries the response was YES. [2021-04-29 00:01:18,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 530717 conditions, 86595 events. 51217/86595 cut-off events. For 222112/347649 co-relation queries the response was YES. Maximal size of possible extension queue 18477. Compared 1013374 event pairs, 3003 based on Foata normal form. 10/25083 useless extension candidates. Maximal degree in co-relation 530678. Up to 72469 conditions per place. [2021-04-29 00:01:20,667 INFO L146 LiptonReduction]: Number of co-enabled transitions 5332 [2021-04-29 00:01:20,887 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:01:20,888 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:01:20,888 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17459 [2021-04-29 00:01:20,890 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 189 transitions, 2065 flow [2021-04-29 00:01:20,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 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) [2021-04-29 00:01:20,890 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:01:20,891 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:01:20,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-29 00:01:20,891 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:01:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:01:20,892 INFO L82 PathProgramCache]: Analyzing trace with hash -394742492, now seen corresponding path program 1 times [2021-04-29 00:01:20,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:01:20,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008291311] [2021-04-29 00:01:20,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:01:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:01:20,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:01:20,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:01:20,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:01:20,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:01:20,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:01:20,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:01:20,959 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-29 00:01:20,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-29 00:01:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:01:20,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008291311] [2021-04-29 00:01:20,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:01:20,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:01:20,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813832650] [2021-04-29 00:01:20,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:01:20,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:01:20,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:01:20,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:01:20,982 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 206 [2021-04-29 00:01:20,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 189 transitions, 2065 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:01:20,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:01:20,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 206 [2021-04-29 00:01:20,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:01:41,657 INFO L129 PetriNetUnfolder]: 68550/113917 cut-off events. [2021-04-29 00:01:41,658 INFO L130 PetriNetUnfolder]: For 580002/2194779 co-relation queries the response was YES. [2021-04-29 00:01:42,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 698977 conditions, 113917 events. 68550/113917 cut-off events. For 580002/2194779 co-relation queries the response was YES. Maximal size of possible extension queue 25224. Compared 1312230 event pairs, 4458 based on Foata normal form. 364/32894 useless extension candidates. Maximal degree in co-relation 698936. Up to 95530 conditions per place. [2021-04-29 00:01:43,337 INFO L132 encePairwiseOnDemand]: 198/206 looper letters, 18 selfloop transitions, 23 changer transitions 0/198 dead transitions. [2021-04-29 00:01:43,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 198 transitions, 2258 flow [2021-04-29 00:01:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 00:01:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 00:01:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 772 transitions. [2021-04-29 00:01:43,348 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6245954692556634 [2021-04-29 00:01:43,348 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 772 transitions. [2021-04-29 00:01:43,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 772 transitions. [2021-04-29 00:01:43,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:01:43,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 772 transitions. [2021-04-29 00:01:43,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.66666666666666) internal successors, (772), 6 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:01:43,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:01:43,357 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:01:43,357 INFO L185 Difference]: Start difference. First operand has 105 places, 189 transitions, 2065 flow. Second operand 6 states and 772 transitions. [2021-04-29 00:01:43,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 198 transitions, 2258 flow [2021-04-29 00:06:52,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 198 transitions, 1998 flow, removed 86 selfloop flow, removed 4 redundant places. [2021-04-29 00:06:52,699 INFO L241 Difference]: Finished difference. Result has 110 places, 194 transitions, 1974 flow [2021-04-29 00:06:52,700 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1974, PETRI_PLACES=110, PETRI_TRANSITIONS=194} [2021-04-29 00:06:52,700 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, 12 predicate places. [2021-04-29 00:06:52,700 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:52,700 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 194 transitions, 1974 flow [2021-04-29 00:06:52,701 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 194 transitions, 1974 flow [2021-04-29 00:06:52,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 194 transitions, 1974 flow [2021-04-29 00:07:08,364 INFO L129 PetriNetUnfolder]: 68550/113917 cut-off events. [2021-04-29 00:07:08,364 INFO L130 PetriNetUnfolder]: For 292132/775523 co-relation queries the response was YES. [2021-04-29 00:07:09,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 575099 conditions, 113917 events. 68550/113917 cut-off events. For 292132/775523 co-relation queries the response was YES. Maximal size of possible extension queue 25720. Compared 1352584 event pairs, 4458 based on Foata normal form. 8/32842 useless extension candidates. Maximal degree in co-relation 575056. Up to 93100 conditions per place. [2021-04-29 00:07:10,532 INFO L146 LiptonReduction]: Number of co-enabled transitions 6100 [2021-04-29 00:07:10,632 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:07:10,632 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:10,633 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17933 [2021-04-29 00:07:10,633 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 194 transitions, 1974 flow [2021-04-29 00:07:10,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:10,634 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:10,634 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:10,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-29 00:07:10,634 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:10,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:10,635 INFO L82 PathProgramCache]: Analyzing trace with hash 102583473, now seen corresponding path program 1 times [2021-04-29 00:07:10,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:10,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74651391] [2021-04-29 00:07:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:10,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:10,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:10,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:10,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:10,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:10,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:10,694 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-29 00:07:10,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-29 00:07:10,705 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:07:10,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:10,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74651391] [2021-04-29 00:07:10,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:10,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 00:07:10,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036421548] [2021-04-29 00:07:10,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 00:07:10,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:10,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 00:07:10,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-29 00:07:10,721 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 206 [2021-04-29 00:07:10,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 194 transitions, 1974 flow. Second operand has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:10,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:10,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 206 [2021-04-29 00:07:10,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand